1. 调整屏幕亮度第一种方法:xrandr ,优点是简单方便
缺点是:However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.
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- #xrandr | grep connected | cut -f1 -d" "
- Use the output name found (in this case "eDP-1") and adjust the brightness
- #xrandr --output eDP-1 --brightness 0.7
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- #安装
- apt-get install xbacklight
- root@kali:~# xbacklight -set 7
- No outputs have backlight property
- root@kali:~# readlink /sys/class/backlight/acpi_video0
- ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0
- root@kali:~# find /sys/ -type f -iname '*brightness*'
- /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/leds/phy0-led/max_brightness
- /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/leds/phy0-led/brightness
- /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/max_brightness
- /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness
- /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/actual_brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::capslock/max_brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::capslock/brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::scrolllock/max_brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::scrolllock/brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::numlock/max_brightness
- /sys/devices/platform/i8042/serio0/input/input0/input0::numlock/brightness
- /sys/module/video/parameters/brightness_switch_enabled
- /sys/module/i915/parameters/invert_brightness
- #最大亮度只有9,多数笔记本最大亮度应该是15
- root@kali:~# cat /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/max_brightness
- 9
- #当前亮度5
- cat /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/actual_brightness
- 5
- #设置新的亮度
- echo 7 |tee /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness