SUMMARY System does not go back up after a screen turns off. STEPS TO REPRODUCE 1. Log out. 2. Wait for a screen to turn off. 3. Move a mouse or type any key on a keyboard. OBSERVED RESULT Black screen, monitor shows a message: "No Signal." EXPECTED RESULT System goes back online as it should after a mouse/keyboard activity. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 6.13.5 KDE Plasma Version: 6.3.2 KDE Frameworks Version: 6.11.0 Qt Version: 6.8.2 ADDITIONAL INFORMATION
Sometimes, when the monitor's energy saving is activated, the screen no longer responds to mouse or keyboard actions. Only disconnecting the computer from the network helps. Not often, but sometimes I encounter this.
(In reply to gigastarcraft2 from comment #0) > SUMMARY > System does not go back up after a screen turns off. > > STEPS TO REPRODUCE > 1. Log out. > 2. Wait for a screen to turn off. > 3. Move a mouse or type any key on a keyboard. > > OBSERVED RESULT > Black screen, monitor shows a message: "No Signal." After trying to figure it out, I managed to fix it after deleting the maliit-keyboard package and the file /etc/sddm.conf.d/plasma-wayland.conf. If the system uses only a wayland session, then there are no crashes or black screen issues at all after exiting the session. But if the system uses a wayland session and an x11 session, then when exiting the session, it happens that instead of the login screen, there is just a black screen. The problems started after the release of plasma-6.3.x. After deleting maliit-keyboard and maliit, as well as the file /etc/sddm.conf.d/plasma-wayland.conf, I no longer see a black screen after exiting the session.
Hi - just to check, is this issue happening at the SDDM screen, where you're sent immediately after logging out and where you'd choose which user to log in as next? I'm double-checking that it's related to that screen, and not the "lockscreen" that's used when you haven't actually logged out of your user session, but either enough time has passed or you've manually locked your device. Thanks!
(In reply to John Kizer from comment #3) > Hi - just to check, is this issue happening at the SDDM screen, where you're > sent immediately after logging out and where you'd choose which user to log > in as next? Yes, exactly on the SDDM screen, immediately after logging out. In my case, there is also nvidia-570. But it seems the error was fixed with the latest commits in https://invent.kde.org/plasma/kwin. I don't encounter this error anymore. At first I switched completely to wayland and did not receive this error, since it only appeared for me if two sessions were available, wayland and x11. Recently, I installed the package again for testing, which contains files /usr/bin/startplasma-x11 and /usr/share/xsessions/plasmax11.desktop. But I was never able to recreate the error again. The black screen never appeared.
Glad it's working for you now!