Three weeks ago I switched from Debian Buster to the latest Stable called Bullseye. On Buster I never had this issue. I suspected many things but after uinstalling and installing KDE-Connect multiple times using different Nvidia/Nouvea drivers I came to the conclusion it is most likely a KDE-Connect problem. These are four scenarios: 1) Logging out from GUI is instant. If I restart/shutdown then it will most likely be instant as well. 2) Restarting from GUI takes 9 seconds with a black screen and moveable cursor. 3) Shut Down from GUI has the same outcome as Restart. 4) Restarting/Shutdown via the terminal is instant. This issue appears on Debian's Stable, Testing, and Unstable versions. Again, this issue was never around on Buster (old-stable) Operating System: Debian GNU/Linux KDE Plasma Version: 5.21.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Kernel Version: 5.14.0-1-amd64 OS Type: 64-bit Graphics Platform: X11
*** This bug has been marked as a duplicate of bug 432643 ***