On Sun, Feb 17, 2013 at 11:28 AM, Toralf Förster toralf.foerster@gmx.de wrote:
While running the WEB-GL tests in [1] firefox crashed a ThinkPad T420 w/ i915 graphic. The kernel log gives:
2013-02-17T10:32:58.451+01:00 n22 kernel: [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for forcewake to ack request. 2013-02-17T10:32:58.451+01:00 n22 kernel: [drm:__gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out 2013-02-17T10:32:58.470+01:00 n22 kernel: [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for forcewake to ack request. 2013-02-17T10:32:58.470+01:00 n22 kernel: [drm:__gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out
A developer responded of that bug report [2] that it is a MESA thing but b/c of the kernel msg I'm wondering whether the kernel module might be affected too ?
rc6 is an extremely fickle beast, but generally you see those messages right before the gpu dies. So I'll bet there's more than just those messages in dmesg. In any case, please try out the latest upstream driver sources first for mesa (9.1 branch) and kernel (3.8-rc series) to ensure it's not a know bug. If it still hangs you /should/ get a line about i915_error_state in debugfs in dmesg. Please file a bug report on bugs.freedesktop.org with that file attached (and citing all the git versions you've used for testing). -Daniel