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

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Date:	Mon, 24 Dec 2012 21:50:11 -0700
From:	Shuah Khan <shuahkhan@...il.com>
To:	Borislav Petkov <bp@...en8.de>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Andy Furniss <andyqos@...sn.org>,
	Alex Deucher <alexdeucher@...il.com>,
	Alex Deucher <alexander.deucher@....com>,
	dri-devel@...ts.freedesktop.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: radeon 0000:02:00.0: GPU lockup CP stall for more than 10000msec

On Sun, Dec 23, 2012 at 6:31 AM, Borislav Petkov <bp@...en8.de> wrote:
> On Sun, Dec 23, 2012 at 01:22:12PM +0100, Borislav Petkov wrote:
>> Right, let me try that and report back.
>
> Yep, looks like reverting the above commit fixes it - the boston.com
> website loads just fine.
>
> Thanks.
>
> --
> Regards/Gruss,
>     Boris.

Saw the same error and after reading this thread, reverted the

Commit 2d6cc7296d4ee128ab0fa3b715f0afde511f49c2.

drm/radeon: use async dma for ttm buffer moves on 6xx-SI

and the problem is gone. In my case, it is a solid hang right after
system switches to vga. I was able to login on console once or twice.
But dmesg showed the same message reported in this thread:

[   35.812085] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   35.812091] radeon 0000:01:00.0: GPU lockup (waiting for
0x0000000000000002 last fence id 0x0000000000000001)


My system has:
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee
ATI RV620 [Mobility Radeon HD 3400 Series]

-- Shuah
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