Comment 13 for bug 372874

hal 0.5.13-1ubuntu4 in karmic still uses backlight instead of actual_backlight. This causes gnome-power-manager to dim the display of my notebook (Dell Latitude E6400) on first startup and then increase it again to maximum because it thinks the brightness is zero (e.g. brightness = 0, actual_brightness = 15).

I've patched this version of hal to use actual_brightness instead of brightness in hald-addon-generic-backlight and can confirm that it fixes this problem.