linux-kernel - Re: Yet another 2.6.35 regression (AGP)?

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Date:	Fri, 9 Jul 2010 12:27:43 -0400
From:	Woody Suwalski <terraluna977@...il.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Yet another 2.6.35 regression (AGP)?

Jesse Barnes wrote:
> On Fri, 9 Jul 2010 10:21:56 -0400
> Woody Suwalski<terraluna977@...il.com>  wrote:
>
>    
>> I have found one system, where 2.6.35 does not work (as tested with rc3
>> and rc4)
>> That Intel system has no problems in 2.6.33.x nor 2.6.34.0.
>>
>> The problem seems to be in AGP - I can boot if I specify "agp=off" - but
>> of course only in text mode...
>> There seems to be a hard lock-up, so the only way to show the crash is
>> by picture 8-)
>>
>> Since I do not build kernel on that machine, I did not do any bisect
>> tests, however if someone is interested in digging deeper, I can try...
>> Preferably a patch to try out ;-)
>>
>> This bug seems to be different then
>> https://bugzilla.kernel.org/show_bug.cgi?id=16179
>>
>> Should it be blamed on BIOS (the conflict indicated just before the crash)?
>>      
> Well even if the BIOS is doing something bad, if we handled it in
> earlier kernels we should handle it today.  So this sounds like a
> regression.
>
> A bisect should help if it was working before, can you do that?
>
>    
OK, I have never really done the brute-force bissecting, but there is 
always first time...
Will try to do it over the weekend...

Unless U will be visiting Ottawa  and want to do it yourself ;-)

Woody

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