Display brightness cannot be adjusted 18.04
I have recently installed Ubuntu mate 18.04 on my XPS 15 9560. I cannot adjust the display brightness through any means. I have tried the following: Set the acpi_backlight=vendor in boot parameters used xbacklight, which gives the following results . xypnox@xypnox-xps:~$ xbacklight -set 50 No outputs have backlight property also I followed another question at … Read more