Cannot change screen brightness

[Benji]

I just updated bios (Fedora 38) for my 11th gen from 3.03 to 3.17 and the function keys to control screen brightness are not doing anything, but they were working before the update. I also could not find anything in settings for screen brightness. All other function keys are working.

I also found it odd that night light was unavailable.

[Shiroudan]

[SOLVED-GUIDE] 12th gen not sending XF86MonBrightnessUp / Down

this is a linux kernel problem that is kind of tricky to solve. As the way the linux kernel is written devices can be either registered as a hid-sensor or libinput device, but we have a compound device that is both. If you look at dmesg on boot you will see the ec hid endpoint is registered as a libinput device and then taken over by the hid-sensor-hub driver. I have a thread with some of the linux hid subsystem maintainers, and the conclusion is the way the Linux Kernel is currently written, …

It sounds like it’s most likely this problem!

First try seeing if disabling fn-lock (by pressing Fn+Esc) works though!
Updating the BIOS most likely makes this not persist.

[Benji]

I reinstalled OS and it’s now working normally. Very strange