This is using plasma-workspace-wayland 4:5.12.4-0ubuntu3 When using a X session I can power cycle the monitor and everything works. With a wayland session the monitor says there is no signal once it is turned back on. I can switch to a virtual terminal (C-A-Fx) and doing so brings the monitor to life. Trying to switch back to wayland (C-A-F1) drops the signal again. The monitor is a dell up3216q The video card is a intel 5927.
I experienced similar issues in the past with some monitor models. Pls also add here the info from a call to: qdbus org.kde.KWin /KWin supportInformation
Created attachment 112453 [details] info when running x11
Created attachment 112454 [details] info when running wayland
By turn-off i believe you meant when system turns off monitor after 5min of inactivity? If so, i have a similar issue, but on opensuse tw i couldn't even activate tty. Reported the issue here: https://bugzilla.opensuse.org/show_bug.cgi?id=1096816 And here is the journal extract for relevant period: https://bugzilla.opensuse.org/attachment.cgi?id=776295 Just guessing here, but could here also be problem with sddm? I could remotely shutdown the pc since sshd was working, but during shutdown it says "shutting down sddm" and then waits for timeout.
Btw can you check from the virtual terminal if the KWin process is still running and get a trace of the last calls it did.
(In reply to Roman Gilg from comment #5) > Btw can you check from the virtual terminal if the KWin process is still > running and get a trace of the last calls it did. i opened a new bug since description when it happens is a bit different https://bugs.kde.org/show_bug.cgi?id=396272 backtrace is attached there
Hello, is this issue still reproducible for you on current Plasma? I didn't manage to reproduce this. I tried manually turning my external monitor off and on, although I lack the same hardware.
(In reply to Thiago Sueto from comment #7) > Hello, is this issue still reproducible for you on current Plasma? > I didn't manage to reproduce this. > I tried manually turning my external monitor off and on, although I lack the > same hardware. I am sorry, I no longer have that particular hardware to try to reproduce this issue.
Please report if it's still an issue on newer Plasma