linux-kernel - Re: [Bug #14939] drm: random hang with i915

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Message-ID: <20100127100109.525b3da6@jbarnes-piketon>
Date:	Wed, 27 Jan 2010 10:01:09 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	"Arnd Bergmann" <arnd@...db.de>
Subject: Re: [Bug #14939] drm: random hang with i915

On Sun, 24 Jan 2010 23:23:04 +0100 (CET)
"Rafael J. Wysocki" <rjw@...k.pl> wrote:

> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.31 and 2.6.32.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.31 and 2.6.32.  Please verify if it still should
> be listed and let me know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14939
> Subject		: drm: random hang with i915
> Submitter	: Arnd Bergmann <arnd@...db.de>
> Date		: 2009-12-07 17:30 (49 days old)
> References	: http://marc.info/?l=linux-kernel&m=126020704125723&w=4
> Handled-By	: Jesse Barnes <jbarnes@...tuousgeek.org>
> 

Any news on this one Arnd?  Does i915.powersave=0 still fix it?  If so
the bug David found and fixed may have an effect.  Apparently the
hardware wasn't automatically disabling self-refresh mode when multiple
pipes were active (though maybe you didn't have this config?), which
could definitely cause problems.

-- 
Jesse Barnes, Intel Open Source Technology Center
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