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 ?
[1] https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.htm... [2] https://bugzilla.mozilla.org/show_bug.cgi?id=814964