From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Furniss <andyqos@ukfsn.org>
Subject: Re: GPU lockup CP stall for more than 10000msec on latest vanilla git
Date: Sun, 23 Dec 2012 10:09:25 +0000
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To: Markus Trippelsdorf <markus@trippelsdorf.de>
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Markus Trippelsdorf wrote:

>> Does booting with radeon.wb=0 fix the issue?  Please make sure your
>> kernel has this patch:
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=86a1881d08f65a42c17071a59c0088dbe2870246
>
> My kernel has this patch and radeon.wb=0 doesn't help.

I think that should be no_wb=1