Public bug reported: The bug I see on my Dell D830 (8GB RAM, Nvidia G86M [Quadro NVS 140M] (rev a1)) with nouveau driver using Kubuntu 16.04.
After login everything seems to work fine for roughly 2 minutes. After that flickering and tearing starts (when moving windows around with the mouse) and gets more intense until the screen is full of "color-blobs" (which means: one cannot see anything anymore). Starting a flash movie in Firefox provokes immediate tearing and flickering. Restarting the kwin compositor helps - for another 2 minutes, then the whole problem starts to catch on momentum again. I tried everything mentioned here: http://askubuntu.com/questions/672007/flickering-in-kde-plasma-5-4 the only thing that helps for a longer period of time is turning off compositing completely. I am unsure where to further look for the problem: Is it kwin? xorg? nouveau? All of them? Whatever? The logs I checked (xorg, syslog, dmesg etc.) contain nothing that I can make sense of. I'd appreciate any hint to where (and: what) to look (for) and which more specific information to collect ... ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: KDE Date: Wed Apr 20 19:22:50 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2016-03-22 (28 days ago) InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160320) SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kubuntu resolution xenial -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1572679 Title: screen flickering and tearing kwin nouveau kubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1572679/+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
