Arch Linux

mallocman

Member

Registered: 2012-08-16

Posts: 24

Kernel 5.16 Choppy GUI

Hi,

I have noticed a choppy GUI rendering after a recent system update to linux 5.16.1.arch1-1.
Whenever the computer has to load or newly display something - for example images while scrolling the webpage, the whole display together with the mouse cursor freezes for ~0.2s to 1s. Once the freeze lasted for ~10s.

The problem occurs independently of DE (tested with KDE/Plasma and DWM) and windowing systems (x11, Wayland).
I suspect that the issue is related to IO. Rendering glxgears does not show any problems, but as soon as I start something which requires disk IO or perhaps load GPU resources, the whole display together with the mouse starts chopping (~0.5s freezes in ~2s intervals). The effect definitely does not look like ordinary lag (low CPU/DISK/GPU resources). I have checked Intel GPU and CPU resources and everything is close to idle. YouTube playback in Chromium works without issues until I open the play bar (in fullscreen) or start scrolling recommended videos.

Using the LTS kernel (5.15.15-1-lts) solves the problem.
My laptop is DELL XPS 15 9550, using an integrated Intel GPU.
The issue is not with the CPU frequency or using the xf86-video-intel driver.

Does anyone have any idea what is happening?
Thank you in advance.

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

IO errors will show up in "dmesg", IO load in "iotop"

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mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

I am checking the kernel log difference between 5.15 and 5.16 (journalctl -k -p warning --boot=-1 -o cat --no-pager).

Linux 5.16 kernel is loading NVIDIA module? Could this be the issue and why there is a difference?
Also, the new kernel has some issues with Bluetooth?

5.15 log:

MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
TAA CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html for more details.
 #5 #6 #7
ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20210730/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20210730/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20210730/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20210730/psparse-529)
i915: unknown parameter 'enable_rc6' ignored
i915: unknown parameter 'lvds_downclock' ignored
i8042: Warning: Keylock active
usb: port power management may be unreliable
ACPI Warning: \_SB.IETM._ART: Return Package type mismatch at index 0 - found Integer, expected Reference (20210730/nspredef-260)
_ART package 0 is invalid, ignored
ACPI Warning: \_SB.IETM._TRT: Return Package has no elements (empty) (20210730/nsprepkg-94)
wmi_bus wmi_bus-PNP0C14:02: WQBC data block query control method not found
platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
iwlwifi 0000:02:00.0: WRT: Overriding region id 0
iwlwifi 0000:02:00.0: WRT: Overriding region id 1
iwlwifi 0000:02:00.0: WRT: Overriding region id 2
iwlwifi 0000:02:00.0: WRT: Overriding region id 3
iwlwifi 0000:02:00.0: WRT: Overriding region id 4
iwlwifi 0000:02:00.0: WRT: Overriding region id 6
iwlwifi 0000:02:00.0: WRT: Overriding region id 8
iwlwifi 0000:02:00.0: WRT: Overriding region id 9
iwlwifi 0000:02:00.0: WRT: Overriding region id 10
iwlwifi 0000:02:00.0: WRT: Overriding region id 11
iwlwifi 0000:02:00.0: WRT: Overriding region id 15
iwlwifi 0000:02:00.0: WRT: Overriding region id 16
iwlwifi 0000:02:00.0: WRT: Overriding region id 18
iwlwifi 0000:02:00.0: WRT: Overriding region id 19
iwlwifi 0000:02:00.0: WRT: Overriding region id 20
iwlwifi 0000:02:00.0: WRT: Overriding region id 21
iwlwifi 0000:02:00.0: WRT: Overriding region id 28
thermal thermal_zone10: failed to read out thermal zone (-61)
kauditd_printk_skb: 40 callbacks suppressed
kauditd_printk_skb: 14 callbacks suppressed

5.16 error log:

x86/cpu: SGX disabled by BIOS.
MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
TAA CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html for more details.
 #5 #6 #7
ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210930/psargs-330)
ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20210930/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210930/psargs-330)
ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20210930/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210930/psargs-330)
ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20210930/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECAV], AE_NOT_FOUND (20210930/psargs-330)
ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20210930/psparse-529)
i915: unknown parameter 'enable_rc6' ignored
i915: unknown parameter 'lvds_downclock' ignored
i8042: Warning: Keylock active
usb: port power management may be unreliable
Userspace governor deprecated: use thermal netlink notification instead
ACPI Warning: \_SB.IETM._ART: Return Package type mismatch at index 0 - found Integer, expected Reference (20210930/nspredef-260)
_ART package 0 is invalid, ignored
ACPI Warning: \_SB.IETM._TRT: Return Package has no elements (empty) (20210930/nsprepkg-94)
wmi_bus wmi_bus-PNP0C14:02: WQBC data block query control method not found
platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
iwlwifi 0000:02:00.0: WRT: Overriding region id 0
iwlwifi 0000:02:00.0: WRT: Overriding region id 1
iwlwifi 0000:02:00.0: WRT: Overriding region id 2
iwlwifi 0000:02:00.0: WRT: Overriding region id 3
iwlwifi 0000:02:00.0: WRT: Overriding region id 4
iwlwifi 0000:02:00.0: WRT: Overriding region id 6
iwlwifi 0000:02:00.0: WRT: Overriding region id 8
iwlwifi 0000:02:00.0: WRT: Overriding region id 9
iwlwifi 0000:02:00.0: WRT: Overriding region id 10
iwlwifi 0000:02:00.0: WRT: Overriding region id 11
iwlwifi 0000:02:00.0: WRT: Overriding region id 15
iwlwifi 0000:02:00.0: WRT: Overriding region id 16
iwlwifi 0000:02:00.0: WRT: Overriding region id 18
iwlwifi 0000:02:00.0: WRT: Overriding region id 19
iwlwifi 0000:02:00.0: WRT: Overriding region id 20
iwlwifi 0000:02:00.0: WRT: Overriding region id 21
iwlwifi 0000:02:00.0: WRT: Overriding region id 28
Bluetooth: hci0: Failed to read codec capabilities (-56)
Bluetooth: hci0: Failed to read codec capabilities (-56)
Bluetooth: hci0: Failed to read codec capabilities (-56)
Bluetooth: hci0: Failed to read codec capabilities (-56)
Bluetooth: hci0: Failed to read codec capabilities (-56)
Bluetooth: hci0: Failed to read codec capabilities (-56)
thermal thermal_zone11: failed to read out thermal zone (-61)
kauditd_printk_skb: 50 callbacks suppressed
nvidia: loading out-of-tree module taints kernel.
nvidia: module license 'NVIDIA' taints kernel.
Disabling lock debugging due to kernel taint

NVRM: loading NVIDIA UNIX x86_64 Kernel Module  495.46  Wed Oct 27 16:31:33 UTC 2021
ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20210930/nsarguments-61)
kauditd_printk_skb: 14 callbacks suppressed
watchdog: watchdog0: watchdog did not stop!

Last edited by mallocman (2022-01-19 15:26:25)

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

Did you install the lts kernel but not nvidia-lts for this comparism?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

I have removed all Nvidia related packages and the message is gone.
@seth: you were right

So, the Nvidia kernel module is not causing the problem and dmesg doesn't reveal anything I could relate to this problem.

Just recently I experienced a ~20s freeze, unable to move the mouse, but I was still able to scroll the webpage using the keyboard. Immediately I thought, this could be the touchpad issue. But then, how can glxgears lag when scrolling webpage in Chromium?

Currently, I am writing this message using kernel 5.16 and the experience is worst than using raspberryPI PC - text on the display frequently does not follow keyboard typing.
I have never experienced such performance or choppiness difference when switching kernel versions.

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

using an integrated Intel GPU

nvidia

https://wiki.archlinux.org/title/PRIME# … erse_PRIME
Also blue note in https://wiki.archlinux.org/title/PRIME#Reverse_PRIME

Please post an xorg log (would also be interesting whether the input lag is recorded there or the stalled pointer is purely visual)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

One more thing I noticed is when typing and holding a key the display does rarely gets refreshed. Repeated characters usually show up only when the key is released. Strangely, the same lag is not observed while holding arrow keys and moving the cursor.

When testing on Wayland, the glxgears performance drops to 27 FPS just by moving the mouse cursor across the screen.

Here is the whole output:

[    13.276] (--) Log file renamed from "/var/log/Xorg.pid-538.log" to "/var/log/Xorg.0.log"
[    13.279] 
X.Org X Server 1.21.1.3
X Protocol Version 11, Revision 0
[    13.279] Current Operating System: Linux dell 5.16.1-arch1-1 #1 SMP PREEMPT Sun, 16 Jan 2022 11:39:23 +0000 x86_64
[    13.279] Kernel command line: initrd=\initramfs-linux.img cryptdevice=UUID=04a2a402-d7cd-43bb-a595-d205f63c735f:cryptroot root=/dev/mapper/cryptroot rw
[    13.279]  
[    13.279] Current version of pixman: 0.40.0
[    13.279] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[    13.279] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    13.279] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jan 19 21:29:06 2022
[    13.282] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    13.283] (==) No Layout section.  Using the first Screen section.
[    13.283] (==) No screen section available. Using defaults.
[    13.283] (**) |-->Screen "Default Screen Section" (0)
[    13.283] (**) |   |-->Monitor "<default monitor>"
[    13.283] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[    13.283] (==) Automatically adding devices
[    13.283] (==) Automatically enabling devices
[    13.283] (==) Automatically adding GPU devices
[    13.283] (==) Automatically binding GPU devices
[    13.283] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    13.284] (WW) The directory "/usr/share/fonts/misc" does not exist.
[    13.284] 	Entry deleted from font path.
[    13.286] (WW) The directory "/usr/share/fonts/Type1" does not exist.
[    13.286] 	Entry deleted from font path.
[    13.287] (==) FontPath set to:
	/usr/share/fonts/TTF,
	/usr/share/fonts/OTF,
	/usr/share/fonts/100dpi,
	/usr/share/fonts/75dpi
[    13.287] (==) ModulePath set to "/usr/lib/xorg/modules"
[    13.287] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[    13.287] (II) Module ABI versions:
[    13.287] 	X.Org ANSI C Emulation: 0.4
[    13.287] 	X.Org Video Driver: 25.2
[    13.287] 	X.Org XInput driver : 24.4
[    13.287] 	X.Org Server Extension : 10.0
[    13.288] (++) using VT number 1

[    13.288] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    13.288] (II) xfree86: Adding drm device (/dev/dri/card0)
[    13.288] (II) Platform probe for /sys/devices/pci0000:00/0000:00:02.0/drm/card0
[    13.295] (--) PCI:*(0@0:2:0) 8086:191b:1028:06e4 rev 6, Mem @ 0xdb000000/16777216, 0x70000000/268435456, I/O @ 0x0000f000/64, BIOS @ 0x????????/131072
[    13.295] (--) PCI: (1@0:0:0) 10de:139b:1028:06e4 rev 162, Mem @ 0xdc000000/16777216, 0xb0000000/268435456, 0xc0000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288
[    13.295] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[    13.295] (II) LoadModule: "glx"
[    13.296] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    13.302] (II) Module glx: vendor="X.Org Foundation"
[    13.302] 	compiled for 1.21.1.3, module version = 1.0.0
[    13.302] 	ABI class: X.Org Server Extension, version 10.0
[    13.302] (==) Matched intel as autoconfigured driver 0
[    13.302] (==) Matched modesetting as autoconfigured driver 1
[    13.302] (==) Matched fbdev as autoconfigured driver 2
[    13.302] (==) Matched vesa as autoconfigured driver 3
[    13.302] (==) Assigned the driver to the xf86ConfigLayout
[    13.302] (II) LoadModule: "intel"
[    13.303] (WW) Warning, couldn't open module intel
[    13.303] (EE) Failed to load module "intel" (module does not exist, 0)
[    13.303] (II) LoadModule: "modesetting"
[    13.303] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    13.307] (II) Module modesetting: vendor="X.Org Foundation"
[    13.307] 	compiled for 1.21.1.3, module version = 1.21.1
[    13.307] 	Module class: X.Org Video Driver
[    13.307] 	ABI class: X.Org Video Driver, version 25.2
[    13.307] (II) LoadModule: "fbdev"
[    13.307] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[    13.308] (II) Module fbdev: vendor="X.Org Foundation"
[    13.308] 	compiled for 1.21.1.1, module version = 0.5.0
[    13.308] 	Module class: X.Org Video Driver
[    13.308] 	ABI class: X.Org Video Driver, version 25.2
[    13.308] (II) LoadModule: "vesa"
[    13.308] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[    13.308] (II) Module vesa: vendor="X.Org Foundation"
[    13.308] 	compiled for 1.21.1.1, module version = 2.5.0
[    13.308] 	Module class: X.Org Video Driver
[    13.308] 	ABI class: X.Org Video Driver, version 25.2
[    13.308] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    13.308] (II) FBDEV: driver for framebuffer: fbdev
[    13.308] (II) VESA: driver for VESA chipsets: vesa
[    13.325] (II) modeset(0): using drv /dev/dri/card0
[    13.325] (WW) Falling back to old probe method for fbdev
[    13.325] (II) Loading sub module "fbdevhw"
[    13.325] (II) LoadModule: "fbdevhw"
[    13.325] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    13.326] (II) Module fbdevhw: vendor="X.Org Foundation"
[    13.326] 	compiled for 1.21.1.3, module version = 0.0.2
[    13.326] 	ABI class: X.Org Video Driver, version 25.2
[    13.326] (II) modeset(0): Creating default Display subsection in Screen section
	"Default Screen Section" for depth/fbbpp 24/32
[    13.326] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
[    13.326] (==) modeset(0): RGB weight 888
[    13.326] (==) modeset(0): Default visual is TrueColor
[    13.326] (II) Loading sub module "glamoregl"
[    13.326] (II) LoadModule: "glamoregl"
[    13.326] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[    13.332] (II) Module glamoregl: vendor="X.Org Foundation"
[    13.332] 	compiled for 1.21.1.3, module version = 1.0.1
[    13.332] 	ABI class: X.Org ANSI C Emulation, version 0.4
[    13.562] (II) modeset(0): glamor X acceleration enabled on Mesa Intel(R) HD Graphics 530 (SKL GT2)
[    13.562] (II) modeset(0): glamor initialized
[    13.562] (==) modeset(0): VariableRefresh: disabled
[    13.562] (==) modeset(0): AsyncFlipSecondaries: disabled
[    13.564] (II) modeset(0): Output eDP-1 has no monitor section
[    13.564] (II) modeset(0): Output DP-1 has no monitor section
[    13.571] (II) modeset(0): Output HDMI-1 has no monitor section
[    13.571] (II) modeset(0): Output DP-2 has no monitor section
[    13.578] (II) modeset(0): Output HDMI-2 has no monitor section
[    13.580] (II) modeset(0): EDID for output eDP-1
[    13.580] (II) modeset(0): Manufacturer: SHP  Model: 143e  Serial#: 0
[    13.580] (II) modeset(0): Year: 2015  Week: 40
[    13.580] (II) modeset(0): EDID Version: 1.4
[    13.580] (II) modeset(0): Digital Display Input
[    13.580] (II) modeset(0): 8 bits per channel
[    13.580] (II) modeset(0): Digital interface is DisplayPort
[    13.580] (II) modeset(0): Max Image Size [cm]: horiz.: 35  vert.: 19
[    13.580] (II) modeset(0): Gamma: 2.20
[    13.580] (II) modeset(0): No DPMS capabilities specified
[    13.580] (II) modeset(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
[    13.580] (II) modeset(0): Default color space is primary color space
[    13.580] (II) modeset(0): First detailed timing is preferred mode
[    13.580] (II) modeset(0): Preferred mode is native pixel format and refresh rate
[    13.580] (II) modeset(0): redX: 0.660 redY: 0.327   greenX: 0.203 greenY: 0.727
[    13.580] (II) modeset(0): blueX: 0.147 blueY: 0.051   whiteX: 0.305 whiteY: 0.330
[    13.580] (II) modeset(0): Manufacturer's mask: 0
[    13.580] (II) modeset(0): Supported detailed timing:
[    13.580] (II) modeset(0): clock: 533.2 MHz   Image Size:  346 x 194 mm
[    13.580] (II) modeset(0): h_active: 3840  h_sync: 3888  h_sync_end 3920 h_blank_end 4000 h_border: 0
[    13.580] (II) modeset(0): v_active: 2160  v_sync: 2163  v_sync_end 2168 v_blanking: 2222 v_border: 0
[    13.580] (II) modeset(0):  7PHPTLQ156D1
[    13.580] (II) modeset(0): Unknown vendor-specific block 0
[    13.580] (II) modeset(0): EDID (in hex):
[    13.580] (II) modeset(0): 	00ffffffffffff004d103e1400000000
[    13.580] (II) modeset(0): 	28190104a52313780e30c2a95334ba25
[    13.580] (II) modeset(0): 	0d4e5400000001010101010101010101
[    13.580] (II) modeset(0): 	0101010101014dd000a0f0703e803020
[    13.580] (II) modeset(0): 	35005ac2100000180000000000000000
[    13.580] (II) modeset(0): 	00000000000000000000000000fe0037
[    13.580] (II) modeset(0): 	50485054824c51313536443100000000
[    13.580] (II) modeset(0): 	0002410328001200000b010a202000d5
[    13.580] (II) modeset(0): Printing probed modes for output eDP-1
[    13.580] (II) modeset(0): Modeline "3840x2160"x60.0  533.25  3840 3888 3920 4000  2160 2163 2168 2222 -hsync -vsync (133.3 kHz eP)
[    13.580] (II) modeset(0): Modeline "3840x2160"x60.0  712.75  3840 4160 4576 5312  2160 2163 2168 2237 -hsync +vsync (134.2 kHz d)
[    13.580] (II) modeset(0): Modeline "3840x2160"x60.0  533.00  3840 3888 3920 4000  2160 2163 2168 2222 +hsync -vsync (133.2 kHz d)
[    13.580] (II) modeset(0): Modeline "3200x1800"x60.0  492.00  3200 3456 3800 4400  1800 1803 1808 1865 -hsync +vsync (111.8 kHz d)
[    13.580] (II) modeset(0): Modeline "3200x1800"x59.9  373.00  3200 3248 3280 3360  1800 1803 1808 1852 +hsync -vsync (111.0 kHz d)
[    13.580] (II) modeset(0): Modeline "2880x1620"x60.0  396.25  2880 3096 3408 3936  1620 1623 1628 1679 -hsync +vsync (100.7 kHz d)
[    13.580] (II) modeset(0): Modeline "2880x1620"x60.0  303.75  2880 2928 2960 3040  1620 1623 1628 1666 +hsync -vsync (99.9 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1600"x60.0  348.50  2560 2760 3032 3504  1600 1603 1609 1658 -hsync +vsync (99.5 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1600"x60.0  268.50  2560 2608 2640 2720  1600 1603 1609 1646 +hsync -vsync (98.7 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1440"x120.0  638.25  2560 2780 3064 3568  1440 1441 1444 1491 doublescan -hsync +vsync (178.9 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1440"x120.0  469.12  2560 2584 2600 2640  1440 1441 1444 1481 doublescan +hsync -vsync (177.7 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1440"x60.0  312.25  2560 2752 3024 3488  1440 1443 1448 1493 -hsync +vsync (89.5 kHz d)
[    13.580] (II) modeset(0): Modeline "2560x1440"x60.0  241.50  2560 2608 2640 2720  1440 1443 1448 1481 +hsync -vsync (88.8 kHz d)
[    13.580] (II) modeset(0): Modeline "2048x1536"x60.0  266.95  2048 2200 2424 2800  1536 1537 1540 1589 -hsync +vsync (95.3 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1440"x60.0  234.00  1920 2048 2256 2600  1440 1441 1444 1500 -hsync +vsync (90.0 kHz d)
[    13.580] (II) modeset(0): Modeline "1856x1392"x60.0  218.30  1856 1952 2176 2528  1392 1393 1396 1439 -hsync +vsync (86.4 kHz d)
[    13.580] (II) modeset(0): Modeline "1792x1344"x60.0  204.80  1792 1920 2120 2448  1344 1345 1348 1394 -hsync +vsync (83.7 kHz d)
[    13.580] (II) modeset(0): Modeline "2048x1152"x120.0  406.50  2048 2220 2444 2840  1152 1153 1156 1193 doublescan -hsync +vsync (143.1 kHz d)
[    13.580] (II) modeset(0): Modeline "2048x1152"x120.0  302.50  2048 2072 2088 2128  1152 1153 1156 1185 doublescan +hsync -vsync (142.2 kHz d)
[    13.580] (II) modeset(0): Modeline "2048x1152"x59.9  197.00  2048 2184 2400 2752  1152 1155 1160 1195 -hsync +vsync (71.6 kHz d)
[    13.580] (II) modeset(0): Modeline "2048x1152"x59.9  156.75  2048 2096 2128 2208  1152 1155 1160 1185 +hsync -vsync (71.0 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1200"x59.9  193.25  1920 2056 2256 2592  1200 1203 1209 1245 -hsync +vsync (74.6 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1200"x60.0  154.00  1920 1968 2000 2080  1200 1203 1209 1235 +hsync -vsync (74.0 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1080"x120.0  356.38  1920 2080 2288 2656  1080 1081 1084 1118 doublescan -hsync +vsync (134.2 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1080"x119.9  266.50  1920 1944 1960 2000  1080 1081 1084 1111 doublescan +hsync -vsync (133.2 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1080"x60.0  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync (67.2 kHz d)
[    13.580] (II) modeset(0): Modeline "1920x1080"x59.9  138.50  1920 1968 2000 2080  1080 1083 1088 1111 +hsync -vsync (66.6 kHz d)
[    13.580] (II) modeset(0): Modeline "1600x1200"x60.0  162.00  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (75.0 kHz d)
[    13.580] (II) modeset(0): Modeline "1680x1050"x60.0  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync (65.3 kHz d)
[    13.580] (II) modeset(0): Modeline "1680x1050"x59.9  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz d)
[    13.580] (II) modeset(0): Modeline "1400x1050"x60.0  122.00  1400 1488 1640 1880  1050 1052 1064 1082 +hsync +vsync (64.9 kHz d)
[    13.580] (II) modeset(0): Modeline "1600x900"x120.0  246.00  1600 1728 1900 2200  900 901 904 932 doublescan -hsync +vsync (111.8 kHz d)
[    13.580] (II) modeset(0): Modeline "1600x900"x119.9  186.50  1600 1624 1640 1680  900 901 904 926 doublescan +hsync -vsync (111.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1600x900"x59.9  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync (56.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1600x900"x59.8   97.50  1600 1648 1680 1760  900 903 908 926 +hsync -vsync (55.4 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1400x900"x60.0  103.50  1400 1480 1624 1848  900 903 913 934 -hsync +vsync (56.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1400x900"x59.9   86.50  1400 1448 1480 1560  900 903 913 926 +hsync -vsync (55.4 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x960"x60.0  108.00  1280 1376 1488 1800  960 961 964 1000 +hsync +vsync (60.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1440x810"x120.0  198.12  1440 1548 1704 1968  810 811 814 839 doublescan -hsync +vsync (100.7 kHz d)
[    13.581] (II) modeset(0): Modeline "1440x810"x119.9  151.88  1440 1464 1480 1520  810 811 814 833 doublescan +hsync -vsync (99.9 kHz d)
[    13.581] (II) modeset(0): Modeline "1368x768"x59.9   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync (47.8 kHz d)
[    13.581] (II) modeset(0): Modeline "1368x768"x59.9   72.25  1368 1416 1448 1528  768 771 781 790 +hsync -vsync (47.3 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x800"x120.0  174.25  1280 1380 1516 1752  800 801 804 829 doublescan -hsync +vsync (99.5 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x800"x119.9  134.25  1280 1304 1320 1360  800 801 804 823 doublescan +hsync -vsync (98.7 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x800"x59.8   83.50  1280 1352 1480 1680  800 803 809 831 -hsync +vsync (49.7 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x800"x59.9   71.00  1280 1328 1360 1440  800 803 809 823 +hsync -vsync (49.3 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x720"x120.0  156.12  1280 1376 1512 1744  720 721 724 746 doublescan -hsync +vsync (89.5 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x720"x120.0  120.75  1280 1304 1320 1360  720 721 724 740 doublescan +hsync -vsync (88.8 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x720"x59.9   74.50  1280 1344 1472 1664  720 723 728 748 -hsync +vsync (44.8 kHz d)
[    13.581] (II) modeset(0): Modeline "1280x720"x59.7   63.75  1280 1328 1360 1440  720 723 728 741 +hsync -vsync (44.3 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x768"x120.1  133.47  1024 1100 1212 1400  768 768 770 794 doublescan -hsync +vsync (95.3 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz d)
[    13.581] (II) modeset(0): Modeline "960x720"x120.0  117.00  960 1024 1128 1300  720 720 722 750 doublescan -hsync +vsync (90.0 kHz d)
[    13.581] (II) modeset(0): Modeline "928x696"x120.1  109.15  928 976 1088 1264  696 696 698 719 doublescan -hsync +vsync (86.4 kHz d)
[    13.581] (II) modeset(0): Modeline "896x672"x120.0  102.40  896 960 1060 1224  672 672 674 697 doublescan -hsync +vsync (83.7 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x576"x119.9   98.50  1024 1092 1200 1376  576 577 580 597 doublescan -hsync +vsync (71.6 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x576"x119.9   78.38  1024 1048 1064 1104  576 577 580 592 doublescan +hsync -vsync (71.0 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x576"x59.9   46.50  1024 1064 1160 1296  576 579 584 599 -hsync +vsync (35.9 kHz d)
[    13.581] (II) modeset(0): Modeline "1024x576"x59.8   42.00  1024 1072 1104 1184  576 579 584 593 +hsync -vsync (35.5 kHz d)
[    13.581] (II) modeset(0): Modeline "960x600"x119.9   96.62  960 1028 1128 1296  600 601 604 622 doublescan -hsync +vsync (74.6 kHz d)
[    13.581] (II) modeset(0): Modeline "960x600"x120.0   77.00  960 984 1000 1040  600 601 604 617 doublescan +hsync -vsync (74.0 kHz d)
[    13.581] (II) modeset(0): Modeline "960x540"x119.9   86.50  960 1024 1124 1288  540 541 544 560 doublescan -hsync +vsync (67.2 kHz d)
[    13.581] (II) modeset(0): Modeline "960x540"x120.0   69.25  960 984 1000 1040  540 541 544 555 doublescan +hsync -vsync (66.6 kHz d)
[    13.581] (II) modeset(0): Modeline "960x540"x59.6   40.75  960 992 1088 1216  540 543 548 562 -hsync +vsync (33.5 kHz d)
[    13.581] (II) modeset(0): Modeline "960x540"x59.8   37.25  960 1008 1040 1120  540 543 548 556 +hsync -vsync (33.3 kHz d)
[    13.581] (II) modeset(0): Modeline "800x600"x120.0   81.00  800 832 928 1080  600 600 602 625 doublescan +hsync +vsync (75.0 kHz d)
[    13.581] (II) modeset(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz d)
[    13.581] (II) modeset(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz d)
[    13.581] (II) modeset(0): Modeline "840x525"x120.0   73.12  840 892 980 1120  525 526 529 544 doublescan -hsync +vsync (65.3 kHz d)
[    13.581] (II) modeset(0): Modeline "840x525"x119.8   59.50  840 864 880 920  525 526 529 540 doublescan +hsync -vsync (64.7 kHz d)
[    13.581] (II) modeset(0): Modeline "864x486"x59.9   32.50  864 888 968 1072  486 489 494 506 -hsync +vsync (30.3 kHz d)
[    13.581] (II) modeset(0): Modeline "864x486"x59.6   30.50  864 912 944 1024  486 489 494 500 +hsync -vsync (29.8 kHz d)
[    13.581] (II) modeset(0): Modeline "700x525"x120.0   61.00  700 744 820 940  525 526 532 541 doublescan +hsync +vsync (64.9 kHz d)
[    13.581] (II) modeset(0): Modeline "800x450"x119.9   59.12  800 848 928 1056  450 451 454 467 doublescan -hsync +vsync (56.0 kHz d)
[    13.581] (II) modeset(0): Modeline "800x450"x119.6   48.75  800 824 840 880  450 451 454 463 doublescan +hsync -vsync (55.4 kHz d)
[    13.581] (II) modeset(0): Modeline "640x512"x120.0   54.00  640 664 720 844  512 512 514 533 doublescan +hsync +vsync (64.0 kHz d)
[    13.581] (II) modeset(0): Modeline "700x450"x119.9   51.75  700 740 812 924  450 451 456 467 doublescan -hsync +vsync (56.0 kHz d)
[    13.581] (II) modeset(0): Modeline "700x450"x119.8   43.25  700 724 740 780  450 451 456 463 doublescan +hsync -vsync (55.4 kHz d)
[    13.581] (II) modeset(0): Modeline "640x480"x120.0   54.00  640 688 744 900  480 480 482 500 doublescan +hsync +vsync (60.0 kHz d)
[    13.581] (II) modeset(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz d)
[    13.581] (II) modeset(0): Modeline "720x405"x59.5   22.50  720 744 808 896  405 408 413 422 -hsync +vsync (25.1 kHz d)
[    13.581] (II) modeset(0): Modeline "720x405"x59.0   21.75  720 768 800 880  405 408 413 419 +hsync -vsync (24.7 kHz d)
[    13.581] (II) modeset(0): Modeline "684x384"x119.8   42.62  684 720 788 892  384 385 390 399 doublescan -hsync +vsync (47.8 kHz d)
[    13.581] (II) modeset(0): Modeline "684x384"x119.7   36.12  684 708 724 764  384 385 390 395 doublescan +hsync -vsync (47.3 kHz d)
[    13.581] (II) modeset(0): Modeline "640x400"x119.8   41.75  640 676 740 840  400 401 404 415 doublescan -hsync +vsync (49.7 kHz d)
[    13.581] (II) modeset(0): Modeline "640x400"x120.0   35.50  640 664 680 720  400 401 404 411 doublescan +hsync -vsync (49.3 kHz d)
[    13.581] (II) modeset(0): Modeline "640x360"x119.7   37.25  640 672 736 832  360 361 364 374 doublescan -hsync +vsync (44.8 kHz d)
[    13.581] (II) modeset(0): Modeline "640x360"x119.7   31.88  640 664 680 720  360 361 364 370 doublescan +hsync -vsync (44.3 kHz d)
[    13.581] (II) modeset(0): Modeline "640x360"x59.8   18.00  640 664 720 800  360 363 368 376 -hsync +vsync (22.5 kHz d)
[    13.581] (II) modeset(0): Modeline "640x360"x59.3   17.75  640 688 720 800  360 363 368 374 +hsync -vsync (22.2 kHz d)
[    13.581] (II) modeset(0): Modeline "512x384"x120.0   32.50  512 524 592 672  384 385 388 403 doublescan -hsync -vsync (48.4 kHz d)
[    13.581] (II) modeset(0): Modeline "512x288"x120.0   23.25  512 532 580 648  288 289 292 299 doublescan -hsync +vsync (35.9 kHz d)
[    13.581] (II) modeset(0): Modeline "512x288"x119.8   21.00  512 536 552 592  288 289 292 296 doublescan +hsync -vsync (35.5 kHz d)
[    13.581] (II) modeset(0): Modeline "480x270"x119.3   20.38  480 496 544 608  270 271 274 281 doublescan -hsync +vsync (33.5 kHz d)
[    13.581] (II) modeset(0): Modeline "480x270"x119.6   18.62  480 504 520 560  270 271 274 278 doublescan +hsync -vsync (33.3 kHz d)
[    13.581] (II) modeset(0): Modeline "400x300"x120.6   20.00  400 420 484 528  300 300 302 314 doublescan +hsync +vsync (37.9 kHz d)
[    13.581] (II) modeset(0): Modeline "400x300"x112.7   18.00  400 412 448 512  300 300 301 312 doublescan +hsync +vsync (35.2 kHz d)
[    13.581] (II) modeset(0): Modeline "432x243"x119.8   16.25  432 444 484 536  243 244 247 253 doublescan -hsync +vsync (30.3 kHz d)
[    13.581] (II) modeset(0): Modeline "432x243"x119.1   15.25  432 456 472 512  243 244 247 250 doublescan +hsync -vsync (29.8 kHz d)
[    13.581] (II) modeset(0): Modeline "320x240"x120.1   12.59  320 328 376 400  240 245 246 262 doublescan -hsync -vsync (31.5 kHz d)
[    13.581] (II) modeset(0): Modeline "360x202"x119.0   11.25  360 372 404 448  202 204 206 211 doublescan -hsync +vsync (25.1 kHz d)
[    13.581] (II) modeset(0): Modeline "360x202"x118.3   10.88  360 384 400 440  202 204 206 209 doublescan +hsync -vsync (24.7 kHz d)
[    13.581] (II) modeset(0): Modeline "320x180"x119.7    9.00  320 332 360 400  180 181 184 188 doublescan -hsync +vsync (22.5 kHz d)
[    13.581] (II) modeset(0): Modeline "320x180"x118.6    8.88  320 344 360 400  180 181 184 187 doublescan +hsync -vsync (22.2 kHz d)
[    13.581] (II) modeset(0): EDID for output DP-1
[    13.587] (II) modeset(0): EDID for output HDMI-1
[    13.587] (II) modeset(0): EDID for output DP-2
[    13.593] (II) modeset(0): EDID for output HDMI-2
[    13.593] (II) modeset(0): Output eDP-1 connected
[    13.593] (II) modeset(0): Output DP-1 disconnected
[    13.593] (II) modeset(0): Output HDMI-1 disconnected
[    13.593] (II) modeset(0): Output DP-2 disconnected
[    13.593] (II) modeset(0): Output HDMI-2 disconnected
[    13.593] (II) modeset(0): Using exact sizes for initial modes
[    13.593] (II) modeset(0): Output eDP-1 using initial mode 3840x2160 +0+0
[    13.593] (==) modeset(0): Using gamma correction (1.0, 1.0, 1.0)
[    13.593] (==) modeset(0): DPI set to (96, 96)
[    13.593] (II) Loading sub module "fb"
[    13.593] (II) LoadModule: "fb"
[    13.593] (II) Module "fb" already built-in
[    13.593] (II) UnloadModule: "fbdev"
[    13.593] (II) Unloading fbdev
[    13.593] (II) UnloadSubModule: "fbdevhw"
[    13.593] (II) Unloading fbdevhw
[    13.593] (II) UnloadModule: "vesa"
[    13.593] (II) Unloading vesa
[    13.622] (==) modeset(0): Backing store enabled
[    13.622] (==) modeset(0): Silken mouse enabled
[    13.692] (II) modeset(0): Initializing kms color map for depth 24, 8 bpc.
[    13.692] (==) modeset(0): DPMS enabled
[    13.692] (II) modeset(0): [DRI2] Setup complete
[    13.692] (II) modeset(0): [DRI2]   DRI driver: iris
[    13.692] (II) modeset(0): [DRI2]   VDPAU driver: va_gl
[    13.692] (II) Initializing extension Generic Event Extension
[    13.692] (II) Initializing extension SHAPE
[    13.692] (II) Initializing extension MIT-SHM
[    13.693] (II) Initializing extension XInputExtension
[    13.693] (II) Initializing extension XTEST
[    13.693] (II) Initializing extension BIG-REQUESTS
[    13.693] (II) Initializing extension SYNC
[    13.693] (II) Initializing extension XKEYBOARD
[    13.693] (II) Initializing extension XC-MISC
[    13.693] (II) Initializing extension SECURITY
[    13.693] (II) Initializing extension XFIXES
[    13.693] (II) Initializing extension RENDER
[    13.693] (II) Initializing extension RANDR
[    13.694] (II) Initializing extension COMPOSITE
[    13.694] (II) Initializing extension DAMAGE
[    13.694] (II) Initializing extension MIT-SCREEN-SAVER
[    13.694] (II) Initializing extension DOUBLE-BUFFER
[    13.694] (II) Initializing extension RECORD
[    13.694] (II) Initializing extension DPMS
[    13.694] (II) Initializing extension Present
[    13.694] (II) Initializing extension DRI3
[    13.694] (II) Initializing extension X-Resource
[    13.694] (II) Initializing extension XVideo
[    13.694] (II) Initializing extension XVideo-MotionCompensation
[    13.694] (II) Initializing extension GLX
[    13.700] (II) AIGLX: Loaded and initialized iris
[    13.700] (II) GLX: Initialized DRI2 GL provider for screen 0
[    13.700] (II) Initializing extension XFree86-VidModeExtension
[    13.700] (II) Initializing extension XFree86-DGA
[    13.700] (II) Initializing extension XFree86-DRI
[    13.700] (II) Initializing extension DRI2
[    13.701] (II) modeset(0): Damage tracking initialized
[    13.701] (II) modeset(0): Setting screen physical size to 1016 x 571
[    13.790] (II) config/udev: Adding input device Power Button (/dev/input/event3)
[    13.790] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    13.790] (**) Power Button: Applying InputClass "libinput keyboard catchall"
[    13.790] (II) LoadModule: "libinput"
[    13.790] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so
[    13.793] (II) Module libinput: vendor="X.Org Foundation"
[    13.793] 	compiled for 1.21.1, module version = 1.2.0
[    13.793] 	Module class: X.Org XInput Driver
[    13.793] 	ABI class: X.Org XInput driver, version 24.4
[    13.793] (II) Using input driver 'libinput' for 'Power Button'
[    13.793] (**) Power Button: always reports core events
[    13.793] (**) Option "Device" "/dev/input/event3"
[    13.793] (**) Option "_source" "server/udev"
[    13.809] (II) event3  - Power Button: is tagged by udev as: Keyboard
[    13.809] (II) event3  - Power Button: device is a keyboard
[    13.809] (II) event3  - Power Button: device removed
[    13.839] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3/event3"
[    13.839] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[    13.840] (II) event3  - Power Button: is tagged by udev as: Keyboard
[    13.840] (II) event3  - Power Button: device is a keyboard
[    13.840] (II) config/udev: Adding input device Video Bus (/dev/input/event4)
[    13.840] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[    13.840] (**) Video Bus: Applying InputClass "libinput keyboard catchall"
[    13.840] (II) Using input driver 'libinput' for 'Video Bus'
[    13.840] (**) Video Bus: always reports core events
[    13.840] (**) Option "Device" "/dev/input/event4"
[    13.841] (**) Option "_source" "server/udev"
[    13.841] (II) event4  - Video Bus: is tagged by udev as: Keyboard
[    13.841] (II) event4  - Video Bus: device is a keyboard
[    13.841] (II) event4  - Video Bus: device removed
[    13.893] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input4/event4"
[    13.893] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[    13.906] (II) event4  - Video Bus: is tagged by udev as: Keyboard
[    13.906] (II) event4  - Video Bus: device is a keyboard
[    13.908] (II) config/udev: Adding input device Video Bus (/dev/input/event5)
[    13.908] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[    13.908] (**) Video Bus: Applying InputClass "libinput keyboard catchall"
[    13.908] (II) Using input driver 'libinput' for 'Video Bus'
[    13.908] (**) Video Bus: always reports core events
[    13.908] (**) Option "Device" "/dev/input/event5"
[    13.908] (**) Option "_source" "server/udev"
[    13.910] (II) event5  - Video Bus: is tagged by udev as: Keyboard
[    13.910] (II) event5  - Video Bus: device is a keyboard
[    13.910] (II) event5  - Video Bus: device removed
[    14.012] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:0a/LNXVIDEO:01/input/input5/event5"
[    14.012] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[    14.013] (II) event5  - Video Bus: is tagged by udev as: Keyboard
[    14.013] (II) event5  - Video Bus: device is a keyboard
[    14.014] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[    14.014] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    14.014] (**) Power Button: Applying InputClass "libinput keyboard catchall"
[    14.014] (II) Using input driver 'libinput' for 'Power Button'
[    14.014] (**) Power Button: always reports core events
[    14.014] (**) Option "Device" "/dev/input/event1"
[    14.014] (**) Option "_source" "server/udev"
[    14.014] (II) event1  - Power Button: is tagged by udev as: Keyboard
[    14.014] (II) event1  - Power Button: device is a keyboard
[    14.014] (II) event1  - Power Button: device removed
[    14.079] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1/event1"
[    14.079] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 9)
[    14.080] (II) event1  - Power Button: is tagged by udev as: Keyboard
[    14.080] (II) event1  - Power Button: device is a keyboard
[    14.080] (II) config/udev: Adding input device Lid Switch (/dev/input/event0)
[    14.080] (II) No input driver specified, ignoring this device.
[    14.080] (II) This device may have been added with another device file.
[    14.080] (II) config/udev: Adding input device Sleep Button (/dev/input/event2)
[    14.080] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[    14.080] (**) Sleep Button: Applying InputClass "libinput keyboard catchall"
[    14.080] (II) Using input driver 'libinput' for 'Sleep Button'
[    14.080] (**) Sleep Button: always reports core events
[    14.080] (**) Option "Device" "/dev/input/event2"
[    14.080] (**) Option "_source" "server/udev"
[    14.081] (II) event2  - Sleep Button: is tagged by udev as: Keyboard
[    14.081] (II) event2  - Sleep Button: device is a keyboard
[    14.081] (II) event2  - Sleep Button: device removed
[    14.132] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2/event2"
[    14.132] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 10)
[    14.133] (II) event2  - Sleep Button: is tagged by udev as: Keyboard
[    14.133] (II) event2  - Sleep Button: device is a keyboard
[    14.134] (II) config/udev: Adding input device Integrated_Webcam_HD: Integrate (/dev/input/event14)
[    14.134] (**) Integrated_Webcam_HD: Integrate: Applying InputClass "evdev keyboard catchall"
[    14.134] (**) Integrated_Webcam_HD: Integrate: Applying InputClass "libinput keyboard catchall"
[    14.134] (II) Using input driver 'libinput' for 'Integrated_Webcam_HD: Integrate'
[    14.134] (**) Integrated_Webcam_HD: Integrate: always reports core events
[    14.134] (**) Option "Device" "/dev/input/event14"
[    14.134] (**) Option "_source" "server/udev"
[    14.135] (II) event14 - Integrated_Webcam_HD: Integrate: is tagged by udev as: Keyboard
[    14.135] (II) event14 - Integrated_Webcam_HD: Integrate: device is a keyboard
[    14.135] (II) event14 - Integrated_Webcam_HD: Integrate: device removed
[    14.239] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input21/event14"
[    14.239] (II) XINPUT: Adding extended input device "Integrated_Webcam_HD: Integrate" (type: KEYBOARD, id 11)
[    14.240] (II) event14 - Integrated_Webcam_HD: Integrate: is tagged by udev as: Keyboard
[    14.240] (II) event14 - Integrated_Webcam_HD: Integrate: device is a keyboard
[    14.241] (II) config/udev: Adding input device ELAN Touchscreen (/dev/input/event7)
[    14.241] (**) ELAN Touchscreen: Applying InputClass "evdev touchscreen catchall"
[    14.241] (**) ELAN Touchscreen: Applying InputClass "libinput touchscreen catchall"
[    14.241] (II) Using input driver 'libinput' for 'ELAN Touchscreen'
[    14.241] (**) ELAN Touchscreen: always reports core events
[    14.241] (**) Option "Device" "/dev/input/event7"
[    14.241] (**) Option "_source" "server/udev"
[    14.242] (II) event7  - ELAN Touchscreen: is tagged by udev as: Touchscreen
[    14.242] (II) event7  - ELAN Touchscreen: device is a touch device
[    14.242] (II) event7  - ELAN Touchscreen: device removed
[    14.332] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9/1-9:1.0/0003:04F3:21D5.0001/input/input12/event7"
[    14.332] (II) XINPUT: Adding extended input device "ELAN Touchscreen" (type: TOUCHSCREEN, id 12)
[    14.332] (**) Option "AccelerationScheme" "none"
[    14.332] (**) ELAN Touchscreen: (accel) selected scheme none/0
[    14.332] (**) ELAN Touchscreen: (accel) acceleration factor: 2.000
[    14.332] (**) ELAN Touchscreen: (accel) acceleration threshold: 4
[    14.333] (II) event7  - ELAN Touchscreen: is tagged by udev as: Touchscreen
[    14.333] (II) event7  - ELAN Touchscreen: device is a touch device
[    14.334] (II) config/udev: Adding input device ELAN Touchscreen (/dev/input/mouse0)
[    14.334] (II) No input driver specified, ignoring this device.
[    14.334] (II) This device may have been added with another device file.
[    14.335] (II) config/udev: Adding input device ELAN Touchscreen UNKNOWN (/dev/input/event8)
[    14.335] (II) No input driver specified, ignoring this device.
[    14.335] (II) This device may have been added with another device file.
[    14.335] (II) config/udev: Adding input device ELAN Touchscreen UNKNOWN (/dev/input/event9)
[    14.335] (II) No input driver specified, ignoring this device.
[    14.335] (II) This device may have been added with another device file.
[    14.336] (II) config/udev: Adding input device DLL06E4:01 06CB:7A13 Mouse (/dev/input/event11)
[    14.336] (**) DLL06E4:01 06CB:7A13 Mouse: Applying InputClass "evdev pointer catchall"
[    14.336] (**) DLL06E4:01 06CB:7A13 Mouse: Applying InputClass "libinput pointer catchall"
[    14.336] (II) Using input driver 'libinput' for 'DLL06E4:01 06CB:7A13 Mouse'
[    14.336] (**) DLL06E4:01 06CB:7A13 Mouse: always reports core events
[    14.336] (**) Option "Device" "/dev/input/event11"
[    14.336] (**) Option "_source" "server/udev"
[    14.337] (II) event11 - DLL06E4:01 06CB:7A13 Mouse: is tagged by udev as: Mouse Pointingstick
[    14.337] (II) event11 - DLL06E4:01 06CB:7A13 Mouse: device is a pointer
[    14.337] (II) event11 - DLL06E4:01 06CB:7A13 Mouse: device removed
[    14.439] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DLL06E4:01/0018:06CB:7A13.0002/input/input17/event11"
[    14.439] (II) XINPUT: Adding extended input device "DLL06E4:01 06CB:7A13 Mouse" (type: MOUSE, id 13)
[    14.439] (**) Option "AccelerationScheme" "none"
[    14.439] (**) DLL06E4:01 06CB:7A13 Mouse: (accel) selected scheme none/0
[    14.439] (**) DLL06E4:01 06CB:7A13 Mouse: (accel) acceleration factor: 2.000
[    14.439] (**) DLL06E4:01 06CB:7A13 Mouse: (accel) acceleration threshold: 4
[    14.440] (II) event11 - DLL06E4:01 06CB:7A13 Mouse: is tagged by udev as: Mouse Pointingstick
[    14.440] (II) event11 - DLL06E4:01 06CB:7A13 Mouse: device is a pointer
[    14.441] (II) config/udev: Adding input device DLL06E4:01 06CB:7A13 Mouse (/dev/input/mouse1)
[    14.441] (II) No input driver specified, ignoring this device.
[    14.441] (II) This device may have been added with another device file.
[    14.442] (II) config/udev: Adding input device DLL06E4:01 06CB:7A13 Touchpad (/dev/input/event12)
[    14.442] (**) DLL06E4:01 06CB:7A13 Touchpad: Applying InputClass "evdev touchpad catchall"
[    14.442] (**) DLL06E4:01 06CB:7A13 Touchpad: Applying InputClass "libinput touchpad catchall"
[    14.442] (II) Using input driver 'libinput' for 'DLL06E4:01 06CB:7A13 Touchpad'
[    14.442] (**) DLL06E4:01 06CB:7A13 Touchpad: always reports core events
[    14.442] (**) Option "Device" "/dev/input/event12"
[    14.442] (**) Option "_source" "server/udev"
[    14.443] (II) event12 - DLL06E4:01 06CB:7A13 Touchpad: is tagged by udev as: Touchpad
[    14.444] (II) event12 - DLL06E4:01 06CB:7A13 Touchpad: device is a touchpad
[    14.444] (II) event12 - DLL06E4:01 06CB:7A13 Touchpad: device removed
[    14.533] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DLL06E4:01/0018:06CB:7A13.0002/input/input18/event12"
[    14.533] (II) XINPUT: Adding extended input device "DLL06E4:01 06CB:7A13 Touchpad" (type: TOUCHPAD, id 14)
[    14.535] (**) Option "AccelerationScheme" "none"
[    14.535] (**) DLL06E4:01 06CB:7A13 Touchpad: (accel) selected scheme none/0
[    14.535] (**) DLL06E4:01 06CB:7A13 Touchpad: (accel) acceleration factor: 2.000
[    14.535] (**) DLL06E4:01 06CB:7A13 Touchpad: (accel) acceleration threshold: 4
[    14.538] (II) event12 - DLL06E4:01 06CB:7A13 Touchpad: is tagged by udev as: Touchpad
[    14.541] (II) event12 - DLL06E4:01 06CB:7A13 Touchpad: device is a touchpad
[    14.543] (II) config/udev: Adding input device DLL06E4:01 06CB:7A13 Touchpad (/dev/input/mouse2)
[    14.543] (II) No input driver specified, ignoring this device.
[    14.543] (II) This device may have been added with another device file.
[    14.544] (II) config/udev: Adding input device HDA Intel PCH Headphone Mic (/dev/input/event16)
[    14.544] (II) No input driver specified, ignoring this device.
[    14.544] (II) This device may have been added with another device file.
[    14.544] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event17)
[    14.544] (II) No input driver specified, ignoring this device.
[    14.544] (II) This device may have been added with another device file.
[    14.545] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=7 (/dev/input/event18)
[    14.545] (II) No input driver specified, ignoring this device.
[    14.545] (II) This device may have been added with another device file.
[    14.546] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=8 (/dev/input/event19)
[    14.546] (II) No input driver specified, ignoring this device.
[    14.546] (II) This device may have been added with another device file.
[    14.547] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=9 (/dev/input/event20)
[    14.547] (II) No input driver specified, ignoring this device.
[    14.547] (II) This device may have been added with another device file.
[    14.548] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=10 (/dev/input/event21)
[    14.548] (II) No input driver specified, ignoring this device.
[    14.548] (II) This device may have been added with another device file.
[    14.549] (II) config/udev: Adding input device Intel HID events (/dev/input/event15)
[    14.549] (**) Intel HID events: Applying InputClass "evdev keyboard catchall"
[    14.549] (**) Intel HID events: Applying InputClass "libinput keyboard catchall"
[    14.549] (II) Using input driver 'libinput' for 'Intel HID events'
[    14.549] (**) Intel HID events: always reports core events
[    14.549] (**) Option "Device" "/dev/input/event15"
[    14.549] (**) Option "_source" "server/udev"
[    14.550] (II) event15 - Intel HID events: is tagged by udev as: Keyboard
[    14.550] (II) event15 - Intel HID events: device is a keyboard
[    14.550] (II) event15 - Intel HID events: device removed
[    14.599] (**) Option "config_info" "udev:/sys/devices/platform/INT33D5:00/input/input22/event15"
[    14.599] (II) XINPUT: Adding extended input device "Intel HID events" (type: KEYBOARD, id 15)
[    14.600] (II) event15 - Intel HID events: is tagged by udev as: Keyboard
[    14.600] (II) event15 - Intel HID events: device is a keyboard
[    14.602] (II) config/udev: Adding input device Dell WMI hotkeys (/dev/input/event13)
[    14.602] (**) Dell WMI hotkeys: Applying InputClass "evdev keyboard catchall"
[    14.602] (**) Dell WMI hotkeys: Applying InputClass "libinput keyboard catchall"
[    14.602] (II) Using input driver 'libinput' for 'Dell WMI hotkeys'
[    14.602] (**) Dell WMI hotkeys: always reports core events
[    14.602] (**) Option "Device" "/dev/input/event13"
[    14.602] (**) Option "_source" "server/udev"
[    14.604] (II) event13 - Dell WMI hotkeys: is tagged by udev as: Keyboard
[    14.604] (II) event13 - Dell WMI hotkeys: device is a keyboard
[    14.605] (II) event13 - Dell WMI hotkeys: device removed
[    14.692] (**) Option "config_info" "udev:/sys/devices/platform/PNP0C14:02/wmi_bus/wmi_bus-PNP0C14:02/9DBB5994-A997-11DA-B012-B622A1EF5492/input/input20/event13"
[    14.692] (II) XINPUT: Adding extended input device "Dell WMI hotkeys" (type: KEYBOARD, id 16)
[    14.693] (II) event13 - Dell WMI hotkeys: is tagged by udev as: Keyboard
[    14.693] (II) event13 - Dell WMI hotkeys: device is a keyboard
[    14.694] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event6)
[    14.694] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[    14.694] (**) AT Translated Set 2 keyboard: Applying InputClass "libinput keyboard catchall"
[    14.694] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard'
[    14.694] (**) AT Translated Set 2 keyboard: always reports core events
[    14.694] (**) Option "Device" "/dev/input/event6"
[    14.694] (**) Option "_source" "server/udev"
[    14.695] (II) event6  - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard
[    14.695] (II) event6  - AT Translated Set 2 keyboard: device is a keyboard
[    14.695] (II) event6  - AT Translated Set 2 keyboard: device removed
[    14.735] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input6/event6"
[    14.735] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 17)
[    14.736] (II) event6  - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard
[    14.736] (II) event6  - AT Translated Set 2 keyboard: device is a keyboard
[    14.737] (II) config/udev: Adding input device PC Speaker (/dev/input/event10)
[    14.737] (II) No input driver specified, ignoring this device.
[    14.737] (II) This device may have been added with another device file.
[    32.368] (II) modeset(0): EDID vendor "SHP", prod id 5182
[    32.368] (II) modeset(0): Printing DDC gathered Modelines:
[    32.368] (II) modeset(0): Modeline "3840x2160"x0.0  533.25  3840 3888 3920 4000  2160 2163 2168 2222 -hsync -vsync (133.3 kHz eP)
[    33.347] (II) modeset(0): EDID vendor "SHP", prod id 5182
[    33.347] (II) modeset(0): Printing DDC gathered Modelines:
[    33.347] (II) modeset(0): Modeline "3840x2160"x0.0  533.25  3840 3888 3920 4000  2160 2163 2168 2222 -hsync -vsync (133.3 kHz eP)

A few minutes later I noticed:

[mm@dell /var/log]% cat Xorg.0.log | grep EE
[    13.279] Current Operating System: Linux dell 5.16.1-arch1-1 #1 SMP PREEMPT Sun, 16 Jan 2022 11:39:23 +0000 x86_64
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    13.303] (EE) Failed to load module "intel" (module does not exist, 0)
[    13.694] (II) Initializing extension MIT-SCREEN-SAVER
[    14.332] (II) XINPUT: Adding extended input device "ELAN Touchscreen" (type: TOUCHSCREEN, id 12)
[  1185.380] (EE) event12 - DLL06E4:01 06CB:7A13 Touchpad: client bug: event processing lagging behind by 192ms, your system is too slow
[  1220.176] (EE) event12 - DLL06E4:01 06CB:7A13 Touchpad: client bug: event processing lagging behind by 132ms, your system is too slow
[mm@dell /var/log]%

Last edited by mallocman (2022-01-19 20:53:02)

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

Probably not relevant but you want to get rid of these

[    13.308] (II) FBDEV: driver for framebuffer: fbdev
[    13.308] (II) VESA: driver for VESA chipsets: vesa

No idea how we square the input lag into this, but if it's not CPU, IO or the display server, let's look at the the intel module.
https://wiki.archlinux.org/title/Intel_ … flickering
https://wiki.archlinux.org/title/Intel_ … on_(VSYNC)
https://wiki.archlinux.org/title/Intel_ … nable_fbc) (*dis*able this)

Is the nvidia chip a dedicated VGA (can you run a session on it and attach an output there to completely circumvent the intel chip?)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

I have applied all three recommendations.
Is seems that the performance has slightly improved, which renders aforementioned choppy experience less obvious.

The overall experience is still much better on the LTS kernel.

I am also sure that it must be something related to the Intel GPU.
The dedicated NVIDIA GPU shares frame buffer with the Intel on this laptop, so it is impossible to use it as a 'stand alone' GPU. The only way to use it is through bbswitch and optirun by running only certain applications on the dedicated GPU. Once I found a project which configures X11 to run a whole xserver on the Nvidia GPU but sadly I was not able to make it work.

I also tried to use the Laptop in tty for some time. There, I did not experience any lag issues using kernel 5.16.

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

The settings address issues that should have an on/off impact - not "slightly less unbearable".
What if you "export MESA_LOADER_DRIVER_OVERRIDE=i965" (somewhere up in hierarchy, ideally /etc/profile.d/some_script.sh, to hit the entire session)?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

I have managed to fix the issue by downgrading DELL XPS 9550 BIOS from 1.14 to the good old version 1.12. Do not know how and why the newest kernel does not work nicely with the newest BIOS version. Downgrading either of them somehow fixes the problem.

Should this be reported to kernel developers?
In my opinion, the issue resides in the DELL XPS BIOS. I already had numerous problems with almost all their versions. It is hard to understand how can one of the best laptops have that crappy BIOS. Each version fix something and bring whole bunch of new weird issues.

@seth: Thank you for helping and please accept apology for sharing this burden.

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

How sure were you about the cpu frequency situation? Did you check

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq

for suspiciously low frequencies?
https://wiki.archlinux.org/title/CPU_frequency_scaling

You could also look at limiting the c-state, https://wiki.archlinux.org/title/Intel_ … ete_freeze (ignore the context)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

I already had several issues with CPU frequency being caped to ~800MHz. I am not certain but I would say that faulty BIOS was to blame for that also (forgot which version).
This time the frequency was fluctuating normally from 1-2+GHz as reported by powertop and ksysguard.

It could be that Intel GPU got stuck in C state, but I rather use older BIOS then to increase power consumption. It is to satisfying to see ~7W usage and +8h uptime on a 6 years old laptop.

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

Thanks for reporting and investigating, I own the same laptop (XPS 9550) and I have the same lagging system since upgrading to kernel 5.16.

I can add the following information:
- there is no lagging when on battery power.
- as soon as I plug in AC, it begins to lag.
- disconnecting AC sometimes recovers the system (only a reboot with AC disconnected recovers the system fully).

CPU frequencies according to @seth's command when on battery are usually around:

800208
800023
800371
800009
799930
800003
800094
800342

As soon as I plug it in, it goes up to:

3248338
3154761
3495045
3150588
3197017
3289576
3281305
3287208

And stays there.

Last edited by JoeyCorleone (2022-01-22 11:31:33)

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

So it lags when on AC all cores run full steam?
What if (on the AC) you force the governor to "powersave", https://wiki.archlinux.org/title/CPU_fr … _governors ?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

So it lags when on AC all cores run full steam?

Yes.

What if (on the AC) you force the governor to "powersave", https://wiki.archlinux.org/title/CPU_fr … _governors ?

Setting the governor to "powersave" via cpupower seems to have no effect when on AC - all cores stay at 3.2 GHz.

When on battery power (after fresh reboot), I get 800 MHz on "powersave" and 3.2 GHz on "performance" (both without lags).

seth

Member

Registered: 2012-09-03

Posts: 51,043

Re: Kernel 5.16 Choppy GUI

Can you lower the maximum frequency, https://wiki.archlinux.org/title/CPU_fr … requencies
And does that have impact on the situation?

Is this btw. a model w/ hybrid graphics (and do you maybe get the nvidia chip activated on the AC)?

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mallocman

Member

Registered: 2012-08-16

Posts: 24

Re: Kernel 5.16 Choppy GUI

Is this btw. a model w/ hybrid graphics (and do you maybe get the nvidia chip activated on the AC)?

Yes, It is a hybrid model. I had the same issue with NVidia enabled or disabled ( bbswitch modprobe.d config ) on 1.14 bios.
Haven't noticed that running on battery also fixes the problem - have similar issue on my phone .
If I think again, I also noticed high CPU frequency, as Joey mentioned.

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

Can you lower the maximum frequency, https://wiki.archlinux.org/title/CPU_fr … requencies
And does that have impact on the situation?

Lowering the maximum frequency works (confirmed via cat /sys/devices/system/cpu/cpu[0-9]*/cpufreq/scaling_cur_freq) but the system remains choppy.

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

I have bisected the kernel, found the offending commit ("PCI/portdrv: Do not setup up IRQs if there are no users") and filed a bug against the PCI driver component.

Not sure if I CC'ed the correct addresses (this is my first report on the kernel), but let's see what happens.

Tallix

Member

From: Arizona, USA

Registered: 2013-06-02

Posts: 20

Re: Kernel 5.16 Choppy GUI

Hi all,

I am experiencing the exact same problem on the exact same model of laptop (Dell XPS 15 9550). It looks like the conversation has moved from here to Bugzilla, but I'm not sure if/how I can contribute to the conversation/testing efforts in a meaningful way over there. Could anyone provide some pointers?

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

I have managed to fix the issue by downgrading DELL XPS 9550 BIOS from 1.14 to the good old version 1.12. Do not know how and why the newest kernel does not work nicely with the newest BIOS version. Downgrading either of them somehow fixes the problem.

You are currently running the v5.16 linux kernel on the 1.12 BIOS version without issues, right?

Could you please boot with

pci=earlydump

enabled and post a dmesg log?

dmesg > log

JoeyCorleone

Member

Registered: 2022-01-22

Posts: 88

Re: Kernel 5.16 Choppy GUI

To put a close on this: the offending commit has been reverted in the kernel and thus the issues are gone since v5.16.10-arch1.