Re: nasty suspend resume problem with sandybridge

[Daniel Vetter <daniel@ffwll.ch>]

On Mon, Feb 13, 2012 at 11:44:00AM +0100, Oleksij Rempel (Alexey Fisher) wrote:
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> Am 13.02.2012 11:18, schrieb Daniel Vetter:
> > On Sat, Feb 04, 2012 at 07:17:01PM +0100, Oleksij Rempel (fishor)
> > wrote:
> >> i do not know if this is really graphic related problem, so i
> >> need your help. even excluding some thing will help.
> >> 
> >> Please take look at this bug: 
> >> https://bugzilla.kernel.org/show_bug.cgi?id=42728
> > 
> > Judging from your ehci workaround I think your suspend/resume issue
> > is not i915 related. You mention though somewhere that you also
> > experience memory corruption issues after hibernat (assuming I've
> > read the comments correctly). We are aware of memory corruptions
> > issues due to i915.ko when hibernating, unfortunately no one has
> > yet root-caused this. See e.g.
> > 
> > https://bugs.freedesktop.org/show_bug.cgi?id=35648
> 
> thx, for the response.
> 
> unfortunately this memory corruption appears not in S4, but after
> filed S3.
> Looks like some part entered S3 state and never come back, even after
> poweroff. I think it, because in some cases power-led blinking after
> poweroff - which indicate S3 state. Are there any thing to check to
> see what is misconfigured?
> 
> I agree, that i915 is not the reason of this problem, but i915 make it
> impossible to get oops trace! Any chance to get it work?

As already mentioned by Jesse in the bugzilla, just blacklist it. We don't
really support nomodeset (because for things like suspend/resume it's
actually impossible to properly support).
-Daniel
-- 
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48