Thankfully I've never had that happen, but if it did I would probably just switch to a tty & use the killall command on whatever was giving me bother....
Switch to a different virtual terminal (ctrl-alt-F3), login and restart desktop manager, switch back to the normal GUI terminal (ctrl-alt-F2)
I only use htop to kill process when it froze.
I just use xkill for that....
A question, what tod do when the laptop is completely frozen, as in you can't even move your mouse. Is the only solution to force shutdown?
You can try the Magic SysRq key, if its enabled.
https://en.m.wikipedia.org/wiki/Magic_SysRq_key
https://wiki.archlinux.org/title/Keyboard_shortcuts
Thankfully I've never had that happen, but if it did I would probably just switch to a tty & use the killall command on whatever was giving me bother....
Switch to a different virtual terminal (ctrl-alt-F3), login and restart desktop manager, switch back to the normal GUI terminal (ctrl-alt-F2)