Typically gpu lockup bugs all share the same symptoms (more or less) but can have completely different root causes. "Mouse moving but screen not updating" is nigh-universal to all GPU lockup bugs. Unfortunately we don't have the debugging tools available in the distro to distinguish freezes on -nouveau like we do for -intel.
So, it would *really* help if each person could file their bug report as a unique, separate bug report, rather than joining this bug report assuming it's the same issue. If you don't want to, that's ok, but we'll be focusing only on Marc's issue and once that's solved will close this bug report out. Marc, did you attempt the nouveau.noaccel=1 workaround that Thomas mentioned? Also, the dmesg in your original bug report appears to be from a working session. What we need for analysis purposes is dmesg (and why not, /var/log/Xorg.0.log too) from when it is locked up; you will want to ssh into the box from another machine to do this. @everyone else, again, please file a new bug report. In each case we're also going to need dmesg and /var/log/Xorg.0.loggggggggggggggggggggg from while it's frozen. There are some various help documents at http://wiki.ubuntu.com/X for troubleshooting and analyzing these kinds of issues. If your lockup happens during boot, one thing to try is to disable vesafb in grub on the kernel command line by passing vesafb.anything=1; see https://wiki.ubuntu.com/Kernel/KernelBootParameters for guidance on setting kernel parameters. ** Changed in: xserver-xorg-video-nouveau (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in ubuntu. https://bugs.launchpad.net/bugs/711434 Title: [natty] frequent Xorg freezes with nouveau _______________________________________________ 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