Bug 446592

SUMMARY
Hey there, 
I have two 4k displays connected via Displayport, one is rotated by 90 degrees, the other one is my main display. 
It happens more often than not that when both screen were off, the lockscreen activates and the displays are being turned on again, the lockscreen shows correctly on the left one, but is offset on the right one, with only about one quarter showing the lockscreen (its offset to the top left, so that in the top left corner the bottom right part of the lockscreen is visible). I can unlock it normally and the actual workspace is shown normally. I'm using X11. 


STEPS TO REPRODUCE
1. Turn off via DP connected displays
2. Wait for lockscreen to turn on
3. Observe

OBSERVED RESULT
The lockscreen is offset

EXPECTED RESULT
The lockscreen is shown normally

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Kubuntu 21.10
(available in About System)
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Should any additional information or logs be required, I'd be happy to help!