I'm now running the AMD64 version of Precise from the hard-disk, and over several reboots, the GPU has been loading without any problems. It looks like dropping the PAE version of the kernel fixed things for me. I don't know if whatever was happening was due to the mismatch between the 32bit OS and 64bit chip, or if it's something in the 32 bit kernel regardless of the hardware. All I can say is that I've managed to resolve it on my machine. Thanks for your help talking me through different ideas and narrowing this down.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009312 Title: GPU loads unreliably, possible kernel timeout To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1009312/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
