linux-kernel - Re: 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when hibernating.")

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 7 Jun 2016 17:51:52 -0400 (EDT)
From:	Jerome Glisse <jglisse@...hat.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>,
	dri-devel@...ts.freedesktop.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when
 hibernating.")

> On Mon, Jun 06, 2016 at 05:40:19PM -0400, Jerome Glisse wrote:
> > Brokens how ? Symptoms ?
> 
> Whoops, sorry, I meant to elaborate...
> 
> After doing:
> 
>         echo "shutdown" > /sys/power/disk
>         echo "disk" > /sys/power/state
> 
> screen goes blank but machine remains powered on and doesn't go off. No
> responses to keyboard presses, etc. The only thing left to do is the
> reset button.

Ok i don't have too much time to dig into r600 i assume that r700 breaks
the same way so could you verify that attached patch fix the issue for
you. Note that video decoding is likely broken for you after hibernation
but you might have never notice it.

Cheers,
Jérôme
View attachment "0001-drm-radeon-do-not-hard-reset-GPU-while-freezing-on-r.patch" of type "text/x-patch" (1407 bytes)