Felipe: I'm still waiting for a definite confirmation that the nouveau's backlight driver doesn't work. If you could ensure that you're using nouveau, then test changing the brightness via the /sys/class/backlight/nv_backlight/brightness file, that would be a big help.
Felipe: I'm still waiting for a definite confirmation that the nouveau's backlight driver doesn't work. If you could ensure that you're using nouveau, then test changing the brightness via the /sys/class/ backlight/ nv_backlight/ brightness file, that would be a big help.