Arch Linux

RogerRabbit

Member

Registered: 2022-12-18

Posts: 79

Gnome HDR calibration

Hello,

I have a laptop capable of HDR (Intel Alder Lake Iris Xe) with compatible built-in screen.
I use gnome, whenever I activate HDR the whole screen gets washed out, even if I put the brightness slider to the top, colors feel off.

I know KDE handles better HDR support right now, so I booted in Fedora KDE live media, from there I enabled HDR, at first it looked dull like Gnome, but as soon as I went through the HDR calibration menu, everything looks magnificent.
I tought Gnome was supposed to offer me a new HDR brightness slider to perfom this calibration, but it seems it's not, the gnome slider just reacts as standard SDR brightness slider, not the "nits slider" expected.
To confirm this, I booted on the Fedora Gnome live media, and there you have it, exact same behavior as my Arch system.

From the KDE calibration tool, I know my screen is 600 nits, is there a way to hard set it somehow so that I can use HDR in Gnome?
Should'nt I have two sliders in Gnome when HDR enabled with single monitor (one slider for brightness, and one HDR slider)?

mms1313

Member

Registered: 2025-08-06

Posts: 17

Re: Gnome HDR calibration

You can use the experimental feature for it, this gnome extension activates it on startup: https://extensions.gnome.org/extension/ … to-enable/

Last edited by mms1313 (2025-11-22 21:40:23)

RogerRabbit

Member

Registered: 2022-12-18

Posts: 79

Re: Gnome HDR calibration

This is how it was done in Gnome 47, but since Gnome 48 there's a built-in switch to enable HDR from the settings display menu.
The issue is not about enabling HDR, but about calibrating it.