Hello Aaron, Thanks for taking the time to comment on the issue. In my case it does seem like a hardware problem, because the driver crashes in Windows 7 as well. (It doesn't hang, however Windows keeps saying that 'nvidia driver crashed and was restored'.) I can't tell whether the symptoms are the same though, because I don't use Windows that much and don't know where to find nvidia logs there.
Besides, sometimes after the crash I have to turn off my laptop for several minutes, otherwise it repeats right after reboot. (Both in Ubuntu and Windows.) However, after I changed PowerMizer mode to 'Prefer Maximum Performance' in nvidia-settings in Ubuntu, the issue disappeared completely. (I changed it back to 'Adaptive' since then, because the fan was a little bit too noisy.) Besides, now it happens less frequently (because of new kernel version?) So it seems that even if it's a hardware issue, it's triggered by nvidia driver. I can't check nouveau, because it doesn't support my GPU (GeForce GT 555M). And the temperature was the first thing I looked into, it's not a problem. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/733374 Title: X freeze, nvidia-current, Ubuntu 11.04 Maverick GeForce 9600GT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/733374/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp