Hello, I'm also experiencing the same problem on a Kubuntu 15.04 System with nvidia-prime and nvidia-346-updates.
Sometimes resuming killed kwin and after restarting kwin the system worked normally. So i figured that killing kwin and and starting it again after that would be a workaround for the problem. Typing blindly "killall kwin_x11 kwin_x11" into krunner does the trick. However putting that into a script inside /etc/pm/sleep.d/ does not seem to work. Best regards -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-prime in Ubuntu. https://bugs.launchpad.net/bugs/1446632 Title: Display output is corrupted after suspend to RAM Status in nvidia-prime package in Ubuntu: Confirmed Bug description: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu Description: Ubuntu 15.04 Release: 15.04 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center nvidia-prime: Installed: 0.8.1 Candidate: 0.8.1 Version table: *** 0.8.1 0 500 http://fi.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status 3) What you expected to happen System is usable after resuming 4) What happened instead The display output gets corrupted. The mouse pointer is drawn correctly and can be moved around the display but the underlying graphics are messed up. Please see attached file. The same occurs both on the laptop display as well as when using external display over HDMI. I am using nvidia-346 graphics drivers. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1446632/+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
