> I use this tool: http://www.xs4all.nl/~bsamwel/laptop_mode/tools/
> that automagically fires up whenever needed
>
> $ cat /etc/laptop-mode/batt-start/brightness
> #!/bin/sh
> echo -n CHOOSE_A_LOW_VALUE > /sys/class/backlight/sony/brightness
Also, we need to make hot-key events have similar handling code .
For example, Fn+F5 and Fn+F6 are brightness down and up key on my sony laptop.
There is a driver called sonypi.c can map Fn+F5/F6 to KEY_FN_F5/F6. But I
think It should be mapped to KEY_BRIGHTNESSDOWN/UP (linux/input.h)
Although, sonypi.c is NOT so clean, but , if it can report right event to
input layer for all sony laptop(it works for me), and all related functions
can be controlled through generic sysfs interface, then I would say sony has
the best hot-key solution I have even seen so far for linux.
Thanks,
Luming.
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