Im using Asus Zenbook Pro Duo laptop. As well I cannot change brightness on eDP-1-1 always stays full bright Linux zorinos 5.4.0-66-generic #74~18.04.2-Ubuntu SMP Fri Feb 5 11:17:31 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux I have 2 internal display and 1 HDMI monitor. Since I like to see scaled di…

Asus Zenbook Pro Duo 2nd screen display issue

carmar 3 March 2021 17:06 14

It may be related to your two GPU issue - Asus Zenbook Laptop Brightness not changing - did you ever try those last steps I suggested?