[Intel-gfx] WARNING: CPU: 1 PID: 2846 at drivers/gpu/drm/i915/intel_sdvo.c:1378

[Linus Torvalds]

On Fri, Aug 2, 2013 at 2:26 AM, Ville Syrjälä
<ville.syrjala at linux.intel.com> wrote:
>
> Looks like this could happen when you go to DPMS_OFF. After we've turned
> off the the pipe, get_pipe_config() gives a mostly zeroed pipe_config
> (including pixel_multiplier), and then in the case of SDVO, we go and
> check it against the encoder's idea of pixel_multiplier anyway.
>
> I'm thinking perhaps we shouldn't call get_config for inactive
> encoders. How about the following patch?

Yup, seems to fix it for that machine.

Thanks,

             Linus