I'm having this problem, too!!! Ideapad 3 15ITL05 model. I'm on Ubuntu 21.10, also.
Yes, the brightness controller in the top-right drop-down menu works, but it's more convenient to use the F11/F12 keys.
I'm having this problem, too!!! Ideapad 3 15ITL05 model. I'm on Ubuntu 21.10, also.
Yes, the brightness controller in the top-right drop-down menu works, but it's more convenient to use the F11/F12 keys.