Laptop Panel brightness control

[David Zeuthen]

On Mon, 2006-05-22 at 21:41 +0200, Timo Hoenig wrote:
> On Mon, 2006-05-22 at 20:38 +0100, Richard Hughes wrote:
> 
> > Erm... We're getting a:
> > 
> > condition ButtonPressed = brightness-up
> > 
> > from ACPI, which for most laptops means "the buttons been pressed, do
> > something".
> 
> Please specify:  "from ACPI".  What driver generates the event?

I'm not sure it's important exactly _what_ generates the event (I think
it's some input device created by kernel driver, maybe USB HID, Crispin
can probably clarify here). 

Fact of the matter is that 

 1. we get an event when the brightness+ / brightness- key is pressed
    so e.g. g-p-m can show some fancy bling graphics for that

 2. we know this is handled in hardware so e.g. g-p-m shouldn't attempt
    to change the brightness

and that's all good I think. I'm not sure I understand what you're
getting at?

    David