Display Brightness Doesn't Work - Hybrid Graphics

[AlthaTechnology]

Describe the bug

On my laptop with hybrid graphics the brightness doesn't work out of the box.

What did you expect to happen?

I expected the brightness to change as normal.

Output of rpm-ostree status

State: idle
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-gnome-asus-nvidia-open:stable
                   Digest: sha256:c739ef7d7bdea9d7e0b90f58ae2dd658d60c54371acba6992d0ca589a5fc8aaf
                  Version: 41.20250106.3 (2025-01-07T04:25:32Z)

  ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-gnome-asus-nvidia-open:stable
                   Digest: sha256:c739ef7d7bdea9d7e0b90f58ae2dd658d60c54371acba6992d0ca589a5fc8aaf
                  Version: 41.20250106.3 (2025-01-07T04:25:32Z)

Hardware

Asus g16 2024 edition, model # gu605mz OLED display
Intel Ultra 9 185H
Nvidia RTX 4080

Extra information or context

I was able to fix it with these commands:

rpm-ostree kargs
--append-if-missing=acpi_backlight=native
--append-if-missing=nvidia.NVreg_EnableBacklightHandler=0
--append-if-missing=i915.enable_dpcd_backlight=1
--append-if-missing=nvidia.NVreg_RegistryDwords=EnableBrightnessControl=0 \

Edit 2:
Upon further testing this setting isn't needed, and seems to just prevent graphics switching from working properly.
--append-if-missing=nvidia-drm.modeset=1

EDIT: Here is a reference link that I used for some of the fix: https://www.ehmiiz.se/blog/linux_asus_g16_2024/