https://bugs.kde.org/show_bug.cgi?id=481520
Bug ID: 481520 Summary: Screens stays black after unlocking if monitors were switched off while locked (Wayland) Classification: Plasma Product: kwin Version: 5.93.0 Platform: Gentoo Packages OS: Linux Status: REPORTED Severity: major Priority: NOR Component: general Assignee: kwin-bugs-n...@kde.org Reporter: guido-kdeb...@unknownsite.de Target Milestone: --- SUMMARY *** When switching off all connected monitors (all DisplayPort) on Plasma (Wayland) while the screen is locked, then switching them back on later and unlocking the screen, all screens will go black apart from the mouse cursor and stay black. Sometimes the desktop is actually visible for a split second before it goes black. The only way I found to get a desktop back at all is to switch to a different VT and kill plasma from the command line. I have chosen the severity categorization "major" for this, as it can seriously hamper the use of the system as a whole if you're not expecting this, including data loss. My current workaround for this problem is to leave my monitors on when I walk away from my computer for a while. Needless to say, I don't like wasting energy like that. Another workaround would be, of course, to save everything and log out before walking away, but there are often reason for not wanting or being unable to do that. *** STEPS TO REPRODUCE 1. Lock the screen 2. Switch off all connected monitors. (Depending on your monitor and type of connection, you may need to physically disconnect them from the graphics port. In my case, just switching them off is enough.) 3. (Optional) Walk away and do something else for a while 4. Switch all monitors on again 5. Unlock the session by entering the current user's password on the lock screen OBSERVED RESULT All connected monitors show a black screen. Sometimes they show the actual session for a split second before that happens. The mouse cursor is still visible and can still be moved. EXPECTED RESULT The screens should show the session as it was before the screen was first locked. SOFTWARE/OS VERSIONS Windows: n/a macOS: n/a Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.93.0 KDE Frameworks Version: 5.249.0 Qt Version: 6.6.1 ADDITIONAL INFORMATION This is when running on Wayland. I have not tried on X11. -- You are receiving this mail because: You are watching all bug changes.