I can reproduce this also, just mplayer some video and wait until screensaver starts to dim the screen. Also happened with other screen candy activity while doing some audio production.
Workaround: use DE with no effects enabled. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979446 Title: [i965gm] False GPU lockup render.IPEHR: 0x60020100 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/979446/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
