View source for Brightness On Thinkpad x61s running Debian

==Brightness On Thinkpad x61s running Debian==

Somehow after a fresh installation of Debian Testing "Squeeze" I was not able to control the LCD Brightness with {{key|Fn}}{{key|Pos1}} and {{key|Fn}}{{key|Ende}} any more. {{cmdroot|acpi_listen}} did show that the corresponding ACPI events were generated. So I ended up with an additional set of acpi rules, that solve the problem.

{{path|/etc/acpi/thinkpad_video_brightnessup.sh}}

<pre>
#!/bin/sh
# /etc/acpi/thinkpad_video_brightnessup.sh
echo $(( $(grep current /proc/acpi/video/VID1/LCD0/brightness | cut -d ' ' -f 2)+10)) > /proc/acpi/video/VID1/LCD0/brightness
</pre>


{{path|/etc/acpi/thinkpad_video_brightnessdown.sh}}

<pre>
#!/bin/sh
# /etc/acpi/thinkpad_video_brightnessdown.sh
echo $(( $(grep current /proc/acpi/video/VID1/LCD0/brightness | cut -d ' ' -f 2)-10)) > /proc/acpi/video/VID1/LCD0/brightness
</pre>


{{path|/etc/acpi/events/video_brightnessdown}}

<pre>
# /etc/acpi/events/video_brightnessdown
event=video LCD0 00000087
action=/etc/acpi/thinkpad_video_brightnessdown.sh
</pre>


{{path|/etc/acpi/events/video_brightnessup}}

<pre>
# /etc/acpi/events/video_brightnessup
event=video LCD0 00000086
action=/etc/acpi/thinkpad_video_brightnessup.sh
</pre>


Restart acpid and the brightness keys work again :-)


[[:Category:X61s|X61s]][[Category:X61s]][[Category:X Series]][[Category:Debian]]