This morning I could not get my computer to wake up. The monitor would not light up and so there was no known activity with the mouse or keyboard. I tried to logout/ shutdown via the power button but that would not work either. So I hard crashed it via power off.
Also possibly unrelated I some times get various "panic" messages where my pc returns to counsel but seems to crash in the process. So that the only option is to power off. I am almost certain any error info that would be useful for diagnosis would be in /var/log for the specified time and date. Is that correct?
Regards