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分类: LINUX

2018-08-25 14:52:36

参考资料:  https://wiki.archlinux.org/index.php/Backlight

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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  1. #xrandr | grep connected | cut -f1 -d" "
  2. Use the output name found (in this case "eDP-1") and adjust the brightness
  3. #xrandr --output eDP-1 --brightness 0.7
2. 调整屏幕亮度第二种方法:xbacklight,始终无法使用xbacklight -set 命令,不论怎么在/etc/X11/xorg.conf里面尝试各种内容,结果都是失败,最后放弃了用命令,而是改成了直接echo 6|tee 这种方式.


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  1. #安装
  2. apt-get install xbacklight

  3. root@kali:~# xbacklight -set 7        
  4. No outputs have backlight property

  5. root@kali:~# readlink /sys/class/backlight/acpi_video0
  6. ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0

  7. root@kali:~# find /sys/ -type f -iname '*brightness*'
  8. /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/leds/phy0-led/max_brightness
  9. /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/leds/phy0-led/brightness
  10. /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/max_brightness
  11. /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness
  12. /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/actual_brightness
  13. /sys/devices/platform/i8042/serio0/input/input0/input0::capslock/max_brightness
  14. /sys/devices/platform/i8042/serio0/input/input0/input0::capslock/brightness
  15. /sys/devices/platform/i8042/serio0/input/input0/input0::scrolllock/max_brightness
  16. /sys/devices/platform/i8042/serio0/input/input0/input0::scrolllock/brightness
  17. /sys/devices/platform/i8042/serio0/input/input0/input0::numlock/max_brightness
  18. /sys/devices/platform/i8042/serio0/input/input0/input0::numlock/brightness
  19. /sys/module/video/parameters/brightness_switch_enabled
  20. /sys/module/i915/parameters/invert_brightness

  21. #最大亮度只有9,多数笔记本最大亮度应该是15
  22. root@kali:~# cat /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/max_brightness
  23. 9

  24. #当前亮度5
  25. cat /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/actual_brightness
  26. 5

  27. #设置新的亮度
  28. echo 7 |tee /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness


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