Ambient light sensor configuration?
Sam Varshavchik
mrsam at courier-mta.com
Thu Dec 13 00:57:55 UTC 2007
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. With the room
lights reduced, the LCD's backlight gradually steps down to half power, and
goes back to full power when the lights come back up. I can force this to
happen by manually covering up the sensor.
Nothing ACPI-related appears to be logged, when I play with the sensor. I
find nothing interesting in /proc. Nothing interesting in the laptop's BIOS
setup either.
I don't care for the light sensor. I want the LCD backlight to always run at
full power. To hell with global warming, I want to burn as much juice as I
can, but I can't find a way to disable it. Nothing in Gnome Power Management
has any effect, and this ambient light sensor seems to operate completely
independent on any power setting. So, how do I disable this thing? By
disable I don't mean to cover it up with black tape, and keep the LCD
backlight at half power, all the time. Quite the opposite.
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