I was just hit by this one as well. For me, this was triggered by watching the Dr. WHO preview on this page, and clicking the fullscreen option. http://weblog.fok.nl/viewSingleItem/35203/Doctor-Who%3A-een-voorproefje.htm
The screen froze, but the system kept operating as usual. I used ctrl+alt+f1 to open a terminal to investigate the problem and trigger a reboot. I was also able to switch back and forth to the (still frozen) x session. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/743408 Title: [sandybridge-gt1] GPU lockup (IPEHR: 0x02000004) -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
