[ltp] Command to dim the LCD brightness

[Bob Alexander]

Alex Deucher wrote:
> On Tue, 11 Jan 2005 16:38:24 +0100, Bob Alexander <bob@ngi.it> wrote:
> 
>>In my ibm-acpi scripts I want to lower the brightness of the LCD just
>>like pressing Fn+End when the AC power goes off and resume full
>>brightness when AC is reinserted.
>>
>>I know which events to capture with ibm-acpi but I do not know what
>>action to perform to minimize/maximize the brightness.
> 
> 
> Support for acpi video type devices was added to recent 2.6 kernels. 
> this allows you to adjust things like screen brightness, etc.  I'm not
> sure how you would hook it into ibm-acpi.
> 
> Alex
> 

Alex,
could you be more specific in how could I use ACPI to lower brightness 
(not turn off) of my LCD ?? It must be possible since the Fn-Home and 
Fn-End thinkpad keys do that ....

TIA,
Bob