Hello everybody, This bug still exists. It happens on several of my systems (sysop @ university).
My test system: HP Compaq 8200 Elite CMT (hardware spec: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c02779501) with an extra video-card: Geforce 7300 GS I've tried nouveau and proprietary drivers. I'm running Ubuntu 14.04.2. Packages are as up-2-date as they're going to get. uname -a: Linux HOSTNAME 3.13.0-55-generic #92-Ubuntu SMP Sun Jun 14 18:32:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux We use lightdm, but light-locker is removed, because it causes trouble on other fronts. We also offer a multitude of WM's to our users, with all the trouble that causes :(. We've installed ubuntu-desktop, xubuntu- desktop, kde-workspace, gnome(classic), i3-wm, XMonad, Openbox. Most of our systems have very similar hardware, they're all HP Compaq systems (some a bit older, some newer). The trouble seems to be with the older NVIDIA card, because that's the same on all the troublesome systems. The fix Eloy Paris mentioned in comment #14 is the only thing so far that resolves the issue. Thankfully we use Puppet to manage our workstations, so implementing it wasn't too difficult, but I would very much like to see a more permanent solution. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1424013 Title: Compiz high CPU and UI freeze on NVIDIA after fix for #269904 in trusty-updates Status in Compiz: Fix Committed Status in Compiz 0.9.11 series: Fix Committed Status in compiz package in Ubuntu: Fix Released Status in compiz source package in Trusty: Fix Released Bug description: [ Impact ] Immediately after the fix for #269904 landed in trusty-updates via compiz 1:0.9.11.3+14.04.20150122-0ubuntu1, my 14.04 machine with an NVIDIA card and using the nvidia-304 driver became unusable -- symtoms include compiz process high CPU (100%), UI freeze right after logging in (machine still up, reachable via SSH from the network), and a flood of these messages on the system log. [ Test Case ] Requires a GeForce 6150SE or similar integrated GPU from nVidia. Problem manifests immediately on login. [ Regression Potential ] The fix involves a specific hardware blacklist. Anticipated regressions include fixed support for the specific hard in future nVidia driver releases and potentially additional unidentified hardware affected by this bug needing to be added to the blacklist. Note that there is a manual workaround to the problem consisting of disabling the X11 Sync feature through CCSM. [ Other Info ] This fix was cherry-picked from the Ubuntu "Vivid Vervet" development release where it has been in regular use for some weeks. To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1424013/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
