小编xyp*_*nox的帖子

我最近在我的 XPS 15 9560 上安装了 Ubuntu mate 18.04。我无法通过任何方式调整显示亮度。我尝试了以下方法：

1. 在启动参数中设置 acpi_backlight=vendor
2. 使用 xbacklight，结果如下

.

xypnox@xypnox-xps:~$ xbacklight -set 50
No outputs have backlight property

还我跟着另一个问题xbacklight：否输出有背光属性-无/ SYS /类/背光文件夹，并且输出用于sudo find /sys/ -type f -iname '*brightness*'IS

xypnox@xypnox-xps:~$ sudo find /sys/ -type f -iname '*brightness*'
/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/brightness_hw_changed
/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/max_brightness
/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::capslock/max_brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::capslock/brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::numlock/max_brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::numlock/brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::scrolllock/max_brightness
/sys/devices/platform/i8042/serio0/input/input4/input4::scrolllock/brightness
/sys/module/video/parameters/brightness_switch_enabled
/sys/module/i915/parameters/invert_brightness