SUMMARY Pressing "Ctrl+Alt+F7" causes the lock screen to appear. However, the screen is completely frozen and no key seems to do anything. Interestingly the mouse still moves around. The only way to get the system running again is to force a reboot by holding the power button. STEPS TO REPRODUCE 1. Press ctrl+Alt+f7 2. enjoy SOFTWARE/OS VERSIONS Operating System: Debian GNU/Linux 12 KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 Kernel Version: 6.1.0-15-amd64 (64-bit) Graphics Platform: Wayland
You've succeeded in switching virtual terminals. :) Evidently On Debian, number 7 (for F7) is where the SDDM login screen lives, so you've switched to that one. I remember the first time I did this by accident, panicked, and thought I'd hit a bug or gotten hacked! Not to worry, it's totally normal. You can switch back to the virtual terminal containing your user session by hitting Ctrl+Alt+F1, and if that doesn't work, try Ctrl+Alt+F2, then F3, and so on until you find the one that Debian has assigned to your user session.