linux-kernel - Re: [Linux-fbdev-devel] no backlight on radeon after recent kernel "upgrade"s

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Message-ID: <20070222020951.GR7920@ca-server1.us.oracle.com>
Date:	Wed, 21 Feb 2007 18:09:51 -0800
From:	Joel Becker <Joel.Becker@...cle.com>
To:	James Simmons <jsimmons@...radead.org>
Cc:	Yaroslav Halchenko <lists@...russian.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-fbdev-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [Linux-fbdev-devel] no backlight on radeon after recent kernel "upgrade"s

On Thu, Feb 22, 2007 at 01:11:18AM +0000, James Simmons wrote:
> > *$> grep BACKLIGH /boot/config-2.6.20 
> > # CONFIG_FB_BACKLIGHT is not set
> > CONFIG_BACKLIGHT_LCD_SUPPORT=y
> > CONFIG_BACKLIGHT_CLASS_DEVICE=m
> > CONFIG_BACKLIGHT_DEVICE=y
> 
> You need to explictly enable the backlight for your fbdev driver. It 
> doesn't do the selecting magically for you.
> Jus do a make "favorite"config and go to the fbdev menu and select the 
> backlight option for your fbdev driver.

	I would think that we'd always want to enable the backlight.
How are people supposed to Just Know that the kernel defaults to a black
LCD?

Joel


-- 

Life's Little Instruction Book #407

	"Every once in a while, take the scenic route."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@...cle.com
Phone: (650) 506-8127
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