Auto Brightness not working in Fedora

Framework Laptop 13 Linux
1

Which Linux distro are you using?

Fedora Workstation (GNOME)

Which release version?

43

Which kernel are you using?

Linux 6.19.8-200.fc43.x86_64

Which BIOS version are you using?

03.18

Which Framework Laptop 13 model are you using?

AMD Ryzen™ 7040 Series

Problem:

I’m having issues with Auto brightness not working on Fedora on my Ryzen 7640 Framework 13.

I’m fully

Auto brightness does work fine on Windows.

I see the automatic screen brightness setting in settings, and it is on, but auto brightness does not function.

I do have manual brightness control (the brightness keys work fine)

I found some older threads talking about this, but the accepted answers referenced Intel Frameworks, and referenced links that lead to a 404. Would love any help!

2 Likes
2

What’s the link you are referring in the accepted answer? You can use Wayback Machine to retrieve a previously known webpage

3

It leads to an install guide from 2024, where for 13th gen Intel, there’s a command for enabling the brightness keys (which may disable the auto brightness sensor):

sudo grubby --update-kernel=ALL --args="module_blacklist=hid_sensor_hub"

The AMD 7040 link in said guide contains no info regarding screen brightness at all, so given the age of the guide (Fedora 39) and difference in platform, I’m hesitant to make kernel related changes based on it.

4

The guide assumed you can’t switch between automatic and manual brightness without going to the terminal, which is a strange assumption.

The knowledge base is lacking information, there’s another example