linux-kernel - Re: 2.6.31-rc2: thinkpad boots with backlight low

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Message-ID: <20090715143509.GC22098@khazad-dum.debian.net>
Date:	Wed, 15 Jul 2009 11:35:09 -0300
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Tobias Diedrich <ranma+kernel@...edrich.de>,
	Pavel Machek <pavel@....cz>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.31-rc2: thinkpad boots with backlight low

There is one thing that comes to mind: display power management.

Is anything, by chance, setting the backlight devices to low power mode
on machine restart?  The backlight drivers would try to set brightness
to 0 when it cannot turn the display off for real...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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