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#1 2023-08-14 10:05:33
- Rambo-IT
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- Registered: 2023-08-14
- Posts: 14
External monitor not rendering correctly on specific resolutions
Hi,
i have fresh new arch installation on my lenovo legion 5-i laptop and i have encountred the following problem:
The is problem that, when i set the resolution to 1680x1050 on my external monitor, the display became completly segmented in orizontal lines and unusable (as show in the picture); but if i set a resolution different from 1680x1050 the rendering of the display is correct.
The PC have an integrated and dedicated Intel and Nvidia card, and the HDMI port is connected at the Nvidia card.
I have installed nvidia-optimus to switch between the two.
As graphic-server i use wayland and as desktop-enviroment i use KDE-Plasma.
Photo of the screen: https://pasteboard.co/R5RSTDRsopqs.jpg
Hope someone can help!
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#2 2023-08-14 15:14:42
- seth
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Re: External monitor not rendering correctly on specific resolutions
What exactly is "a resolution different from 1680x1050", does the same happen on X11 and then please post your xorg log and the output of "xrandr -q"
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#3 2023-08-14 16:18:39
- Rambo-IT
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Re: External monitor not rendering correctly on specific resolutions
With X11 the problem does not occor and the general performance of the system is a lot more fluid then Wayland.
Here is the xorg log with the wayland session: https://pastebin.com/W5Pdp9gL
The log with X11 session: https://pastebin.com/u7F9nBzZ
And the result of "xrandr -q" (with Wayland session):
Screen 0: minimum 16 x 16, current 3840 x 1200, maximum 32767 x 32767
eDP-1 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 340mm x 220mm
1920x1200 59.86*+
1600x1200 59.82
1440x1080 59.87
1400x1050 59.86
1280x1024 59.81
1280x960 59.79
1152x864 59.78
1024x768 59.68
800x600 59.47
640x480 59.38
320x240 59.52
1680x1050 59.85
1440x900 59.75
1280x800 59.81
1152x720 59.75
960x600 59.63
928x580 59.53
800x500 59.50
768x480 59.38
720x480 59.71
640x400 59.20
320x200 58.96
1920x1080 59.88
1600x900 59.82
1368x768 59.71
1280x720 59.65
1024x576 59.58
864x486 59.45
720x400 59.55
640x350 58.91
HDMI-A-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1080 59.96*+
1440x1080 59.99
1400x1050 59.98
1280x1024 59.89
1280x960 59.94
1152x864 59.96
1024x768 59.92
800x600 59.86
640x480 59.38
320x240 59.52
1680x1050 59.95
1440x900 59.89
1280x800 59.81
1152x720 59.97
960x600 59.63
928x580 59.88
800x500 59.50
768x480 59.90
720x480 59.71
640x400 59.95
320x200 58.96
1600x900 59.95
1368x768 59.88
1280x720 59.86
1024x576 59.90
864x486 59.92
720x400 59.55
640x350 59.77 Offline
#4 2023-08-14 16:32:28
- seth
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Re: External monitor not rendering correctly on specific resolutions
xrandr is mostly useless on wayland.
Nevertheless, does 1920x1080 (the apparent current HDMI resolution) work ok on wayland?
Does 1600x900 ? (Why are you trying to use a 16:10 modeline to begin with?)
Do you actually have https://wiki.archlinux.org/title/NVIDIA … de_setting enabled?
If so, check the EDID in /sys/class/drm/card1-HDMI*/edid, https://aur.archlinux.org/packages/edid-decode-git
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#5 2023-08-14 17:22:51
- Rambo-IT
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- Registered: 2023-08-14
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Re: External monitor not rendering correctly on specific resolutions
the 1920x1080 resolution work fine with this monitor, but i have another 16:10 monitor that goes up to max 1680x1050.
The problem is that in both monitor the 1680x1050 and 1440x900 resolution give me problems (both 16:10), but the 1280x800 resolution (also 16:10) work fine.
If i try to set the resolution to 1600x900 with this command
xrandr --output HDMI-A-1 --mode "1600x900"i get the following error:
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 7 (RRSetScreenSize)
Serial number of failed request: 22
Current serial number in output stream: 23I also set the kernel parameter by modifying the line GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub file in the following way:
GRUB_CMDLINE_LINUX_DEFAULT="nvidia_drm.modeset=1 loglevel=3 quiet"The result of edid-decode is:
edid-decode (hex):
00 ff ff ff ff ff ff 00 4c 2d 86 04 00 00 00 00
06 13 01 03 80 10 09 78 0a ee 91 a3 54 4c 99 26
0f 50 54 bf ef 80 71 4f 81 40 81 80 a9 40 81 00
b3 00 95 00 01 01 02 3a 80 18 71 38 2d 40 58 2c
45 00 a0 5a 00 00 00 1e 01 1d 00 bc 52 d0 1e 20
b8 28 55 40 a0 5a 00 00 00 1e 00 00 00 fd 00 18
4b 1a 51 17 00 0a 20 20 20 20 20 20 00 00 00 fc
00 53 79 6e 63 4d 61 73 74 65 72 0a 20 20 01 a5
02 03 23 f1 4b 93 04 05 14 03 12 10 1f 20 21 22
23 09 07 07 83 01 00 00 e2 00 0f 67 03 0c 00 10
00 b8 2d 01 1d 80 d0 72 1c 16 20 10 2c 25 80 a0
5a 00 00 00 9e 01 1d 80 18 71 1c 16 20 58 2c 25
00 a0 5a 00 00 00 9e 01 1d 00 72 51 d0 1e 20 6e
28 55 00 a0 5a 00 00 00 1e 8c 0a d0 90 20 40 31
20 0c 40 55 00 a0 5a 00 00 00 18 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7a
----------------
Block 0, Base EDID:
EDID Structure Version & Revision: 1.3
Vendor & Product Identification:
Manufacturer: SAM
Model: 1158
Made in: week 6 of 2009
Basic Display Parameters & Features:
Digital display
Maximum image size: 16 cm x 9 cm
Gamma: 2.20
RGB color display
First detailed timing is the preferred timing
Color Characteristics:
Red : 0.6396, 0.3300
Green: 0.2998, 0.5996
Blue : 0.1503, 0.0595
White: 0.3125, 0.3291
Established Timings I & II:
IBM : 720x400 70.081663 Hz 9:5 31.467 kHz 28.320000 MHz
DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
Apple : 640x480 66.666667 Hz 4:3 35.000 kHz 30.240000 MHz
DMT 0x05: 640x480 72.808802 Hz 4:3 37.861 kHz 31.500000 MHz
DMT 0x06: 640x480 75.000000 Hz 4:3 37.500 kHz 31.500000 MHz
DMT 0x08: 800x600 56.250000 Hz 4:3 35.156 kHz 36.000000 MHz
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
DMT 0x0a: 800x600 72.187572 Hz 4:3 48.077 kHz 50.000000 MHz
DMT 0x0b: 800x600 75.000000 Hz 4:3 46.875 kHz 49.500000 MHz
Apple : 832x624 74.551266 Hz 4:3 49.726 kHz 57.284000 MHz
DMT 0x10: 1024x768 60.003840 Hz 4:3 48.363 kHz 65.000000 MHz
DMT 0x11: 1024x768 70.069359 Hz 4:3 56.476 kHz 75.000000 MHz
DMT 0x12: 1024x768 75.028582 Hz 4:3 60.023 kHz 78.750000 MHz
DMT 0x24: 1280x1024 75.024675 Hz 5:4 79.976 kHz 135.000000 MHz
Apple : 1152x870 75.061550 Hz 192:145 68.681 kHz 100.000000 MHz
Standard Timings:
DMT 0x15: 1152x864 75.000000 Hz 4:3 67.500 kHz 108.000000 MHz
DMT 0x20: 1280x960 60.000000 Hz 4:3 60.000 kHz 108.000000 MHz
DMT 0x23: 1280x1024 60.019740 Hz 5:4 63.981 kHz 108.000000 MHz
DMT 0x33: 1600x1200 60.000000 Hz 4:3 75.000 kHz 162.000000 MHz
DMT 0x1c: 1280x800 59.810326 Hz 16:10 49.702 kHz 83.500000 MHz
DMT 0x3a: 1680x1050 59.954250 Hz 16:10 65.290 kHz 146.250000 MHz
DMT 0x2f: 1440x900 59.887445 Hz 16:10 55.935 kHz 106.500000 MHz
Detailed Timing Descriptors:
DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (160 mm x 90 mm)
Hfront 88 Hsync 44 Hback 148 Hpol P
Vfront 4 Vsync 5 Vback 36 Vpol P
DTD 2: 1280x720 50.000000 Hz 16:9 37.500 kHz 74.250000 MHz (160 mm x 90 mm)
Hfront 440 Hsync 40 Hback 220 Hpol P
Vfront 5 Vsync 5 Vback 20 Vpol P
Display Range Limits:
Monitor ranges (GTF): 24-75 Hz V, 26-81 kHz H, max dotclock 230 MHz
Display Product Name: 'SyncMaster'
Extension blocks: 1
Checksum: 0xa5
----------------
Block 1, CTA-861 Extension Block:
Revision: 3
Underscans IT Video Formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
Native detailed modes: 1
Video Data Block:
VIC 19: 1280x720 50.000000 Hz 16:9 37.500 kHz 74.250000 MHz (native)
VIC 4: 1280x720 60.000000 Hz 16:9 45.000 kHz 74.250000 MHz
VIC 5: 1920x1080i 60.000000 Hz 16:9 33.750 kHz 74.250000 MHz
VIC 20: 1920x1080i 50.000000 Hz 16:9 28.125 kHz 74.250000 MHz
VIC 3: 720x480 59.940060 Hz 16:9 31.469 kHz 27.000000 MHz
VIC 18: 720x576 50.000000 Hz 16:9 31.250 kHz 27.000000 MHz
VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
VIC 31: 1920x1080 50.000000 Hz 16:9 56.250 kHz 148.500000 MHz
VIC 32: 1920x1080 24.000000 Hz 16:9 27.000 kHz 74.250000 MHz
VIC 33: 1920x1080 25.000000 Hz 16:9 28.125 kHz 74.250000 MHz
VIC 34: 1920x1080 30.000000 Hz 16:9 33.750 kHz 74.250000 MHz
Audio Data Block:
Linear PCM:
Max channels: 2
Supported sample rates (kHz): 48 44.1 32
Supported sample sizes (bits): 24 20 16
Speaker Allocation Data Block:
FL/FR - Front Left/Right
Video Capability Data Block:
YCbCr quantization: No Data
RGB quantization: No Data
PT scan behavior: No Data
IT scan behavior: Supports both over- and underscan
CE scan behavior: Supports both over- and underscan
Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
Source physical address: 1.0.0.0
Supports_AI
DC_36bit
DC_30bit
DC_Y444
Maximum TMDS clock: 225 MHz
Detailed Timing Descriptors:
DTD 3: 1920x1080i 50.000000 Hz 16:9 28.125 kHz 74.250000 MHz (160 mm x 90 mm)
Hfront 528 Hsync 44 Hback 148 Hpol P
Vfront 2 Vsync 5 Vback 15 Vpol P Vfront +0.5 Odd Field
Vfront 2 Vsync 5 Vback 15 Vpol P Vback +0.5 Even Field
DTD 4: 1920x1080i 60.000000 Hz 16:9 33.750 kHz 74.250000 MHz (160 mm x 90 mm)
Hfront 88 Hsync 44 Hback 148 Hpol P
Vfront 2 Vsync 5 Vback 15 Vpol P Vfront +0.5 Odd Field
Vfront 2 Vsync 5 Vback 15 Vpol P Vback +0.5 Even Field
DTD 5: 1280x720 60.000000 Hz 16:9 45.000 kHz 74.250000 MHz (160 mm x 90 mm)
Hfront 110 Hsync 40 Hback 220 Hpol P
Vfront 5 Vsync 5 Vback 20 Vpol P
DTD 6: 720x576 50.000000 Hz 5:4 31.250 kHz 27.000000 MHz (160 mm x 90 mm)
Hfront 12 Hsync 64 Hback 68 Hpol N
Vfront 5 Vsync 5 Vback 39 Vpol N
Checksum: 0x7a Unused space in Extension Block: 20 bytesOffline
#6 2023-08-14 21:22:26
- seth
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Re: External monitor not rendering correctly on specific resolutions
The EDID you posted doesn't advertise 1600x900 (probably added by the server) - you can get the nvidia ddx driver to ignore that, but that's irrelevant to your problem.
So it's not the signal rate, the polarity of the 1080p modeline there looks off, but that mode works.
Compare the output of "xrandr --verbose" when setting a bad mode (1680x1050) on X11 and wayland.
(I don't know whether the wayland will produce meaningful/reliable output, but it's my best idea for what might be different.
Finally, check the behavior w/ a different wayland compositor like sway or weston to rule out that this is just a weird bug in kwin_wayland.
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#7 2023-08-15 20:26:48
- Rambo-IT
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- Registered: 2023-08-14
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Re: External monitor not rendering correctly on specific resolutions
xrandr wayland: https://pastebin.com/eKG3Aw9H
xrandr X11: https://pastebin.com/uzLFKHXu
the wayland log is much shorter then X11.
for the compositor i didn't get how to use them as a compositor, because after the installation, i was only able to open them as a windows inside the current wayland/X11 session or as a very basic standalone session, but without any plasma inside
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#8 2023-08-15 20:52:13
- seth
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Re: External monitor not rendering correctly on specific resolutions
for the compositor i didn't get how to use them as a compositor
You choose them as session type in whatever you DM probably use.
the wayland log is much shorter then X11.
The wayland randr emulation does't have the actual EDID
1680x1050 (0x65) 146.250MHz -HSync +VSync *current
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.29KHz
v: height 1050 start 1053 end 1059 total 1089 clock 59.95Hz
1680x1050 (0x30) 146.000MHz -HSync +VSync *current +preferred
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.18KHz
v: height 1050 start 1053 end 1059 total 1089 clock 59.85HzThey're running slightly different modelines, X11 gets it from the EDID standrd timings:
DMT 0x3a: 1680x1050 59.954250 Hz 16:10 65.290 kHz 146.250000 MHzwhich is also the standard CVT1 mode (no reduced blanking)
Not sure why wayland runs a marginally slower clock, or this is some rounding issue and I doubt it matters: the eDP has a similar deviance.
=> The artifacts likely do not stem from a bad modeline, but exist in the compositors render.
Try one of the other compositors first.
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#9 2023-08-16 14:34:12
- Rambo-IT
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Re: External monitor not rendering correctly on specific resolutions
I tried again changing the compositor following this https://wiki.archlinux.org/title/SDDM#KDE_/_KWin but i was able to open again just a basic weston session without any theme.
i think i'm missing something...
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#10 2023-08-16 14:39:50
- seth
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Re: External monitor not rendering correctly on specific resolutions
What? You just click the gear or whatever the icon looks like in SDDM and select a weston session, then log into that.
Do NOT log into a KDE session first.
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#11 2023-08-16 15:48:53
- Rambo-IT
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- Registered: 2023-08-14
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Re: External monitor not rendering correctly on specific resolutions
In the login screen i have 3 options
- Plasma(X11)
- Plasma(Wayland)
- Weston
if i open the Weston session i get this enviroment https://linux-cdn.softpedia.com/screens … land_1.png and the HDMI monitor is not detected anymore, probably because its not possible to switch graphic card with optimus-manager.
if i try to change any resolution with
xrandr --output eDP-1 --mode 1920x1440i get
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 7 (RRSetScreenSize)
Serial number of failed request: 22
Current serial number in output stream: 23Offline
#12 2023-08-16 16:06:10
- seth
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Re: External monitor not rendering correctly on specific resolutions
That's weston, but it looks nested? Why is there a window decoration around the desktop?
https://aur.archlinux.org/packages/wlr-randr
Edit: or https://aur.archlinux.org/packages/wlr-randr-git (idk. whether there're still build issues w/ the first)
Last edited by seth (2023-08-16 16:07:29)
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#13 2023-08-17 07:06:36
- Rambo-IT
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- Registered: 2023-08-14
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Re: External monitor not rendering correctly on specific resolutions
Sorry, wrong weston example, there isn't a windows, is like this: https://upload.wikimedia.org/wikipedia/ … enshot.png
if i try to run this
https://aur.archlinux.org/packages/wlr-randr-gitin a wayland or weston session i get this error:
compositor doesn't support wlr-output-management-unstable-v1Do i need to install some wayland protocols?
Or i found this command
kscreen-doctorbut idk if it does the same things then wlr-randr
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