Intel i915 GPU hung

[Garrett Cooper]

On Thu, Sep 11, 2014 at 6:08 PM, Lundberg, Johannes
<johannes at brilliantservice.co.jp> wrote:
> First try with sna+swapbufferswait+tearfree gave me this after a while
>
> Xorg.log
>
> [  1901.000] (EE) intel(0): sna_mode_redisplay: page flipping failed,
> disabling CRTC:3 (pipe=0)
> [  1901.365] (EE) intel(0): sna_mode_redisplay: page flipping failed,
> disabling CRTC:5 (pipe=1)
> [  1901.441] (EE) intel(0): Detected a hung GPU, disabling acceleration.
> [  2841.578] (II) UnloadModule: "mouse"
> [  2841.578] (II) UnloadModule: "kbd"
> [  2841.579] (II) intel(0): switch to mode 1366x768 at 60.0 on pipe 0 using
> LVDS1, position (0, 0), rotation normal
> [  2841.632] (EE) intel(0): failed to set mode: Unknown error: -22
> [  2841.632] (II) intel(0): switch to mode 1280x720 at 60.3 on pipe 1 using
> VGA1, position (0, 0), rotation normal
> [  2841.683] (EE) intel(0): failed to set mode: Unknown error: -22

    This looks off -- it's the Linux kernel error code for EINVAL
(FreeBSD error codes in the kernel being positive).
Cheers,
-Garrett