linux-kernel - Re: 2.6.28 regression: xbacklight broken on ThinkPad X61s

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Message-ID: <20090105110556.GA28245@srcf.ucam.org>
Date:	Mon, 5 Jan 2009 11:05:56 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Zhang Rui <rui.zhang@...el.com>
Cc:	Tino Keitel <tino.keitel@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	trenn@...e.de, jbarnes@...tuousgeek.org
Subject: Re: 2.6.28 regression: xbacklight broken on ThinkPad X61s

On Mon, Jan 05, 2009 at 05:06:15PM +0800, Zhang Rui wrote:

> hmm, this regression is caused by commit 
> 22c13f9d8179f4c9caecfcb60a95214562b9addc
> 
> but the real problem is that the IGD OpRegion doesn't work well on this
> laptop.

I suspect that the issue is actually that the opregion code works fine 
but i915 interrupts are failing to work properly, which we've seen a 
couple of cases of. Jesse?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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