Monitor restarts constantly

astyorii · 2026-04-26 20:28:02

Hello,
I have a problem with one of my monitors, one of them don't crash and just works but my second monitor keeps restarting at times and i don't know what can be root of this. I think it's either kernel or amd drivers because i have tested my pc on debian and it worked flawlessly. I distrohopped a lot and i know that if on gentoo i typed this command "echo "high" > /sys/class/drm/card1/device/power_dpm_force_performance_level" it made crashes a lot less frequent.
dmesg -> https://pastebin.com/gEugna8Z

Last edited by astyorii (2026-04-26 20:46:23)

seth · 2026-04-27 17:46:32

Is this on the console or some GUI? Which (notably whether X11 or wayland and in the latter case what exact compositor)

The dmesg has only the first 15s and then after 22 minutes some lshw - did the monitor "crash/restart" during this time?
What modeline does it run?

xrandr -q

Ideally also provide

for OUT in /sys/class/drm/card*; do echo $OUT; edid-decode $OUT/edid; echo "================="; done

You'll need https://archlinux.org/packages/extra/x86_64/v4l-utils/

if on gentoo i typed this command "echo "high" > /sys/class/drm/card1/device/power_dpm_force_performance_level" it made crashes a lot less frequent.

https://wiki.archlinux.org/title/AMDGPU … cy_problem

astyorii · 2026-04-27 20:41:35

i use X11 (xfce), the lshw 22 minutes later is in here because i tried to run lshw but i didn't had it installed, then i installed it and then worked fine.

here is xrandr -q output : https://pastebin.com/BiKhi52G (HDMI-1 is working one HDMI-2 is the monitor that crashes)

that second command: https://pastebin.com/aHs6u5Vm

v4l-utils i have already installed

i will try adding radeon.dpm=0 to my grub_default

I forgot to add that those crashes accur only while i use somekind of gui, no matter is it x11 or wayland, desktop environment or just window manager. Shell can be open for as long as i want and it won't crash but as soon as i start any gui it starts crashing.

Last edited by astyorii (2026-04-27 21:20:42)

seth · 2026-04-27 21:30:18

HDMI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
   1920x1080    144.00*+ 120.00   119.88    59.97    59.96    60.00    50.00    59.94    59.93  
HDMI-2 connected primary 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
   2560x1440     59.95 + 143.99*  120.00

The struggling is the 1440p144 one?

Are the outputs stable at 120Hz?

astyorii · 2026-04-28 13:28:04

yes, the 1440p and no i tried running 120hz for a bit and it still crashes

Last edited by astyorii (2026-04-28 15:12:01)

seth · 2026-04-28 16:07:28

And at 1080p60 ? 1440p60 ?
Either the cable or crtc/power is insufficient for the signal or something's just turning off the output - the latter would be invariant against lower signal demands.

astyorii · 2026-04-28 19:26:16

1440p60 seems to work fine

seth · 2026-04-28 19:30:10

because i have tested my pc on debian and it worked flawlessly

Did you confirm that was at 1440p144 ?

Do you have another cable to rule that out?

astyorii · 2026-04-28 19:41:19

I did confirmed that because my monitor as default sets itself at 60hz and after changing it to 144hz i didn't experience crashes, in fact from various distros i tested the only that didn't crashed was debian and artix stable but after updating everything artix also broke
well i could try swaping cables with my second monitor but i would have to test that tomorrow because i don't have much time today

seth · 2026-04-28 19:52:34

ass·u·me-ing it's not the cable (famous last words…) and the "high" performance level doesn't help (?)
1. what power profiles do you have available, https://wiki.archlinux.org/title/AMDGPU#Power_profiles
2. what if you choose one that sounds like it's gonna burn a lot of Watts?

Does it help to add "amdgpu.dcdebugmask=0x812" to the https://wiki.archlinux.org/title/Kernel_parameters ?

astyorii · 2026-04-28 20:08:33

1. https://pastebin.com/FG0TyhC7
2. sure, just i don't know which one i should pick, i have a hard time reading those profiles
3. gonna try that right now

seth · 2026-04-28 20:18:35

Try 1 or 7 (fullscreen/window 3D)

astyorii · 2026-04-28 20:47:50

Well the power profile 1 did nothing but high performance level helps it seems, instead writing command by my own i used radcard (https://github.com/superjamie/snippets/ … sh/radcard) i changed it accordingly to my setup and after using ./radcard set performance and ./radcard set high it seems to stop crashing or at least for longer periods stops them

Last edited by astyorii (2026-04-28 20:48:33)

Arch Linux

#1 2026-04-26 20:28:02

Monitor restarts constantly

#2 2026-04-27 17:46:32

Re: Monitor restarts constantly

#3 2026-04-27 20:41:35

Re: Monitor restarts constantly

#4 2026-04-27 21:30:18

Re: Monitor restarts constantly

#5 2026-04-28 13:28:04

Re: Monitor restarts constantly

#6 2026-04-28 16:07:28

Re: Monitor restarts constantly

#7 2026-04-28 19:26:16

Re: Monitor restarts constantly

#8 2026-04-28 19:30:10

Re: Monitor restarts constantly

#9 2026-04-28 19:41:19

Re: Monitor restarts constantly

#10 2026-04-28 19:52:34

Re: Monitor restarts constantly

#11 2026-04-28 20:08:33

Re: Monitor restarts constantly

#12 2026-04-28 20:18:35

Re: Monitor restarts constantly

#13 2026-04-28 20:47:50

Re: Monitor restarts constantly

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