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

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Message-ID: <20100709104953.7028c6b7@virtuousgeek.org>
Date:	Fri, 9 Jul 2010 10:49:53 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Woody Suwalski <terraluna977@...il.com>
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)?

On Fri, 9 Jul 2010 12:27:43 -0400
Woody Suwalski <terraluna977@...il.com> wrote:

> 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...

Great, thanks.

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

Nope, no immediate plans. :)

-- 
Jesse Barnes, Intel Open Source Technology Center
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