I'm running Linux Mint 18 Cinnamon on my Asus X555LA, which also has Windows 10 installed on another partition (the backlight works perfectly in Windows).
However in Linux Mint: there's already an issue with Fn+F5/F6 not changing the backlight intensity. The various fixes I've tried (but haven't worked) include:
- adding a
20-intel.conffile into the
acpi_listenand pressing Fn+F5/F6 shows no output.
xbacklight -set $percentage
Until about two days ago I could skirt this issue by using the brightness slider in the UI, however even this no longer works and the screen brightness is stuck at 100%.
I am at a loss and no longer know what to do.