[maemo-developers] Commands for adjusting screen brightness for N810

[From: Frantisek Dufka]

David Weinehall wrote:
> The relevant GConf key in question is:
> 
> /system/osso/dsm/display/display_brightness
> 
> and valid values are 1-5.

There is also a kind of hack used by advanced brightness applet. The 
system below (=dsme daemon) has finer granularity. Brignthess can be 
changed (as root user) via command
chroot /mnt/initfs dsmetest -l n
n = 0-255
The hardware itself has only 127 levels so for dsmetest you need to 
multiply by two. Also running dsmetest with no paremeter prints a help, 
you might find -d,-b,-x useful too.

All this is valid for OS2008 only (N8x0). Also when playing with 
brightness on this level it is useful to disable ambient light sensor or 
it will change it. This can be done by removing filter-brightness-als 
from Module line in /etc/mce/mce.ini (this works for N900 too).

Frantisek