Created attachment 93534 crash dump when using patch from comment #13 Tried patch from comment #13 . Apparently it didn't solved the issue, but there is some notable change: usually I was able to spot the hang because everything freeze, only the mouse moves. Eventually and often, for some very weird reason, firefox fonts are corrupted, some latin letter is replaced with non latin one or anyway some other symbol, the only fix is to restart firefox. This time just the latter happened. Luckly I checked dmesg and I saw the "stuck at render ring" notification.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274779 Title: [ivb] hang on pageflip (IPEHR: 0x0a000001) To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1274779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
