Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

Konstantin1722 · 2023-07-28 08:02:45

Hello, I've encountered a strange problem, after upgrading Arch Linux, the second monitor stopped working. It feels like the display is not just black, but turned off. At the same time, the display shows that the screen is working, the system sees it and there are no errors in the log.

The screen manager has the same situation (!) as I described in the paragraph above.

The monitor is definitely intact, it works as it should if you roll back to a previous system snapshot. The problem persists for half a year now.

I have Arch Linux installed with KDE Plasma and xorg, with sddm (+ sddm-kcm package) as screen manager.

My video card and driver used (GeForce GT 730 + nouveau):

01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 730] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)

01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 730] (rev a1)
        Subsystem: ASUSTeK Computer Inc. GF108 [GeForce GT 730]
        Kernel driver in use: nouveau

xrandr outputs (when both monitors are connected):

Monitors: 2
 0: +*DVI-I-1 1920/518x1200/324+1920+0  DVI-I-1
 1: +HDMI-1 1920/708x1080/398+0+60  HDMI-1

Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 16384 x 16384
DVI-I-1 connected primary 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1920x1080     59.96    60.00    59.93
   1600x1200     65.00    60.00
   1680x1050     59.95    59.88
   1400x1050     59.98
   1600x900      59.95    59.82
   1280x1024     60.02
   1400x900      59.96    59.88
   1280x960      60.00
   1440x810      59.97
   1368x768      59.88    59.85
   1280x800      59.99    59.97    59.81    59.91
   1280x720      60.00    59.99    59.86    59.74
   1024x768      60.04    70.07    60.00
   960x720       60.00
   928x696       60.05
   896x672       60.01
   1024x576      59.95    59.96    59.90    59.82
   960x600       59.93    60.00
   960x540       59.96    59.99    59.63    59.82
   800x600       70.00    65.00    60.00    60.32    56.25
   840x525       60.01    59.88
   864x486       59.92    59.57
   700x525       59.98
   800x450       59.95    59.82
   640x512       60.02
   700x450       59.96    59.88
   640x480       60.00    59.94
   720x405       59.51    58.99
   720x400       70.08
   684x384       59.88    59.85
   640x400       59.88    59.98
   640x360       59.86    59.83    59.84    59.32
   512x384       70.07    60.00
   512x288       60.00    59.92
   480x270       59.63    59.82
   400x300       60.32    56.34
   432x243       59.92    59.57
   320x240       60.05
   360x202       59.51    59.13
   320x180       59.84    59.32
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1920x1080+0+60 (normal left inverted right x axis y axis) 708mm x 398mm
   1920x1080i    60.00*+  60.00    59.94
   1920x1200     59.95
   1920x1080     59.96    60.00    60.00    59.94    59.93
   1600x1200     65.00    60.00
   1680x1050     59.95    59.88
   1400x1050     74.76    59.98
   1600x900      59.95    59.82
   1280x1024     76.00    75.02    72.05    60.02
   1400x900      59.96    59.88
   1280x960      60.00
   1440x810      59.97
   1368x768      59.88    59.85
   1280x800      59.99    59.97    59.81    59.91
   1152x864      75.00
   1280x720      60.00    59.99    59.86    60.00    59.94    59.74
   1024x768      75.05    60.04    75.03    70.07    60.00
   960x720       75.00    60.00
   1440x480i     59.94
   928x696       75.00    60.05
   896x672       75.05    60.01
   1024x576      59.95    59.96    59.90    59.82
   960x600       59.93    60.00
   832x624       74.55
   960x540       59.96    59.99    59.63    59.82
   800x600       75.00    70.00    65.00    60.00    72.19    75.00    60.32    56.25
   840x525       60.01    59.88
   864x486       59.92    59.57
   700x525       74.76    59.98
   800x450       59.95    59.82
   720x480       60.00    59.94
   640x512       75.02    60.02
   700x450       59.96    59.88
   640x480       60.00    75.00    72.81    75.00    66.67    60.00    59.95    59.94
   720x405       59.51    58.99
   720x400       70.08
   684x384       59.88    59.85
   640x400       59.88    59.98
   576x432       75.00
   640x360       59.86    59.83    59.84    59.32
   512x384       75.03    70.07    60.00
   512x288       60.00    59.92
   416x312       74.66
   480x270       59.63    59.82
   400x300       72.19    75.12    60.32    56.34
   432x243       59.92    59.57
   320x240       72.81    75.00    60.05
   360x202       59.51    59.13
   320x180       59.84    59.32

My `/var/log/Xorg.0.log` attached separately: https://pastebin.com/e6W5LKqn

What I tried and what I noticed (might help somehow to solve the problem):
- Tried changing resolutions on both monitors to put different hertzones, the result is that at unacceptable parameters for the monitor it "shut down" as if there was no signal from the PC. At all acceptable parameters just black screen and indication that the monitor works.
- I tried to change the monitor outputs and its settings through physical buttons on it, but the screen does not light up, modes do not change. It's very strange when plugged in, it just ignores button presses, never noticed this before.
- Disabling and enabling the monitor both while the system is running, and before or after its startup did not give any results. I tried disconnecting it both with buttons and by pulling out the wire.
- Changing the "main" monitor.

When physically disconnecting the monitor, I get this error in the log:

desktop-pc kernel: i2c i2c-8: sendbytes: NAK bailout.
desktop-pc kernel: nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1

To be honest I'm confused, I don't even know which way to dig, there are no errors, I haven't found similar topics on forums, the driver seems to be working as it should. I have studied these resources, but there is no help:
- https://wiki.archlinux.org/title/Nouveau
- https://wiki.archlinux.org/title/Multihead#RandR
- https://wiki.archlinux.org/title/Xrandr#Configuration

Last edited by Konstantin1722 (2023-08-01 10:58:24)

seth · 2023-07-28 20:03:23

   1920x1080i    60.00*+  60.00    59.94

Did you try to set it to a non-interlaced mode?

xrandr --HDMI-1 --mode 1920x1080

GF108 … nouveau

Did you consider https://aur.archlinux.org/packages/nvidia-390xx-dkms/ ?

Konstantin1722 · 2023-07-31 07:58:24

seth wrote:

   1920x1080i    60.00*+  60.00    59.94
Did you try to set it to a non-interlaced mode?
xrandr --HDMI-1 --mode 1920x1080
GF108 … nouveau
Did you consider https://aur.archlinux.org/packages/nvidia-390xx-dkms/ ?

Hi. Thank you very much for your response. At this point I want to rule out the possibility of a hardware problem. I have connected both monitors via DVI and VGA and they work....

There could be a problem with the video card. I'm going to test this and report back here later.

Konstantin1722 · 2023-08-01 10:57:16

Konstantin1722 wrote:

Hi. Thank you very much for your response. At this point I want to rule out the possibility of a hardware problem. I have connected both monitors via DVI and VGA and they work....
There could be a problem with the video card. I'm going to test this and report back here later.

As a result, it turned out to be a physical malfunction of the system board. Topic closed.

seth · 2023-08-01 11:56:01

Mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Arch Linux

#1 2023-07-28 08:02:45

Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

#2 2023-07-28 20:03:23

Re: Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

#3 2023-07-31 07:58:24

Re: Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

#4 2023-08-01 10:57:16

Re: Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

#5 2023-08-01 11:56:01

Re: Second monitor stopped working in sddm and xorg after upgrade [SOLVED]

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