笔记本在Ubuntu调节屏幕亮度的技巧
CONTROL_BRIGHTNESS=1 # * If your system has the file "/proc/acpi/video/VID/LCD/brightness" (VID may # be VID1 or similar), use this file as BRIGHTNESS_OUTPUT, and use # the command "echo value". The possible values can be listed using the
CONTROL_BRIGHTNESS=1
# * If your system has the file "/proc/acpi/video/VID/LCD/brightness" (VID may
# be VID1 or similar), use this file as BRIGHTNESS_OUTPUT, and use
# the command "echo
# command:
#
# cat /proc/acpi/video/VID/LCD/brightness
# * If you have a file /sys/class/backlight/.../brightness, then you can use
# that file as BRIGHTNESS_OUTPUT, and the command "echo
#
# As far as I understand it the values are between 0 and
# the value contained in the file /sys/class/backlight/.../max_brightness.