My 12.04 system crashes hard for no apparent reason. The screen locks, the mouse and keyboard both become unresponsive and all I can do is pull the power lead and restart. I cannot CTRL+ALT+F1 to get to a terminal and do anything there. Where do I start to diagnose the issue?
It seems the case that it happens only when using Chrome, but given that I am most often using Chrome (as opposed to some other application), this could be just a coincidence and Chrome is not to blame.
I've looked in the Log File Viewer but don't know which log(s) to concentrate on.
Chrome version: Version 31.0.1650.57
Output of uname -a :
Linux cooler-master 3.2.0-56-generic-pae #86-Ubuntu SMP Wed Oct 23 17:51:27 UTC 2013 i686 i686 i386 GNU/Linux
EDIT: please see log file at /var/log/syslog at this Pastebin link.
FURTHER EDIT: I can see that a crash report was uploaded to Google (I enabled crash reporting before the latest crash) in ~/.config/google-chrome/Crash Reports. The problem I have is that the crash doesn't simply render Chrome unusable, it takes down the whole system. The screen doesn't refresh (for example the clock display in the top right of the screen doesn't advance), the keyboard and mouse are unusable and I cannot get to the terminal. Does anyone else have this issue?