Messages in this thread | | | Date | Thu, 22 Feb 2007 15:55:24 +0000 (GMT) | From | James Simmons <> | Subject | Re: [Linux-fbdev-devel] no backlight on radeon after recent kernel "upgrade"s |
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> 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?
I just tested various confirations of backlight support. Backlight is ALWAYS selected by default when you select a particular fbdev driver that has backlight support. You just have the option to turn it off if you want. These problems are showing up because of stale .config files.
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