On Thu, 25 Aug 2016 18:12:19 +0200,
Chris Wilson wrote:
>
> > Maybe But it's hard to tell exactly whether this is
> > the 100% culprit. As said, there have been multiple S4 bugs, so far.
> > IVY worked without this patch (after x86 fixes), but obviously this
> > had no negative effect, either.
>
> Try
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 95ddd56b89f0..913ccf14c5a9 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -1946,6 +1946,7 @@ static int i915_pm_thaw(struct device *dev)
> /* restore: called after loading the hibernation image. */
> static int i915_pm_restore_early(struct device *dev)
> {
> + intel_gpu_reset(dev_to_i915(dev), ALL_ENGINES);
> return i915_pm_resume_early(dev);
> }
>
> as a shot in the dark.
OK, I'll check it. Maybe the result will be on tomorrow as I'll need
to leave soon from my office.
Thanks!
Takashi
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