[ltp] hotkey brightness problem

[Jens Rutschmann]

Riccardo Paterna wrote on 28.07.2008 02:22:
> Hi List,
> i'm using gentoo with thinkpad-source i have some problem with
> brightness keys...
> If i use acpi_listen when i use the brightness key i don't see any signal
> I'm using the latest ibm-acpi extra driver and in my dmesg i see :
> 
> thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
> thinkpad_acpi: Lenovo BIOS switched to ACPI backlight control mode
> thinkpad_acpi: standard ACPI backlight interface available, not loading
> native one...
> 
> 
> How i can fix this and have brightness keys working?

Hi,

I had the same problem some days ago (see mailing list archives from July, 21. - 
22.).

Try enabling first CONFIG_VIDEO_OUTPUT_CONTROL and then CONFIG_ACPI_VIDEO in the 
kernel config. To find those options in menuconfig you may use the search 
function invoked by the "/" key.

Best regards,
Jens