Sometimes, Endeavour OS stops opening new applications

[Pudge]

@Triby

Please, avoid to do this, as it can cause issues. Instead, press Ctrl+Alt+F2 to get into TTY, login as root and try systemctl poweroff to shut down, or systemctl reboot to reboot.

Good advice. Do what @Triby suggested first, but if that doesn’t work try @Kresimir 's Magic Carpet ride…I mean Magic SysRq Key (REISUB)

[Tip] Enable Magic SysRq Key (REISUB)

The Linux kernel authors have provided a very nice feature of issuing low-level commands to the kernel directly, regardless of the state the system is in. This is called the “Magic SysRq Key”, because these commands are issued by pressing the SysRq key on the keyboard (if you can’t find it, typically, it shares the same physical key as the Print Screen key, but on some laptops it can be elsewhere). A common use is to reboot when the computer freezes and becomes unresponsive due to some software…

You need to ENABLE REISUB BEFORE you need it.

Pudge