I am experiencing the same problem on a Dell Inspiron 6400 with an Intel GM945 display controller. Symptoms occur frequently when using chromium-browser. Forcing AccelMethod to "UXA" resolved the symptoms. I'm using Ubuntu 14.04, kernel 3.13.0-32-generic, and xserver-xorg- video-intel version 2:2.99.910-0ubuntu1.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1282867 Title: Frequent hang and render glitches in Xorg, caused by SNA To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1282867/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs