On 28/01/2019 18.18, Paul Sutton wrote:
On 1/27/19 12:11 PM, BELAHCENE Abdelkader wrote:Sometimes (maybe often) when I leave the system for a times without touching it, when I come back, the system is frozen , juste the pointer of mouse can move, but nothing else, keyboard doesn't respond, even ctrl+alt+F1 , or F2, ... So the only thing todo is stop button.Holding alt-sysrq (print screen key usually) and then typing RSEIUB may also restart the system but cleanly as in unmounting file systems etc.
Unfortunately in this case the keyboard is not responding, so RSEISUB (boots and braces) probably won't help. (It's a good thing to try though.)
-- John