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#1 2020-06-06 19:44:24

DexterLB
Member
Registered: 2011-06-20
Posts: 51

[SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

Hello,
I wish to configure a multi-seat setup (2 monitors, each with its own associated keyboard and mouse, separate X server).

I have created the relevant udev seat assignments:

loginctl attach seat-1 /sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/0000:09:00.0/0000:0a:00.0/drm/card0/card0-HDMI-A-1 # output for monitor 1
loginctl attach seat-2 /sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/0000:09:00.0/0000:0a:00.0/drm/card0/card0-DP-2  # output for monitor 2
loginctl attach seat-1 /sys/devices/pci0000:00/0000:00:08.1/0000:0c:00.3/usb5/5-3 # usb hub for monitor 2 input devices
loginctl attach seat-2 /sys/devices/pci0000:00/0000:00:08.1/0000:0c:00.3/usb5/5-4 # usb hub for monitor 2 input devices

And I have verified that input devices are correctly assigned to seats. (seat0 contains all else).

Next, I have configured X in the following way:

$ cat /etc/X11/xorg.conf.d/50-seats.conf 
Section "DRI"
	Mode 0666
EndSection

Section "ServerLayout"
	Identifier "l1"
	Screen     "Screen_HDMI_A_0" 0 0
	MatchSeat "seat-1"
EndSection

Section "ServerLayout"
	Identifier "l2"
	Screen     "Screen_DP_1" 0 0
	MatchSeat "seat-2"
EndSection

Section "Screen"
	Identifier "Screen_HDMI_A_0"
	Device     "Device_HDMI_A_0"
EndSection

Section "Screen"
	Identifier "Screen_DP_1"
	Device     "Device_DP_1"
EndSection


Section "Device"
	Identifier  "Device_HDMI_A_0"
	Driver      "amdgpu"
	Option      "ZaphodHeads" "HDMI-A-0"
	Screen       0
	MatchSeat   "seat-1"
EndSection

Section "Device"
	Identifier  "Device_HDMI_A_0"
	Driver      "amdgpu"
	Option      "ZaphodHeads" "HDMI-A-0"
	Screen       1
	MatchSeat   "seat-2"
EndSection

Section "Device"
	Identifier  "Device_DP_1"
	Driver      "amdgpu"
	Option      "ZaphodHeads" "DisplayPort-1"
	Screen       1
	MatchSeat   "seat-1"
EndSection

Section "Device"
	Identifier  "Device_DP_1"
	Driver      "amdgpu"
	Option      "ZaphodHeads" "DisplayPort-1"
	Screen       0
	MatchSeat    "seat-2"
EndSection

Now, I can start a X server on the first monitor:

startx -- -seat seat-1

which correctly uses the keyboard and mouse associated with it.

And I can starta X server on the second monitor:

startx -- -seat seat-2

which correctly uses the keyboard and mouse associated with it.

Sweet!

However, I am unable to start both X servers at the same time, getting the following error when trying to start the second (time-wise) X server:

[  3823.554] (EE) systemd-logind: TakeControl failed: Device or resource busy
[  3823.554] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
[  3823.560] (EE) AMDGPU(0): [drm] failed to set drm interface version.
[  3823.561] (EE) AMDGPU(1): [drm] failed to set drm interface version.

According to the AMDGPU docs, one should be able to start multiple instances of the userspace driver just fine. What is going on?

Maybe the problem is that I always add both outputs as screens and leave one unused (otherwise X exposes both outputs via RandR regardless of ZaphodHeads for some reason). Is there another way to not include the unused screen?

Extra remark: My X server is running as root (ZaphodHeads fails at all when in regular user mode).

Last edited by DexterLB (2020-06-13 14:04:55)

The best solution to a problem is usually the easiest one.

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#2 2020-06-08 12:17:12

DexterLB
Member
Registered: 2011-06-20
Posts: 51

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

I don't seem to be able to stop X from capturing all screens.

In fact, with the following xorg.conf:

Section "ServerFlags"
	Option "AutoAddGPU" "false"
	Option "AutoAddDevices" "false"
EndSection

And nothing else (no Device sections!) X still detects my GPU and displays. I would expect it to fail with "No screens found" instead. Why does this happen?

Here is the X log:

[ 76704.301] (WW) Failed to open protocol names file lib/xorg/protocol.txt
[ 76704.302] 
X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
[ 76704.302] Build Operating System: Linux Arch Linux
[ 76704.302] Current Operating System: Linux gallifrey 5.7.0-arch1-1 #1 SMP PREEMPT Mon, 01 Jun 2020 22:54:03 +0000 x86_64
[ 76704.302] Kernel command line: BOOT_IMAGE=/root/boot/vmlinuz-linux root=/dev/mapper/gfr_crypt rw rootflags=subvol=root rd.luks.name=62f43f28-4668-44da-ac39-788721ef82c7=gfr_crypt rd.luks.key=/var/keys/self.key rd.luks.options=discard loglevel=4
[ 76704.302] Build Date: 05 May 2020  05:08:17AM
[ 76704.302]  
[ 76704.302] Current version of pixman: 0.40.0
[ 76704.302] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[ 76704.302] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 76704.302] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Jun  8 13:49:10 2020
[ 76704.303] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 76704.303] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 76704.303] (==) No Layout section.  Using the first Screen section.
[ 76704.303] (==) No screen section available. Using defaults.
[ 76704.303] (**) |-->Screen "Default Screen Section" (0)
[ 76704.303] (**) |   |-->Monitor "<default monitor>"
[ 76704.303] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[ 76704.303] (**) Option "AutoAddDevices" "false"
[ 76704.303] (**) Option "AutoAddGPU" "false"
[ 76704.303] (**) Not automatically adding devices
[ 76704.303] (==) Automatically enabling devices
#### [ 76704.303] (**) Not automatically adding GPU devices
[ 76704.303] (==) Automatically binding GPU devices
[ 76704.303] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 76704.303] (WW) The directory "/usr/share/fonts/misc" does not exist.
[ 76704.303] 	Entry deleted from font path.
[ 76704.303] (WW) The directory "/usr/share/fonts/Type1" does not exist.
[ 76704.303] 	Entry deleted from font path.
[ 76704.303] (WW) The directory "/usr/share/fonts/100dpi" does not exist.
[ 76704.303] 	Entry deleted from font path.
[ 76704.303] (WW) The directory "/usr/share/fonts/75dpi" does not exist.
[ 76704.303] 	Entry deleted from font path.
[ 76704.303] (==) FontPath set to:
	/usr/share/fonts/TTF,
	/usr/share/fonts/OTF
[ 76704.303] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 76704.303] (==) |-->Input Device "<default pointer>"
[ 76704.303] (==) |-->Input Device "<default keyboard>"
[ 76704.303] (==) No Layout section. Using the default mouse configuration.
[ 76704.303] (==) No Layout section. Using the default keyboard configuration.
[ 76704.303] (II) Module ABI versions:
[ 76704.303] 	X.Org ANSI C Emulation: 0.4
[ 76704.303] 	X.Org Video Driver: 24.1
[ 76704.303] 	X.Org XInput driver : 24.1
[ 76704.303] 	X.Org Server Extension : 10.0
[ 76704.304] (++) using VT number 1

[ 76704.305] (II) systemd-logind: took control of session /org/freedesktop/login1/session/_314
#### [ 76704.305] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 76704.306] (II) systemd-logind: got fd for /dev/dri/card0 226:0 fd 10 paused 0
[ 76704.308] (--) PCI:*(10@0:0:0) 1002:731f:1da2:e410 rev 193, Mem @ 0xe0000000/268435456, 0xf0000000/2097152, 0xfcb00000/524288, I/O @ 0x0000e000/256, BIOS @ 0x????????/131072
[ 76704.308] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 76704.308] (II) LoadModule: "glx"
[ 76704.308] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 76704.309] (II) Module glx: vendor="X.Org Foundation"
[ 76704.309] 	compiled for 1.20.8, module version = 1.0.0
[ 76704.309] 	ABI class: X.Org Server Extension, version 10.0
[ 76704.309] (II) Applying OutputClass "AMDgpu" to /dev/dri/card0
[ 76704.309] 	loading driver: amdgpu
[ 76704.309] (==) Matched amdgpu as autoconfigured driver 0
[ 76704.309] (==) Matched ati as autoconfigured driver 1
[ 76704.309] (==) Matched modesetting as autoconfigured driver 2
[ 76704.309] (==) Matched fbdev as autoconfigured driver 3
[ 76704.309] (==) Matched vesa as autoconfigured driver 4
[ 76704.309] (==) Assigned the driver to the xf86ConfigLayout
[ 76704.309] (II) LoadModule: "amdgpu"
[ 76704.309] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[ 76704.309] (II) Module amdgpu: vendor="X.Org Foundation"
[ 76704.309] 	compiled for 1.20.8, module version = 19.1.0
[ 76704.309] 	Module class: X.Org Video Driver
[ 76704.309] 	ABI class: X.Org Video Driver, version 24.1
[ 76704.309] (II) LoadModule: "ati"
[ 76704.309] (WW) Warning, couldn't open module ati
[ 76704.309] (EE) Failed to load module "ati" (module does not exist, 0)
[ 76704.309] (II) LoadModule: "modesetting"
[ 76704.309] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 76704.309] (II) Module modesetting: vendor="X.Org Foundation"
[ 76704.309] 	compiled for 1.20.8, module version = 1.20.8
[ 76704.309] 	Module class: X.Org Video Driver
[ 76704.309] 	ABI class: X.Org Video Driver, version 24.1
[ 76704.309] (II) LoadModule: "fbdev"
[ 76704.309] (WW) Warning, couldn't open module fbdev
[ 76704.309] (EE) Failed to load module "fbdev" (module does not exist, 0)
[ 76704.309] (II) LoadModule: "vesa"
[ 76704.309] (WW) Warning, couldn't open module vesa
[ 76704.309] (EE) Failed to load module "vesa" (module does not exist, 0)
[ 76704.309] (II) LoadModule: "mouse"
[ 76704.309] (WW) Warning, couldn't open module mouse
[ 76704.309] (EE) Failed to load module "mouse" (module does not exist, 0)
[ 76704.309] (II) LoadModule: "kbd"
[ 76704.309] (WW) Warning, couldn't open module kbd
[ 76704.309] (EE) Failed to load module "kbd" (module does not exist, 0)
[ 76704.309] (II) AMDGPU: Driver for AMD Radeon:
	All GPUs supported by the amdgpu kernel driver
[ 76704.309] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 76704.310] (WW) Falling back to old probe method for modesetting
[ 76704.310] (II) AMDGPU(0): Creating default Display subsection in Screen section
	"Default Screen Section" for depth/fbbpp 24/32
[ 76704.310] (==) AMDGPU(0): Depth 24, (--) framebuffer bpp 32
[ 76704.310] (II) AMDGPU(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[ 76704.310] (==) AMDGPU(0): Default visual is TrueColor
[ 76704.310] (==) AMDGPU(0): RGB weight 888
[ 76704.310] (II) AMDGPU(0): Using 8 bits per RGB (8 bit DAC)
[ 76704.310] (--) AMDGPU(0): Chipset: "AMD Radeon RX 5700 XT" (ChipID = 0x731f)
[ 76704.310] (II) Loading sub module "fb"
[ 76704.310] (II) LoadModule: "fb"
[ 76704.310] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 76704.310] (II) Module fb: vendor="X.Org Foundation"
[ 76704.310] 	compiled for 1.20.8, module version = 1.0.0
[ 76704.310] 	ABI class: X.Org ANSI C Emulation, version 0.4
[ 76704.310] (II) Loading sub module "dri2"
[ 76704.310] (II) LoadModule: "dri2"
[ 76704.310] (II) Module "dri2" already built-in
[ 76704.348] (II) Loading sub module "glamoregl"
[ 76704.348] (II) LoadModule: "glamoregl"
[ 76704.348] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 76704.352] (II) Module glamoregl: vendor="X.Org Foundation"
[ 76704.352] 	compiled for 1.20.8, module version = 1.0.1
[ 76704.352] 	ABI class: X.Org ANSI C Emulation, version 0.4
[ 76704.360] (II) AMDGPU(0): glamor X acceleration enabled on AMD Radeon RX 5700 XT (NAVI10, DRM 3.37.0, 5.7.0-arch1-1, LLVM 10.0.0)
[ 76704.360] (II) AMDGPU(0): glamor detected, initialising EGL layer.
[ 76704.360] (==) AMDGPU(0): TearFree property default: auto
[ 76704.360] (==) AMDGPU(0): VariableRefresh: disabled
[ 76704.360] (II) AMDGPU(0): KMS Pageflipping: enabled
[ 76704.360] (II) AMDGPU(0): Output DisplayPort-0 has no monitor section
[ 76704.360] (II) AMDGPU(0): Output DisplayPort-1 has no monitor section
[ 76704.361] (II) AMDGPU(0): Output HDMI-A-0 has no monitor section
[ 76704.361] (II) AMDGPU(0): Output HDMI-A-1 has no monitor section
[ 76704.394] (II) AMDGPU(0): EDID for output DisplayPort-0
[ 76704.394] (II) AMDGPU(0): Manufacturer: DEL  Model: a0b8  Serial#: 809588300
[ 76704.394] (II) AMDGPU(0): Year: 2019  Week: 2
[ 76704.394] (II) AMDGPU(0): EDID Version: 1.4
[ 76704.394] (II) AMDGPU(0): Digital Display Input
[ 76704.394] (II) AMDGPU(0): 8 bits per channel
[ 76704.394] (II) AMDGPU(0): Digital interface is DisplayPort
[ 76704.394] (II) AMDGPU(0): Max Image Size [cm]: horiz.: 52  vert.: 32
[ 76704.394] (II) AMDGPU(0): Gamma: 2.20
[ 76704.394] (II) AMDGPU(0): DPMS capabilities: Off
[ 76704.394] (II) AMDGPU(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 YCrCb 4:2:2
[ 76704.394] (II) AMDGPU(0): First detailed timing is preferred mode
[ 76704.394] (II) AMDGPU(0): Preferred mode is native pixel format and refresh rate
[ 76704.394] (II) AMDGPU(0): redX: 0.660 redY: 0.332   greenX: 0.302 greenY: 0.613
[ 76704.394] (II) AMDGPU(0): blueX: 0.150 blueY: 0.063   whiteX: 0.313 whiteY: 0.329
[ 76704.394] (II) AMDGPU(0): Supported established timings:
[ 76704.394] (II) AMDGPU(0): 720x400@70Hz
[ 76704.394] (II) AMDGPU(0): 640x480@60Hz
[ 76704.394] (II) AMDGPU(0): 640x480@75Hz
[ 76704.394] (II) AMDGPU(0): 800x600@60Hz
[ 76704.394] (II) AMDGPU(0): 800x600@75Hz
[ 76704.394] (II) AMDGPU(0): 1024x768@60Hz
[ 76704.394] (II) AMDGPU(0): 1024x768@75Hz
[ 76704.394] (II) AMDGPU(0): 1280x1024@75Hz
[ 76704.394] (II) AMDGPU(0): Manufacturer's mask: 0
[ 76704.394] (II) AMDGPU(0): Supported standard timings:
[ 76704.394] (II) AMDGPU(0): #0: hsize: 1152  vsize 864  refresh: 75  vid: 20337
[ 76704.394] (II) AMDGPU(0): #1: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[ 76704.394] (II) AMDGPU(0): #2: hsize: 1600  vsize 1200  refresh: 60  vid: 16553
[ 76704.394] (II) AMDGPU(0): #3: hsize: 1920  vsize 1080  refresh: 60  vid: 49361
[ 76704.394] (II) AMDGPU(0): #4: hsize: 1920  vsize 1200  refresh: 60  vid: 209
[ 76704.394] (II) AMDGPU(0): Supported detailed timing:
[ 76704.394] (II) AMDGPU(0): clock: 154.0 MHz   Image Size:  518 x 324 mm
[ 76704.394] (II) AMDGPU(0): h_active: 1920  h_sync: 1968  h_sync_end 2000 h_blank_end 2080 h_border: 0
[ 76704.394] (II) AMDGPU(0): v_active: 1200  v_sync: 1203  v_sync_end 1209 v_blanking: 1235 v_border: 0
[ 76704.394] (II) AMDGPU(0): Serial No: 7MT0191C0AVL
[ 76704.394] (II) AMDGPU(0): Monitor name: DELL U2415
[ 76704.394] (II) AMDGPU(0): Ranges: V min: 49 V max: 61 Hz, H min: 30 H max: 83 kHz, PixClock max 175 MHz
[ 76704.394] (II) AMDGPU(0): Supported detailed timing:
[ 76704.394] (II) AMDGPU(0): clock: 148.5 MHz   Image Size:  518 x 324 mm
[ 76704.394] (II) AMDGPU(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[ 76704.394] (II) AMDGPU(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[ 76704.394] (II) AMDGPU(0): Supported detailed timing:
[ 76704.394] (II) AMDGPU(0): clock: 74.2 MHz   Image Size:  518 x 324 mm
[ 76704.394] (II) AMDGPU(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[ 76704.394] (II) AMDGPU(0): v_active: 540  v_sync: 542  v_sync_end 547 v_blanking: 562 v_border: 0
[ 76704.394] (II) AMDGPU(0): Supported detailed timing:
[ 76704.394] (II) AMDGPU(0): clock: 74.2 MHz   Image Size:  518 x 324 mm
[ 76704.394] (II) AMDGPU(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 h_blank_end 1650 h_border: 0
[ 76704.394] (II) AMDGPU(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking: 750 v_border: 0
[ 76704.394] (II) AMDGPU(0): Supported detailed timing:
[ 76704.394] (II) AMDGPU(0): clock: 27.0 MHz   Image Size:  518 x 324 mm
[ 76704.394] (II) AMDGPU(0): h_active: 720  h_sync: 736  h_sync_end 798 h_blank_end 858 h_border: 0
[ 76704.394] (II) AMDGPU(0): v_active: 480  v_sync: 489  v_sync_end 495 v_blanking: 525 v_border: 0
[ 76704.394] (II) AMDGPU(0): Number of EDID sections to follow: 1
[ 76704.394] (II) AMDGPU(0): EDID (in hex):
[ 76704.394] (II) AMDGPU(0): 	00ffffffffffff0010acb8a04c564130
[ 76704.394] (II) AMDGPU(0): 	021d0104a53420783a0495a9554d9d26
[ 76704.394] (II) AMDGPU(0): 	105054a54b00714f8180a940d1c0d100
[ 76704.394] (II) AMDGPU(0): 	010101010101283c80a070b023403020
[ 76704.394] (II) AMDGPU(0): 	360006442100001e000000ff00374d54
[ 76704.394] (II) AMDGPU(0): 	30313931433041564c0a000000fc0044
[ 76704.394] (II) AMDGPU(0): 	454c4c2055323431350a2020000000fd
[ 76704.394] (II) AMDGPU(0): 	00313d1e5311000a202020202020013b
[ 76704.394] (II) AMDGPU(0): 	02031cf14f9005040302071601141f12
[ 76704.394] (II) AMDGPU(0): 	132021222309070783010000023a8018
[ 76704.394] (II) AMDGPU(0): 	71382d40582c450006442100001e011d
[ 76704.394] (II) AMDGPU(0): 	8018711c1620582c250006442100009e
[ 76704.394] (II) AMDGPU(0): 	011d007251d01e206e28550006442100
[ 76704.394] (II) AMDGPU(0): 	001e8c0ad08a20e02d10103e96000644
[ 76704.394] (II) AMDGPU(0): 	21000018000000000000000000000000
[ 76704.394] (II) AMDGPU(0): 	0000000000000000000000000000000c
[ 76704.394] (II) AMDGPU(0): Printing probed modes for output DisplayPort-0
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1200"x60.0  154.00  1920 1968 2000 2080  1200 1203 1209 1235 +hsync +vsync (74.0 kHz eP)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x50.0  148.50  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (56.2 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x59.9  148.35  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.4 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x30.0   74.25  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (33.8 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x25.0   74.25  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (28.1 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x24.0   74.25  1920 2558 2602 2750  1080 1084 1089 1125 +hsync +vsync (27.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x30.0   74.18  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (33.7 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1920x1080"x24.0   74.18  1920 2558 2602 2750  1080 1084 1089 1125 +hsync +vsync (27.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1600x1200"x60.0  162.00  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (75.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1680x1050"x60.0  154.00  1680 1968 2000 2080  1050 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1440x900"x60.0  154.00  1440 1968 2000 2080  900 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1280x800"x60.0  154.00  1280 1968 2000 2080  800 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[ 76704.394] (II) AMDGPU(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x720"x50.0   74.25  1280 1720 1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x720"x59.9   74.18  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x576"x50.0   27.00  720 732 796 864  576 581 586 625 -hsync -vsync (31.2 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x480"x60.0   27.03  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x480"x59.9   27.00  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): EDID for output DisplayPort-1
[ 76704.395] (II) AMDGPU(0): EDID for output HDMI-A-0
[ 76704.395] (II) AMDGPU(0): Manufacturer: DEL  Model: a0ba  Serial#: 809588044
[ 76704.395] (II) AMDGPU(0): Year: 2019  Week: 2
[ 76704.395] (II) AMDGPU(0): EDID Version: 1.3
[ 76704.395] (II) AMDGPU(0): Digital Display Input
[ 76704.395] (II) AMDGPU(0): Max Image Size [cm]: horiz.: 52  vert.: 32
[ 76704.395] (II) AMDGPU(0): Gamma: 2.20
[ 76704.395] (II) AMDGPU(0): DPMS capabilities: StandBy Suspend Off
[ 76704.395] (II) AMDGPU(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
[ 76704.395] (II) AMDGPU(0): First detailed timing is preferred mode
[ 76704.395] (II) AMDGPU(0): redX: 0.660 redY: 0.332   greenX: 0.302 greenY: 0.613
[ 76704.395] (II) AMDGPU(0): blueX: 0.150 blueY: 0.063   whiteX: 0.313 whiteY: 0.329
[ 76704.395] (II) AMDGPU(0): Supported established timings:
[ 76704.395] (II) AMDGPU(0): 720x400@70Hz
[ 76704.395] (II) AMDGPU(0): 640x480@60Hz
[ 76704.395] (II) AMDGPU(0): 640x480@75Hz
[ 76704.395] (II) AMDGPU(0): 800x600@60Hz
[ 76704.395] (II) AMDGPU(0): 800x600@75Hz
[ 76704.395] (II) AMDGPU(0): 1024x768@60Hz
[ 76704.395] (II) AMDGPU(0): 1024x768@75Hz
[ 76704.395] (II) AMDGPU(0): 1280x1024@75Hz
[ 76704.395] (II) AMDGPU(0): Manufacturer's mask: 0
[ 76704.395] (II) AMDGPU(0): Supported standard timings:
[ 76704.395] (II) AMDGPU(0): #0: hsize: 1152  vsize 864  refresh: 75  vid: 20337
[ 76704.395] (II) AMDGPU(0): #1: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[ 76704.395] (II) AMDGPU(0): #2: hsize: 1600  vsize 1200  refresh: 60  vid: 16553
[ 76704.395] (II) AMDGPU(0): #3: hsize: 1920  vsize 1080  refresh: 60  vid: 49361
[ 76704.395] (II) AMDGPU(0): #4: hsize: 1920  vsize 1200  refresh: 60  vid: 209
[ 76704.395] (II) AMDGPU(0): Supported detailed timing:
[ 76704.395] (II) AMDGPU(0): clock: 154.0 MHz   Image Size:  518 x 324 mm
[ 76704.395] (II) AMDGPU(0): h_active: 1920  h_sync: 1968  h_sync_end 2000 h_blank_end 2080 h_border: 0
[ 76704.395] (II) AMDGPU(0): v_active: 1200  v_sync: 1203  v_sync_end 1209 v_blanking: 1235 v_border: 0
[ 76704.395] (II) AMDGPU(0): Serial No: 7MT0191C0AUL
[ 76704.395] (II) AMDGPU(0): Monitor name: DELL U2415
[ 76704.395] (II) AMDGPU(0): Ranges: V min: 49 V max: 61 Hz, H min: 30 H max: 83 kHz, PixClock max 175 MHz
[ 76704.395] (II) AMDGPU(0): Supported detailed timing:
[ 76704.395] (II) AMDGPU(0): clock: 148.5 MHz   Image Size:  518 x 324 mm
[ 76704.395] (II) AMDGPU(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[ 76704.395] (II) AMDGPU(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[ 76704.395] (II) AMDGPU(0): Supported detailed timing:
[ 76704.395] (II) AMDGPU(0): clock: 74.2 MHz   Image Size:  518 x 324 mm
[ 76704.395] (II) AMDGPU(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[ 76704.395] (II) AMDGPU(0): v_active: 540  v_sync: 542  v_sync_end 547 v_blanking: 562 v_border: 0
[ 76704.395] (II) AMDGPU(0): Supported detailed timing:
[ 76704.395] (II) AMDGPU(0): clock: 74.2 MHz   Image Size:  518 x 324 mm
[ 76704.395] (II) AMDGPU(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 h_blank_end 1650 h_border: 0
[ 76704.395] (II) AMDGPU(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking: 750 v_border: 0
[ 76704.395] (II) AMDGPU(0): Supported detailed timing:
[ 76704.395] (II) AMDGPU(0): clock: 27.0 MHz   Image Size:  518 x 324 mm
[ 76704.395] (II) AMDGPU(0): h_active: 720  h_sync: 736  h_sync_end 798 h_blank_end 858 h_border: 0
[ 76704.395] (II) AMDGPU(0): v_active: 480  v_sync: 489  v_sync_end 495 v_blanking: 525 v_border: 0
[ 76704.395] (II) AMDGPU(0): Number of EDID sections to follow: 1
[ 76704.395] (II) AMDGPU(0): EDID (in hex):
[ 76704.395] (II) AMDGPU(0): 	00ffffffffffff0010acbaa04c554130
[ 76704.395] (II) AMDGPU(0): 	021d010380342078ea0495a9554d9d26
[ 76704.395] (II) AMDGPU(0): 	105054a54b00714f8180a940d1c0d100
[ 76704.395] (II) AMDGPU(0): 	010101010101283c80a070b023403020
[ 76704.395] (II) AMDGPU(0): 	360006442100001e000000ff00374d54
[ 76704.395] (II) AMDGPU(0): 	30313931433041554c0a000000fc0044
[ 76704.395] (II) AMDGPU(0): 	454c4c2055323431350a2020000000fd
[ 76704.395] (II) AMDGPU(0): 	00313d1e5311000a20202020202001b1
[ 76704.395] (II) AMDGPU(0): 	020322f14f9005040302071601141f12
[ 76704.395] (II) AMDGPU(0): 	132021222309070765030c0010008301
[ 76704.395] (II) AMDGPU(0): 	0000023a801871382d40582c45000644
[ 76704.395] (II) AMDGPU(0): 	2100001e011d8018711c1620582c2500
[ 76704.395] (II) AMDGPU(0): 	06442100009e011d007251d01e206e28
[ 76704.395] (II) AMDGPU(0): 	550006442100001e8c0ad08a20e02d10
[ 76704.395] (II) AMDGPU(0): 	103e9600064421000018000000000000
[ 76704.395] (II) AMDGPU(0): 	00000000000000000000000000000082
[ 76704.395] (II) AMDGPU(0): Printing probed modes for output HDMI-A-0
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1200"x60.0  154.00  1920 1968 2000 2080  1200 1203 1209 1235 +hsync +vsync (74.0 kHz eP)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x50.0  148.50  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (56.2 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x59.9  148.35  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.4 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x30.0   74.25  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (33.8 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x25.0   74.25  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (28.1 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x24.0   74.25  1920 2558 2602 2750  1080 1084 1089 1125 +hsync +vsync (27.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x30.0   74.18  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (33.7 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1920x1080"x24.0   74.18  1920 2558 2602 2750  1080 1084 1089 1125 +hsync +vsync (27.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1600x1200"x60.0  162.00  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (75.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1680x1050"x60.0  154.00  1680 1968 2000 2080  1050 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1440x900"x60.0  154.00  1440 1968 2000 2080  900 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x800"x60.0  154.00  1280 1968 2000 2080  800 1203 1209 1235 +hsync +vsync (74.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x720"x50.0   74.25  1280 1720 1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1280x720"x59.9   74.18  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x576"x50.0   27.00  720 732 796 864  576 581 586 625 -hsync -vsync (31.2 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x480"x60.0   27.03  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x480"x59.9   27.00  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[ 76704.395] (II) AMDGPU(0): EDID for output HDMI-A-1
[ 76704.395] (II) AMDGPU(0): Output DisplayPort-0 connected
[ 76704.395] (II) AMDGPU(0): Output DisplayPort-1 disconnected
[ 76704.395] (II) AMDGPU(0): Output HDMI-A-0 connected
[ 76704.395] (II) AMDGPU(0): Output HDMI-A-1 disconnected
[ 76704.395] (II) AMDGPU(0): Using spanning desktop for initial modes
[ 76704.395] (II) AMDGPU(0): Output DisplayPort-0 using initial mode 1920x1200 +0+0
[ 76704.395] (II) AMDGPU(0): Output HDMI-A-0 using initial mode 1920x1200 +1920+0
[ 76704.395] (II) AMDGPU(0): mem size init: gart size :1fe6b0000 vram size: s:1fd85d000 visible:f56b000
[ 76704.395] (==) AMDGPU(0): DPI set to (96, 96)
[ 76704.395] (==) AMDGPU(0): Using gamma correction (1.0, 1.0, 1.0)
[ 76704.395] (II) Loading sub module "ramdac"
[ 76704.395] (II) LoadModule: "ramdac"
[ 76704.395] (II) Module "ramdac" already built-in
[ 76704.395] (II) UnloadModule: "modesetting"
[ 76704.395] (II) Unloading modesetting
[ 76704.395] (II) AMDGPU(0): [DRI2] Setup complete
[ 76704.395] (II) AMDGPU(0): [DRI2]   DRI driver: radeonsi
[ 76704.395] (II) AMDGPU(0): [DRI2]   VDPAU driver: radeonsi
[ 76704.396] (II) AMDGPU(0): Front buffer pitch: 15360 bytes
[ 76704.396] (II) AMDGPU(0): SYNC extension fences enabled
[ 76704.396] (II) AMDGPU(0): Present extension enabled
[ 76704.396] (==) AMDGPU(0): DRI3 enabled
[ 76704.396] (==) AMDGPU(0): Backing store enabled
[ 76704.396] (II) AMDGPU(0): Direct rendering enabled
[ 76704.422] (II) AMDGPU(0): Use GLAMOR acceleration.
[ 76704.422] (II) AMDGPU(0): Acceleration enabled
[ 76704.422] (==) AMDGPU(0): DPMS enabled
[ 76704.422] (==) AMDGPU(0): Silken mouse disabled
[ 76704.422] (II) AMDGPU(0): Set up textured video (glamor)
[ 76704.444] (II) Initializing extension Generic Event Extension
[ 76704.444] (II) Initializing extension SHAPE
[ 76704.444] (II) Initializing extension MIT-SHM
[ 76704.444] (II) Initializing extension XInputExtension
[ 76704.444] (II) Initializing extension XTEST
[ 76704.444] (II) Initializing extension BIG-REQUESTS
[ 76704.444] (II) Initializing extension SYNC
[ 76704.444] (II) Initializing extension XKEYBOARD
[ 76704.444] (II) Initializing extension XC-MISC
[ 76704.444] (II) Initializing extension SECURITY
[ 76704.444] (II) Initializing extension XFIXES
[ 76704.444] (II) Initializing extension RENDER
[ 76704.444] (II) Initializing extension RANDR
[ 76704.444] (II) Initializing extension COMPOSITE
[ 76704.444] (II) Initializing extension DAMAGE
[ 76704.444] (II) Initializing extension MIT-SCREEN-SAVER
[ 76704.444] (II) Initializing extension DOUBLE-BUFFER
[ 76704.444] (II) Initializing extension RECORD
[ 76704.444] (II) Initializing extension DPMS
[ 76704.444] (II) Initializing extension Present
[ 76704.444] (II) Initializing extension DRI3
[ 76704.444] (II) Initializing extension X-Resource
[ 76704.444] (II) Initializing extension XVideo
[ 76704.444] (II) Initializing extension XVideo-MotionCompensation
[ 76704.444] (II) Initializing extension GLX
[ 76704.447] (II) AIGLX: Loaded and initialized radeonsi
[ 76704.447] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 76704.447] (II) Initializing extension XFree86-VidModeExtension
[ 76704.447] (II) Initializing extension XFree86-DGA
[ 76704.447] (II) Initializing extension XFree86-DRI
[ 76704.447] (II) Initializing extension DRI2
[ 76704.448] (II) AMDGPU(0): Setting screen physical size to 1016 x 317
[ 76704.533] (II) LoadModule: "mouse"
[ 76704.533] (WW) Warning, couldn't open module mouse
[ 76704.533] (EE) Failed to load module "mouse" (module does not exist, 0)
[ 76704.533] (EE) No input driver matching `mouse'
[ 76704.533] (II) Falling back to input driver `libinput'
[ 76704.533] (II) LoadModule: "libinput"
[ 76704.533] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so
[ 76704.535] (II) Module libinput: vendor="X.Org Foundation"
[ 76704.535] 	compiled for 1.20.8, module version = 0.30.0
[ 76704.535] 	Module class: X.Org XInput Driver
[ 76704.535] 	ABI class: X.Org XInput driver, version 24.1
[ 76704.535] (II) Using input driver 'libinput' for '<default pointer>'
[ 76704.535] (**) Option "CorePointer" "on"
[ 76704.535] (**) <default pointer>: always reports core events
[ 76704.535] (EE) PreInit returned 2 for "<default pointer>"
[ 76704.535] (II) UnloadModule: "libinput"
[ 76704.535] (II) LoadModule: "kbd"
[ 76704.535] (WW) Warning, couldn't open module kbd
[ 76704.535] (EE) Failed to load module "kbd" (module does not exist, 0)
[ 76704.535] (EE) No input driver matching `kbd'
[ 76704.535] (II) Falling back to input driver `libinput'
[ 76704.535] (II) Using input driver 'libinput' for '<default keyboard>'
[ 76704.535] (**) Option "CoreKeyboard" "on"
[ 76704.535] (**) <default keyboard>: always reports core events
[ 76704.535] (EE) PreInit returned 2 for "<default keyboard>"
[ 76704.535] (II) UnloadModule: "libinput"
[ 76704.544] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[ 76704.544] (II) AutoAddDevices is off - not adding device.
[ 76704.545] (II) config/udev: Adding input device Power Button (/dev/input/event0)
[ 76704.545] (II) AutoAddDevices is off - not adding device.
[ 76704.545] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=3 (/dev/input/event9)
[ 76704.545] (II) AutoAddDevices is off - not adding device.
[ 76704.545] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=7 (/dev/input/event10)
[ 76704.546] (II) AutoAddDevices is off - not adding device.
[ 76704.546] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=8 (/dev/input/event11)
[ 76704.546] (II) AutoAddDevices is off - not adding device.
[ 76704.546] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=9 (/dev/input/event12)
[ 76704.546] (II) AutoAddDevices is off - not adding device.
[ 76704.546] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=10 (/dev/input/event13)
[ 76704.546] (II) AutoAddDevices is off - not adding device.
[ 76704.547] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=11 (/dev/input/event14)
[ 76704.547] (II) AutoAddDevices is off - not adding device.
[ 76704.548] (II) config/udev: Adding input device Logitech Optical USB Mouse (/dev/input/event2)
[ 76704.548] (II) AutoAddDevices is off - not adding device.
[ 76704.548] (II) config/udev: Adding input device Logitech Optical USB Mouse (/dev/input/mouse0)
[ 76704.548] (II) AutoAddDevices is off - not adding device.
[ 76704.549] (II) config/udev: Adding input device USB USB Keyboard (/dev/input/event4)
[ 76704.549] (II) AutoAddDevices is off - not adding device.
[ 76704.550] (II) config/udev: Adding input device USB USB Keyboard Consumer Control (/dev/input/event5)
[ 76704.550] (II) AutoAddDevices is off - not adding device.
[ 76704.550] (II) config/udev: Adding input device USB USB Keyboard System Control (/dev/input/event6)
[ 76704.551] (II) AutoAddDevices is off - not adding device.
[ 76704.551] (II) config/udev: Adding input device LITE-ON Technology USB NetVista Full Width Keyboard. (/dev/input/event3)
[ 76704.551] (II) AutoAddDevices is off - not adding device.
[ 76704.552] (II) config/udev: Adding input device Logitech G100s Optical Gaming Mouse (/dev/input/event7)
[ 76704.552] (II) AutoAddDevices is off - not adding device.
[ 76704.553] (II) config/udev: Adding input device Logitech G100s Optical Gaming Mouse (/dev/input/mouse1)
[ 76704.553] (II) AutoAddDevices is off - not adding device.
[ 76704.553] (II) config/udev: Adding input device PC Speaker (/dev/input/event8)
[ 76704.553] (II) AutoAddDevices is off - not adding device.
[ 76704.554] (II) config/udev: Adding input device USB USB Keyboard (/dev/input/event15)
[ 76704.554] (II) AutoAddDevices is off - not adding device.
[ 76704.554] (II) config/udev: Adding input device USB USB Keyboard Consumer Control (/dev/input/event16)
[ 76704.554] (II) AutoAddDevices is off - not adding device.
[ 76704.554] (II) config/udev: Adding input device LITE-ON Technology USB NetVista Full Width Keyboard. (/dev/input/event17)
[ 76704.554] (II) AutoAddDevices is off - not adding device.

I have prefixed interesting lines with "####". How do I get X to ignore the GPU from udev?

The best solution to a problem is usually the easiest one.

Offline

#3 2020-06-09 20:23:22

Lone_Wolf
Administrator
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 14,889

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

You could force X to use pci-id that doesn't exist, then it would not find that gpu and abort.
I doubt that's what you want though.

Have you tried starting each seat with its own Xorg config that only lists the devices you want that seat to see ?

man xorg wrote:

      -config file
               Read  the server configuration from file.  This option will work for any file when the server is run as root (i.e, with real-
               uid 0), or for files relative to a directory in the config search path for all other users.

Last edited by Lone_Wolf (2020-06-09 20:23:50)

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Offline

#4 2020-06-09 20:59:57

DexterLB
Member
Registered: 2011-06-20
Posts: 51

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

Lone_Wolf wrote:

Have you tried starting each seat with its own Xorg config that only lists the devices you want that seat to see ?

That's precisely what I've done, and X still sees the unlisted GPU

The best solution to a problem is usually the easiest one.

Offline

#5 2020-06-10 09:49:10

Lone_Wolf
Administrator
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 14,889

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

and X still sees the unlisted GPU

Everything you posted indicates you have only one GPU in your system.
What are you trying to achieve ?

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Offline

#6 2020-06-10 10:13:48

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 74,274

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

https://wiki.archlinux.org/index.php/Xo … s_hardware

Zaphod on one GPU usually requires a nested server.

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#7 2020-06-10 11:04:16

DexterLB
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Registered: 2011-06-20
Posts: 51

Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

seth wrote:

Zaphod on one GPU usually requires a nested server.

Is this a certainty?
According to the AMDGPU documentation, one can spawn multiple instances of the driver with different ZaphodHeads. It is unclear whether it matters if the instances are on disperate X servers (or multiple X screens on one server).

The best solution to a problem is usually the easiest one.

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#8 2020-06-10 13:12:32

seth
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Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

Option "ZaphodHeads" "string"
Specify the RandR output(s) to use with zaphod mode for a particular driver instance. If you use this option you must use this option for all instances of the driver.
For example: Option "ZaphodHeads" "LVDS,VGA-0" will assign xrandr outputs LVDS and VGA-0 to this instance of the driver.

There's no implication that this will work w/ multiple driver instances on the *same* GPU and the evidence suggests the opposite.
In either case, there's a pretty wild mix of "MatchSeat" and "Screen" in the Device sections and ambigious Device identifiers.
So you'd have to clean up that (the "Screen" lines should be pointless, you want two Server/Screen/Device chains.

Also get startx/logind out of the equation and try to start Xorg directly.

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#9 2020-06-13 14:04:22

DexterLB
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Registered: 2011-06-20
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Re: [SOLVED] Xorg multi-seat with AMDGPU and ZaphodHeads

Indeed, the only solution that doesn't require nesting is to use two separate GPUs. When there is more than one GPU and the IsolateDevice (or SingleCard) option is used, X correctly reserves just a single device.

Marking as Solved.

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