UB
Universal Blue•5w ago
blu

Screen brightness stuck on 35% after switching to dGPU

Hi everyone, I hope you are all doing fine this evening. I'm struggling to fix a problem on my laptop whenever I switch to my dGPU via supergfx. The screen brightness won't change via KDE's brightness slider nor the FN keys. I've read that this is a known issue with laptops equipped with hybird graphics on github, I tried the commands on the github article but they never worked. Any help with resolving this issue is greatly appreciated. Thank you and have a good night. Here is my fastfetch output incase anyone needs it. 
Blu@NETGEAR

bazzite-asus-nvidia-open:stable 
Bazzite 41 (FROM Fedora Kinoite)
Linux 6.13.6-103.bazzite.fc41.x86_64
6 mins
Spawned on Mar 22 2025

ROG Zephyrus G16 GU603VI_GU603VI (1.0)
13th Gen Intel(R) Core(TM) i7-13620H (16) @ 4.90 GHz
NVIDIA GeForce RTX 4070 Max-Q / Mobile [Discrete]
Intel UHD Graphics @ 1.50 GHz [Integrated]
4.94 GiB / 15.23 GiB (32%)
24.82 GiB / 475.35 GiB (5%) - btrfs [Read-only]
1920x1200 @ 165 Hz in 16" [Built-in]
59% [Charging, AC Connected]
Mouse passthrough (absolute)

KDE Plasma 6.3.3
KWin (Wayland)
bash 5.2.32
Ptyxis 47.10
2766 (rpm), 46 (flatpak)
Blu@NETGEAR

bazzite-asus-nvidia-open:stable 
Bazzite 41 (FROM Fedora Kinoite)
Linux 6.13.6-103.bazzite.fc41.x86_64
6 mins
Spawned on Mar 22 2025

ROG Zephyrus G16 GU603VI_GU603VI (1.0)
13th Gen Intel(R) Core(TM) i7-13620H (16) @ 4.90 GHz
NVIDIA GeForce RTX 4070 Max-Q / Mobile [Discrete]
Intel UHD Graphics @ 1.50 GHz [Integrated]
4.94 GiB / 15.23 GiB (32%)
24.82 GiB / 475.35 GiB (5%) - btrfs [Read-only]
1920x1200 @ 165 Hz in 16" [Built-in]
59% [Charging, AC Connected]
Mouse passthrough (absolute)

KDE Plasma 6.3.3
KWin (Wayland)
bash 5.2.32
Ptyxis 47.10
2766 (rpm), 46 (flatpak)
1 Reply
blu
bluOP•3w ago
hi all, im still looking for support on this issue ive tried the commands related to this issue from the known issues github and none of them worked so far

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