linux-kernel - Re: 3.15-rc: regression in suspend

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Message-ID: <20140711192629.GA20015@amd.pavel.ucw.cz>
Date:	Fri, 11 Jul 2014 21:26:30 +0200
From:	Pavel Machek <pavel@....cz>
To:	Jiri Kosina <jkosina@...e.cz>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Linux-pm mailing list <linux-pm@...ts.osdl.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Subject: Re: 3.15-rc: regression in suspend

On Mon 2014-07-07 10:39:08, Daniel Vetter wrote:
> On Fri, Jun 27, 2014 at 03:37:16PM +0200, Jiri Kosina wrote:
> > On Thu, 26 Jun 2014, Pavel Machek wrote:
> > 
> > > Ok, so I have set up machines for ktest / autobisect, and found out that 
> > > 3.16-rc1 no longer has that problem. Oh well, bisect would not be fun, 
> > > anyway...
> > 
> > I am still seeing the problem with 3.16-rc2.
> 
> I'm confused now. Is the bisect result
> 
> commit 773875bfb6737982903c42d1ee88cf60af80089c
> Author: Daniel Vetter <daniel.vetter@...ll.ch>
> Date:   Mon Jan 27 10:00:30 2014 +0100
> 
>     drm/i915: Don't set the 8to6 dither flag when not scaling
> 
> now the culprit or not? Or do we have 2 different bugs at hand here?

Three different issues, it seems. Two ring initialization problems,
one went away in 3.16 (for me), second did not (suspend for jikos),
third -- trivial issue with 8to6 dither.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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