[Bug 1849084] Re: Freeze on system-resume caused by kwin and amdgpu driver

[khitschler]

@Richard:

I tried your suggestion without luck. The screen remains black, the
backlight was switched on. To verify I tried multiple times.

The only true workaround (with KDE) is to switch the compositor off
before turning into sleep. You have to switch the compositor on after
return from suspend. Somewhere I've found a systemctl script to manage
this automatically, but I experienced the script's working not reliable.

With KDE you have to press Shift-Alt-F12 to toggle manually the
compositor's state.

This is the output after returning from suspend with compositor switched
off:

klaus at Lin:~$ sudo systemctl status plasma-restart@$USER.service
● plasma-restart at klaus.service - Plasma Restart Service
   Loaded: loaded (/etc/systemd/system/plasma-restart at .service; indirect; vendor preset: enabled)
   Active: inactive (dead)

Mai 03 16:20:59 Lin systemd[1]: plasma-restart at klaus.service: Unit not needed anymore. Stopping.
Mai 03 16:20:59 Lin systemd[1]: plasma-restart at klaus.service: Failed to enqueue stop job, ignoring: Transaction is destructive.
Mai 03 16:20:59 Lin systemd[1]: Starting Plasma Restart Service...
Mai 03 16:20:59 Lin sudo[3652]:    klaus : TTY=unknown ; PWD=/home/klaus ; USER=klaus ; COMMAND=/bin/bash -c pkill -ABRT plasmashell
Mai 03 16:20:59 Lin sudo[3652]: pam_unix(sudo:session): session opened for user klaus by (uid=0)
Mai 03 16:20:59 Lin sudo[3652]: pam_unix(sudo:session): session closed for user klaus
Mai 03 16:20:59 Lin systemd[1]: Started Plasma Restart Service.
Mai 03 16:20:59 Lin systemd[1]: plasma-restart at klaus.service: Unit not needed anymore. Stopping.
Mai 03 16:20:59 Lin systemd[1]: Stopped Plasma Restart Service.

Something seems to be wrong, but I'm not the specialist for systemctl
scripts.

Regards, Klaus

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Title:
  Freeze on system-resume caused by kwin and amdgpu driver

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