webgl-conformance-tests gives errors in drm module

webgl-conformance-tests gives errors in drm module

[Toralf Förster]

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.html
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=814964
-- 
MfG/Sincerely
Toralf Förster
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Re: webgl-conformance-tests gives errors in drm module

[Daniel Vetter]

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
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch