Instalei recentemente o Ubuntu mate 18.04 no meu XPS 15 9560. Não consigo ajustar o brilho da tela de nenhuma maneira. Eu tentei o seguinte:
- Defina o acpi_backlight = vendor nos parâmetros de inicialização
- xbacklight usado, que fornece os seguintes resultados
.
xypnox@xypnox-xps:~$ xbacklight -set 50
No outputs have backlight property
Também segui outra pergunta no xbacklight: Nenhuma saída possui propriedade de luz de fundo - Nenhuma pasta / sys / class / backlight , e a saída para sudo find /sys/ -type f -iname '*brightness*'
é
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