Main monitor doesn't turn on after screen energy saving turns it off

HardDiskUsage · 2023-01-21 21:38:37

Hello,

I updated my system today and i went afk and my monitors turned off, and when i came back the login screen SDDM was working fine on both monitors,
but after logged in only my second monitor (dp-1) was working and my main monitor(dp-0) was not turning on.

I checked my nvidia-settings > display configuration and it was saying my main monitor was off.
I tried turning it on by changing the resolution from 'off' to its defualt and applying it, but it did not wake up my main monitor.
I tried unplugging and pluggin back my both monitors and that did not work either.

I am not sure which logs to attatch, but here is my system info.

OS: Arch Linux x86_64
Kernel: 6.1.7-arch1-1
DE: Plasma 5.26.5
WM: KWin
NVIDIA Driver Version: 525.85.05

The workaround i found was

cd ~/.local/share/kscreen/
and delete all display config files in the folder and
cd ~/.local/share/kscreen/outputs
and delete all display config files in the folder
and reboot and it was fixed.
And I disabled Screen energy saving in Energy Saving settings page.

seth · 2023-01-22 08:32:36

cd ~/.local/share/kscreen/
and delete all display config files in the folder and
cd ~/.local/share/kscreen/outputs
and delete all display config files in the folder
and reboot and it was fixed.

Next time this happens (iff) please post the output of "xrandr -q", then try "xrandr --output DP-0 --auto" (make sure the output name fits) and dump "xrandr -q" again; then "xset dpms force off; sleep 1; xset dpms force on"
What likely happens is that the DPMS causes the output to unregister and kscreen seeing that as opportunity to remove it.
You can test this w/ "xset dpms off" and waiting a couple of seconds before juggling your mouse.

And I disabled Screen energy saving in Energy Saving settings page.

Greta does not approve.

HardDiskUsage · 2023-01-22 14:57:28

Thank you, I will try generate the logs and upload them soon as i get some free time.

I am suspecting this issue is also related to my other issue i am having, which is all my widgets moves (shifted down) around on restart, but at first they load fine, but few seconds later they move around. I am not sure which startup script is cuasing this and i was experiencing this issue before the system update.

My main monitor and second monitors run in different resolutions and they are in a stacked monitor layout, i wonder if this plays a role in the issue.

seth · 2023-01-22 15:01:30

You could try to simply disable the kscreen daemon in "kcmshell5 kded".

HardDiskUsage · 2023-01-23 03:48:36

I disabled KScreen 2 and rebooted and the my main monitor resolution was set to lower resolution than the originally one i set and so the widget were scaled big and did not have enough room take original position and so it was moved around.

Then I went back to settings and started kscreens and it switched to the original resolution and the widget scaled down and went to their original positions.

When i disabled KScreen 2 should it have atleast kept the original resolution i set? am i setting the resolution wrong?

Last edited by HardDiskUsage (2023-01-23 03:48:56)

seth · 2023-01-23 07:27:23

Please post the output of

xrandr -q

and your xorg log, https://wiki.archlinux.org/title/Xorg#General

HardDiskUsage · 2023-01-26 03:14:37

Sorry for late reply.

I ended fixing it, I did few steps not sure which fixed it, but it was a DPI issue essentially.

I was checking the HiDPI wiki page and with

 xdpyinfo | grep -B2 resolution

I found out that was my DPI was set wrong (much lower) and i did some searching and turns out it was using my second monitors DPI, and also that running two monitor with different dpi is tricky.

What I ended up doing was:

1. deleted all display configs from ~/.local/share/kscreen/ (not sure if this is necessary)
2. shutdown
3. unplug my second montor
4. log in, open up nvidia-settings and set my resolution and refresh rate and checked force full composition pipeline
5. after that also clicked "Save to X Configuration File"
6. Set up the widgets
7. rebooted and my widgets were in place and i checked my DPI and was set correctly.
8. then i plugged in my second monitor and in nvidia-settings only setup the resolution and position DID NOT saved to X config file.
9. rebooted and everything was in placed and dpi was set properly still.

Last edited by HardDiskUsage (2023-01-26 03:17:04)

seth · 2023-01-26 08:25:40

5. after that also clicked "Save to X Configuration File"

You now have a static and somewhat bogus server layout.
You want to get rid of that and in doubt override the server DPI w/ something like
/etc/X11/xorg.conf.d/20-nvidia.conf

Section "Device"
    Identifier  "Default nvidia Device"
    Driver      "nvidia"
    Option      "DPI"            "123x123" # use the actually desired DPI, probably 96 or 144
    Option      "UseEdidDpi"     "False"
EndSection

HardDiskUsage · 2023-01-27 00:46:04

I removed the /etc/X11/xorg.conf and added /etc/X11/xorg.conf.d/20-nvidia.conf with my main montior DPI and rebooted and it works.

I tested it just to make sure by removing /etc/X11/xorg.conf.d/20-nvidia.conf and rebooting and sure enought it moved the widgets.

Thank you so much!

seth · 2023-01-27 08:16:51

\o/

Please always remember to 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 2023-01-21 21:38:37

Main monitor doesn't turn on after screen energy saving turns it off

#2 2023-01-22 08:32:36

Re: Main monitor doesn't turn on after screen energy saving turns it off

#3 2023-01-22 14:57:28

Re: Main monitor doesn't turn on after screen energy saving turns it off

#4 2023-01-22 15:01:30

Re: Main monitor doesn't turn on after screen energy saving turns it off

#5 2023-01-23 03:48:36

Re: Main monitor doesn't turn on after screen energy saving turns it off

#6 2023-01-23 07:27:23

Re: Main monitor doesn't turn on after screen energy saving turns it off

#7 2023-01-26 03:14:37

Re: Main monitor doesn't turn on after screen energy saving turns it off

#8 2023-01-26 08:25:40

Re: Main monitor doesn't turn on after screen energy saving turns it off

#9 2023-01-27 00:46:04

Re: Main monitor doesn't turn on after screen energy saving turns it off

#10 2023-01-27 08:16:51

Re: Main monitor doesn't turn on after screen energy saving turns it off

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