Display port stopped working

Graphics / Linux Linux
1

Hello,
I’ve been using the GeForce GTX 1650 GPU for two years on my desktop without any issues. I’m using 2 monitors, one of which is connected to a Display Port, while the other – to a HDMI port. Suddenly, a couple days ago I turned the computer on in the morning and it crashed during boot, spilling a lot of errors and mem dumps on the screen. I DID NOT perform any system updates or install any new software on the day before. After a reboot the system started as if nothing happened, but ever since only the monitor connected through HDMI is working, while Display Ports are not. It seems that the monitor on DP is not detected at all. I tried switching monitors – both are working fine, but only when connected to the HDMI port.

OS: Arch Linux

My setup:
$ uname -a
Linux sventimir 6.6.9-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 02 Jan 2024 02:28:28 +0000 x86_64 GNU/Linux

$ lspci | grep GeForce
01:00.0 VGA compatible controller: NVIDIA Corporation TU117 [GeForce GTX 1650] (rev a1)

$ lsmod | grep nvidia
nvidia_drm 118784 12
nvidia_modeset 1585152 14 nvidia_drm
nvidia_uvm 3506176 0
nvidia 62390272 272 nvidia_uvm,nvidia_modeset
video 77824 1 nvidia_modeset

$ xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP-0 disconnected primary (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
1920x1080 60.00*+
1680x1050 59.95
1440x900 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
None-1-1 connected (normal left inverted right x axis y axis)
1920x1080 60.00 +

In Xorg log I can see messages appearing when I connect and disconnect the HDMI monitor, but no events on connecting/disconnecting to any of the DP ports. This None-1-1 display shown by xrandr is suspcious. I think it wasn’t there before the accident, but I’m not sure. Whenever I try to enable it, I get the following error:

$ xrandr --output None-1-1 --auto
xrandr: Configure crtc 4 failed

nvidia-bug-report.log.gz (270.3 KB)

2

simpledrm seems to be enabled, please set kernel parameter nvidia-drm.modeset=1 to try to disable it.

4

I set nvidia_drm modeset=1 and fbdev=1. It didn’t help. Specifically I put:

options nvidia_drm modeset=1 fbdev=1

in /etc/modprobe.d/nvidia.conf file and rebooted.

$ modprobe -c | grep nvidia_drm
options nvidia_drm modeset=1 fbdev=1
alias pci:v000010DEd*sv*sd*bc03sc00i00* nvidia_drm
alias pci:v000010DEd*sv*sd*bc03sc02i00* nvidia_drm
alias pci:v000010DEd*sv*sd*bc06sc80i00* nvidia_drm

The issue still persist.

I wonder if that crashed reboot did not damage the hardware… Is that possible?

5

Please don’t set fbdev=1, it’s experimental and known to cause issues.
Please create a new nvidia-bug-report.log.

6

After disabling fbdev it’s still the same. The bug report attached.
nvidia-bug-report.log.gz (342.6 KB)

7

Please really set nvidia-drm.modeset=1 on kernel cmdline, not as module option, so that simpledrm can catch it and disable.

8

Like that:

$ sudo modprobe nvidia-drm modeset=1

? I did it. Doesn’t seem to make a difference either.
nvidia-bug-report.log.gz (624.0 KB)

9

No, like that:
https://wiki.archlinux.org/title/kernel_parameters
so that it’s visible in cat /proc/cmdline after boot.

10

Done. The monitor still does not work, but the None-1-1output has disappeared from xrandr’s output. All Display Ports still seem to be disconnected, though.

$ cat /proc/cmdline
initrd=\initramfs-linux.img initrd=\initramfs-linux-fallback.img root=UUID=9a4d91ad-6ef2-4aef-bf21-38cb17031792 rw ibt=off nvidia-drm.modeset=1

nvidia-bug-report.log.gz (345.8 KB)

11

Maybe the DP lead is faulty, try another lead.

12

I second that. Simpledrm is successfully disabled now so the ghost graphics is gone.

13

Indeed, apparently the plug was faulty. When connected with another wire, both monitors work as they did before. Thanks a lot for your time and patience!