Sebastian WickAug 8, 2025

Over the last year, I overhauled the screen brightness handling in GNOME! This will become available in the upcoming 49 release, but you can already try it on GNOME OS.

https://blog.sebastianwick.net/posts/gnome-49-backlight-changes/

GNOME 49 Backlight Changes

One of the things I’m working on at Red Hat is HDR support. HDR is inherently linked to luminance (brightness, but ignoring human perception) which makes it an important parameter for us that we would like to be in control of. One reason is rather stupid. Most external HDR displays refuse to let the user control the luminance in their on-screen-display (OSD) if the display is in HDR mode. Why? Good question. Read my previous blog post.

swick's blog
Show threadrazzeAug 8, 2025
@swick my alarm bell is ringing now, tried gnome os a few weeks ago on my new framework 13 and auto brightness was broken, so I had to turn it off. Switched to fedora now, that's fine.
Show threadSebastian Wick
@razze Very likely that this is a regression I introduced because I have no hardware with ALS. If you're comfortable building g-s and g-s-d, ping me on matrix and we can debug this.
Aug 8, 2025 at 6:08pmWeb
Show threadrazzeAug 9, 2025
@swick if I can find a cheap nvme for a test install, we can probably figure that out. But might need a week or two.