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SubjectRe: 3.15-rc: regression in suspend
On Thu 2014-05-15 17:31:54, Daniel Vetter wrote:
> On Thu, May 15, 2014 at 5:29 PM, Jiri Kosina <jkosina@suse.cz> wrote:
> >> > Note that X do work somehow after resume (I can't switch virtual
> >> > desktops and dialog is stuck on screen, but it is not complete
> >> > failure). I can do ctrl-alt-f1 and get to useful prompt.
> >>
> >> Oops. You were right. It seems it is duplicate after all.
> >>
> >> [drm:init_ring_common] *ERROR* render ring initialization failed ctl 0001f001 head 00001020 tail 00000000 start 00003000
> >
> > Pavel, thanks a lot for testing.
> >
> > Adding Daniel and Chris to CC -- we have another incarnation of the bug
> > that is being chased in 76554.
>
> Someone succeeding at a bisect would be awesome ... Note that the only
> key here is the ring init failure in dmesg.

Hmm. I was slowly getting ready for doing the bisect, but it seems
someone did it for me.

Date: Wed, 28 May 2014 18:25:21 +0100
From: Ken Moffat <zarniwhoop@ntlworld.com>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>, linux-kernel@vger.kernel.org
Subject: Resume from suspend broken in 3.15. (bisected)
User-Agent: Mutt/1.5.23 (2014-03-12)

I manually reverted 25f397a429dfa43f22c278d0119a60a343aa568f and it
seems I'm back at working suspend/resume in i915.

The 3.15 regression seemed to be "if suspend works once, it seems to
work until reboot", otherwise it failed in cca 70% cases. I did two
reboots so far with 25f... reverted, and it seems to behave ok.

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


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