I'm actually turning off the backlight off the screen with radeontool using a script. The script is launched with the access ibm button, but I'd like to use the fn+f3 combinaison but I can't get find out the tips. Can you help me ?

Note : I'm the owner of a T42 (2373-CXG)

Hi!

I own a x40 and I use the ibm-acpi-module together with regular acpi to catch fn+f3.
I dont know if it will work for the t42 but it might be worth a try...

http://ibm-acpi.sf.net

Best regards
Thomas