linux-kernel - Re: radeon 0000:02:00.0: GPU lockup CP stall for more than 10000msec

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Message-ID: <CAKocOOPaBYU1QOYA1J_pGXyOwuGhEMsTQRzd_T-vUCYmndgaQA@mail.gmail.com>
Date:	Thu, 3 Jan 2013 08:30:50 -0700
From:	Shuah Khan <shuahkhan@...il.com>
To:	"Deucher, Alexander" <Alexander.Deucher@....com>
Cc:	Boszormenyi Zoltan <zboszor@...hu>,
	Alex Deucher <alexdeucher@...il.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	lkml <linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: radeon 0000:02:00.0: GPU lockup CP stall for more than 10000msec

On Thu, Jan 3, 2013 at 7:12 AM, Deucher, Alexander
<Alexander.Deucher@....com> wrote:
>> -----Original Message-----
>> From: Boszormenyi Zoltan [mailto:zboszor@...hu]
>> Sent: Thursday, January 03, 2013 6:37 AM
>> To: Alex Deucher
>> Cc: Markus Trippelsdorf; lkml; dri-devel@...ts.freedesktop.org; Deucher,
>> Alexander; Borislav Petkov; Shuah Khan
>> Subject: Re: radeon 0000:02:00.0: GPU lockup CP stall for more than
>> 10000msec
>>
>> 2013-01-03 00:37 keltezéssel, Alex Deucher írta:
>> > On Wed, Jan 2, 2013 at 5:38 PM, Markus Trippelsdorf
>> > <markus@...ppelsdorf.de> wrote:
>> >> On 2013.01.02 at 17:31 -0500, Jerome Glisse wrote:
>> >>> Please affected people can you test if patch :
>> >>> http://people.freedesktop.org/~glisse/0003-drm-radeon-fix-dma-copy-
>> on-r6xx-r7xx-evergen-ni-si-g.patch
>> >>>
>> >>> Fix the issue, you need to make sure you don't have the patch that
>> >>> disable dma on r6xx ie that line 977-978 & 1061-1062  in radeon_asic.c
>> >>> is :
>> >>>   .copy = &r600_copy_dma,
>> >>>   .copy_ring_index = R600_RING_TYPE_DMA_INDEX,
>> >> It fixes the issue for me. Thanks.
>> > The count is actually the count, not count - 1.  The real fix seems to
>> > be that r6xx requires 2 dw aligned transfers.  The attached patch
>> > fixes the issue for me.
>> >
>> > Alex
>>
>> I tried this patch over kernel 3.8.0-rc2 but the GDM screen is mostly garbage.
>> Only some text, like "Not on the list?" below the users and small icons are
>> visible
>> but many user names are not rendered. http://tinypic.com/r/33xihit/6
>> I am on Fedora 18/x86_64, Radeon HD6570.
>
> I don't think the issue you are seeing is related to this one.  Looks similar to:
> https://bugs.freedesktop.org/show_bug.cgi?id=55574
>
> Alex
>

Tested the patch on 3.8-rc2 and didn't see any problems.

-- Shuah
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