linux-kernel - Re: X "Hangs" with RS690 + 2.6.26

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Date:	Sat, 9 Aug 2008 05:47:42 -0300 (BRST)
From:	Frédéric L. W. Meunier <2@...validus.net>
To:	Jonathan McDowell <noodles@...th.li>
cc:	dri-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: X "Hangs" with RS690 + 2.6.26

On Fri, 1 Aug 2008, Jonathan McDowell wrote:

> On Fri, Jul 25, 2008 at 11:10:07AM +0100, Dave Airlie wrote:
>>> I've started to see "hangs" with X on an ATI RS690 with a 2.6.26 kernel.
>>> The symptoms are that load average goes up, X stops accepting keypresses
>>> or mouse clicks, but the cursor still moves around the screen in
>>> response to the mouse being moved. I can't switch to a VT but can ssh in
>>> remotely to see that things are still running. I don't seem to be able
>>> to kill X but "shutdown -r now" cleanly reboots.
>>>
>>> radeon driver is recent git - 1c5858484da4fb1c9bc3ac3b4d7a97863ab99730
>>> but I've seen it with older revisions too.
>>>
>>> It can take a couple of days for me to hit the problem, so a git bisect
>>> could be a lengthy process. If anyone has any suggestions about faster
>>> ways to track down the issue I'd like to hear them.
>>
>> git log v2.6.25..v2.6.26 drivers/char/drm
>>
>> 5e35eff13f7dd0f5c1d82b3b4708b2f7a5f44113
>> 5cfb6956073a9e42d44a26790b7800980634d037
>
> No joy.
>
>> d396db321bcaec54345e7e9e87cea8482d6ae3a8
>
> I thought this might be it; nearly 5 days of uptime rather than the
> usual less than 2. But I got the same symptoms today so I'll continue
> working down the list.
>
>> 259434acccbc823ee8bc00b2d2689ccccd25e1fd
>> d7463eb41d88a39de2653fd41857c4ccddb8707b
>> 45e519052e8f583a709edd442a23f59581d3fe42
>> 2735977b12cb0f113aae24afff04747b6d0f5bf1
>> 3722bfc607d46275369865c02fe8694486d640b5
>> fa0d71b967506031f7cb08ced6095d1c4f988594
>> 9f18409ea3d778a171a9505c0a849d846f352bd0

Any joy ? I apparently have the same problem with my RS690. I 
noticed it after upgrading from 2.6.25 to 2.6.26, alongside 
xorg-server (1.4.99.904 to 1.4.99.905) and Mesa (7.1-rc1 to 
7.1-rc3). The ATI driver is 6.9.0.

Here it always freezes in a few minutes or less than an hour. 
When it happens, I'm not running any 3D application and the CPU 
is idle. I may be just typing something in a shell. But it 
works disabling DRI.

Alt-SysRq-s/u/b is the only way. Trying with q freezes the 
mouse cursor.
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