软件包：light（1.2.2-2）

control display backlight controllers and LEDs

Light is a useful tool to control display brightness in lightweight desktops or window managers that do not have bundled applications for this purpose.

Most modern laptops have moved away from hardware controlled brightness and require software control. Light works where other software has proven to be unreliable, e.g. xbacklight. It can even be used from the console as it does not rely on X.

Light has features like setting a minimum brightness value, as well as saving and restoring the brightness at reboot and startup.

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