This is the dmesg just after the problem arises. I have found out that disabling in Compiz - Opengl the following items: - framebuffer object - Vertex buffer object - Always use buffer swapping
Decreases the impact of the bug. At least the application windows are redrawn after artefacts show. It's however not completely gone. Unity bar is still heavily impacted. dconf reset -f /org/compiz && setsid unity makes (most of) the artefacts in the Unity bar disappear although not for long. ** Attachment added: "Dmesg just after artefacts show up" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1113454/+attachment/3522381/+files/dmesg.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1113454 Title: Artefacts with nouveau driver Status in “xserver-xorg-video-nouveau” package in Ubuntu: New Bug description: On my laptop, Acer Aspire 7520 with a Geforce 8400m G graphics card I can't get the nvidia driver working correctly: this driver crashes my system (brings it to a total freeze, not abililty to start another session or reboot) totally at least 3 times a day. With Nouveau drivers it seems to work fine, but after some time, I get artefacts in programs, on the desktop and the unity bar. It gets unusable very fast. Restarting X solves the problem, but causes (obviously) a restart of all running apps. I have added x-edgers ppa instead of the regular source, but this brings only a very slight improvement (at least so it seems), Well, I have includes a screenshot of my messed up desktop. I have seen that this was a problem in the past as well (found some bug reports for plain vanilla debian). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1113454/+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
