我最近在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:
- 在启动参数中设置acpi_backlight = vendor
- 使用了xbacklight,可以得到以下结果
。
xypnox@xypnox-xps:~$ xbacklight -set 50
No outputs have backlight property
我也在xbacklight上关注了另一个问题:没有输出具有背光属性-没有/ sys / class / backlight文件夹,并且的输出sudo find /sys/ -type f -iname '*brightness*'
是
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