SUMMARY Sometimes, after a suspend the lockscreen is not there, just a black screen with a working cursor is displayed. Login is not possible, as no text field or buttons are displayed. Unlocking via "loginctl unlock-sessions" is also not possible. (So **NOT A DUPLICATE** of #457284) This actually happens to me on two different machines. I'm pretty sure that it started with Plasma 5.26.3 STEPS TO REPRODUCE 1. suspend the laptop OBSERVED RESULT A black screen is displayed, with a movable cursor. EXPECTED RESULT The normal lockscreen should be displayed, login should be possible. Operating System: Arch Linux KDE Plasma Version: 5.26.3 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.7 Kernel Version: 6.0.8-arch1-1 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz Memory: 15,4 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 Manufacturer: LENOVO Product Name: 20QGS00A00 System Version: ThinkPad X1 Yoga 4th
Some more details: Restarting via "plasmashell --replace" is not possible, and restarting the display/login manager (sddm) also brings no success. plasmashell seems to be a defunct process when this happens, so I am not sure if its a kwin bug or sddm or …
It seems to be a bug in the linux Kernel as it does not happen with the LTS kernel, so I'll close it.