Ambient light sensor configuration?

Sam Varshavchik mrsam at courier-mta.com
Fri Dec 14 00:41:56 UTC 2007


Frank Cox writes:

> On Wed, 12 Dec 2007 19:57:55 -0500
> Sam Varshavchik <mrsam at courier-mta.com> wrote:
> 
>> My laptop seemingly has an ambient light sensor, of some kind, and the 
>> kernel apparently knows about it, but won't let me access it. 
> 
> Are you sure it's kernel-controlled?  Perhaps it's 100% hardware.
> 
> Try covering that sensor when you're looking at Grub and see if it brightens
> or dims the screen then.

Tried that. No response in Grub, the LCD backlight begins reacting to the 
ambient light sensor as soon as the kernel boots, even before initscripts 
mount all the filesystems.

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