Hi Matthew, Dang, that sounds really annoying.
I've reviewed the log files you attached, but none show indications of server crashes or GPU freezes, that would indicate an X.org bug. Thanks for the link to UF but we don't review forum discussions due to time constraints; if there's anything pertinent from those threads please re-summarize here for is. The lightdm termination message is normal. lightdm terminates when it hands control over to the user session. The failsafe-x termination likewise is probably innocuous. The eclipse segfault in libgdk-x11 looks interesting; I don't know what that is. If that is always present when you see this bug, it may be a very strong clue. In general, high Xorg CPU is usually caused not by X but by a client program or service, that is out of control and simply making too many X requests (X does not throttle clients). You've ruled out display managers, which is a good start. When you booted into Gnome classic, was that with or without effects? If it was with effects, try without, as that will rule out compiz as the culprit. Try booting into a guest session; that will help indicate if the problem is something in your user settings. Try booting a beta1 or beta2 liveUSB image. If the problem reproduces on that, then that rules out something you've installed. If it doesn't reproduce, check if you've installed any services or secondary tools that could be causing it. The typical procedure for debugging high X cpu issues is to ssh into the sick machine and start killing processes. Given the eclipse crash in libgdk-x11, I'd look for any remaining eclipse processes or anything related to gdk-x11; this could include gnome services for instance. The program 'xrestop' might give some ideas for other apps to try killing (it reports resource memory usage, not processor usage, so your perpetrator may not necessarily show up there at all.) ** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers (Ubuntu) -- 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/976383 Title: Periodic lockups or crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/976383/+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
