I had the problem right after updating (not upgrading) on Saturday using 12.04.
I was able to control it by logging into 2D and immediately opening the System Monitor and shutting down the three instances of Ubuntu One (login, synch and launch), because the machine would freeze upon login to Ubuntu One. I then had to shut down zeitgeist-fts, because that would start eating up resourced (upto 300mb of memory at one point). At that point, I just decided to reinstall into 12.10. I did that and it worked fine for an hour, so I started transfering over my backed up files and logged into Ubuntu One while running the updates. The problems began immediately, including resource use going up to 100% for long periods of time, mainly through the multiplication of the gkts (?) service. It only used 3.8MB at a time, but at one point there were 20 instances of it open. I concluded it was Ubuntu One causing the problem, so I reinstalled again, this time not logging into Ubuntu One. No problems for 4 hours, even as I installed software. Then I ran the automatic software update, and the problems began again immediately. Constant crashing, crazy graphic corruption and other issues. Ran the system log and got the similar error: kernel [224.243459] [drm: Enable RC6 States: RC6 off, RC6p off, RC6p off] kernal [246.465377] [drm: i95_hangcheck_hung] *ERROR* Hangcheck timer elapsed GPU hung etc., etc. This is a nightmare. Need a fix. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic GPU hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
