linux-kernel - back light conflict i915 vs dell-laptop

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Message-ID: <20101125093301.GT1522@bicker>
Date:	Thu, 25 Nov 2010 12:33:01 +0300
From:	Dan Carpenter <error27@...il.com>
To:	chris@...is-wilson.co.uk
Cc:	mjg@...hat.com, rpurdie@...ys.net, kernelorg@....de,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: back light conflict i915 vs dell-laptop

Patrick Schaaf has reported that the i915 driver is setting his
backlight very dim when he starts GDM.

https://bugzilla.kernel.org/show_bug.cgi?id=23472

It should be the dell-laptop platform driver controlling his backlight.

Gnome tries to restore the backlight settings through the dell_laptop
interface in sysfs but it fails.  (Because the platform hardware refuses
to set the settings to what it thinks they already are).

regards,
dan carpenter

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