2013/7/24 Aaron Lu <[email protected]>: > On 07/23/2013 03:52 PM, Jörg Otte wrote: >> The brightness of my laptop is always on maximum and can't be scaled >> down. >> Brightness control via function keys was always working on this >> laptop, so this is a regression in v3.11-rc2. > > Please list /sys/class/backlight.
# cd /sys/class # find backlight -name "*" backlight backlight/intel_backlight # cd backlight/intel_backlight # ls actual_brightness bl_power brightness device max_brightness power subsystem type uevent # cat actual_brightness 0 # cat max_brightness 4882 actual_brightness is 0, but brightness is on maximum! > > If there is a intel_backlight, please try to adjust brightness level > through brightness file like this: > # echo XXX > /sys/class/backlight/intel_backlight/brightness > Does it work? no, it doesn't have any visible effect. Thanks, Jörg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
