https://bugs.kde.org/show_bug.cgi?id=477738
--- Comment #47 from jordandi...@tuta.com ---
I was able to find a work around and made an alias for it.
```bash
killall kwin_wayland && killall kwin_wayland_wrapper && startplasma-wayland
```
This seems to restart the session and allow me to get back into kde without
having to reboot the entire system.(In reply to Ethan Nguyen from comment #0)
> SUMMARY
> After I suspend to RAM and resume, my KDE setup (Wayland, Nvidia 1060, using
> the nvidia driver, on Arch Linux) leaves me with a black screen and a
> working cursor that changes when I hover over a textbox (but I can't see the
> textbox) on the lockscreen.
>
> I see this in the system journal right after I resume from RAM:
>
> ```
> kwin_wayland[1399]: kwin_wayland_drm: Atomic commit failed! Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Presentation failed! Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Atomic commit failed! Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Presentation failed! Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Atomic modeset commit failed!
> Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Setting dpms mode failed!
> kwin_wayland[1399]: kwin_wayland_drm: Atomic modeset commit failed!
> Permission denied
> kwin_wayland[1399]: kwin_wayland_drm: Setting dpms mode failed!
> kwin_wayland[1399]: kwin_core: Could not find window with uuid
> "{38667f04-f9ad-4cc3-958b-f8d804def467}"
> kwin_wayland[1399]: kwin_core: Could not find window with uuid
> "{38667f04-f9ad-4cc3-958b-f8d804def467}"
> kwin_wayland[1399]: kwin_core: Could not find window with uuid
> "{38667f04-f9ad-4cc3-958b-f8d804def467}"
> kwin_wayland[1399]: kwin_core: Could not find window with uuid
> "{38667f04-f9ad-4cc3-958b-f8d804def467}"
> ```
>
> and then lots of these lines, filling up my journal until I reboot
>
> ```
> kwin_core: Applying KScreen config failed!
> ```
>
> I can't seem to find a way to recover from this other than to reboot, which
> is, of course, extremely disruptive.
>
> STEPS TO REPRODUCE
> 1. Put the computer to sleep (i.e. suspend to RAM)
> 2. Wake it back up
>
> OBSERVED RESULT
> Black screen -- no lock screen displayed, but I can still move my mouse
> cursor around and see it respond to the presence of a text box
>
> EXPECTED RESULT
> I should be able to see my lock screen.
>
> SOFTWARE/OS VERSIONS
> Linux/KDE Plasma: Arch Linux, latest packages
> (available in About System)
> KDE Plasma Version: 5.27.9
> KDE Frameworks Version: 5.112.0
> Qt Version: 5.15.11
>
> ADDITIONAL INFORMATION
> My hardware (Nvidia 1060, nvidia proprietary driver) is probably relevant?
> Not quite sure how to attach bugtraces, but I can if needed. Thank you!
I was able to find a work around and made an alias for it.
killall kwin_wayland && killall kwin_wayland_wrapper && startplasma-wayland
This seems to restart the session and allow me to get back into kde without
having to reboot the entire system. As previously mentioned, just make an alias
for it and you can run this command in a seperate tty. Let me know if this
workaround helps.
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