I've upgraded to 15.04 and now I'm hitting the very same bug. Compiz will use 100% CPU and the UI freezes, the offending compiz instance will persist consuming CPU time even after systemctl restart lightdm and can only be killed by SIGKILL.
I'm also seeing [17409.810980] NVRM: GPU at PCI:0000:01:00: GPU-50e94984-5501-8f36-bc04-b29c484a5f1e [17409.810988] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception: ChID 0003, Class 00008397, Offset 00000e08, Data 04b00000 [17410.915719] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception: ChID 0003, Class 00008397, Offset 00000f10, Data 44960000 [17421.432239] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception: ChID 0003, Class 00008397, Offset 00000f10, Data 44960000 [17431.525701] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception: ChID 0003, Class 00008397, Offset 00000f10, Data 44960000 in dmesg OpenGL renderer string: GeForce GTX 260/PCIe/SSE2 NVIDIA Driver Version: 340.76 Linux rechenknecht2k7 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Tell me if this is a different bug and I should open a new issue. -- 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: In Progress Status in compiz package in Ubuntu: Fix Released Status in compiz source package in Trusty: Fix Committed 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 : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
