(In reply to comment #100) > I have, I think, a reliable way to trigger this behavior, if that helps. It > requires a non-trivial setup, though. > > I have gnome-shell running on dual monitors. The first is 1920x1200, the > second is 1920x1080 (not sure if the resolution difference matters). If I > run a full-screen game on The 1920x1200 monitor, I get freezes, and notes in > the dmesg about hangcheck timers and kickrings ("stuck wait on blitter > ring"). > > I believe OpenGL acceleration of the desktop is important, because the > freezes are not triggered in fluxbox, for instance. I'm not sure if the game > itself needs to be using OpenGL, or if the full-screen window is the > triggering factor, or something else entirely. It is important that the game > keep the monitors distinct, and only go full screen on one. I just tried it > on Battle for Wesnoth, and full screen there sets the monitors to mirror, > which doesn't trigger the problem. > > This is on an i7 4770, if that matters. > > I realize this is may be difficult to put together for a test setup, but I > thought I'd mention it.
I also have dual monitors and also gnome-shell, but I have on both 1920x1080px. I notice that when I am watching some videos on full screen on one monitor, this is happening more often (on non full-screen work, it's still happening) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1041790 Title: [snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001, workaround i915.semaphores=0 To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1041790/+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