Re: [Trisquel-users] Keyboard applet freezes the system

[mikko . viinamaki]

Ctrl-Alt-BkSpace isn't enabled by default. It's buried deep in the keyboard  
layout settings, I've attached a screenshot from 5.5.

And if that is enabled and doesn't work, you really should try the magic  
sysrq before poweroff.
https://en.wikipedia.org/wiki/Magic_sysrq