2025 ASUS Zephyrus G16 5080 issues | Omacom | Page 1

compact marsh Oct 29, 2025, 6:29 AM

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Hi all,

Am currently having a few issues getting Omarchy configured fully. PSA this is my first time using Linux, and I am about 2 days into learning.

Issues:
Brightness Control
dGPU shutoff
Audio Issues

cmdline: cryptdevice=PARTUUID=a3bc6967-22c6-4c0f-9a74-7d4981274579:root root=/dev/mapper/root zswap.enabled=0 rootflags=subvol=@ rw rootfstype=btrfs quiet splash rd.driver.blacklist=nouveau modprobe.blacklist=nouveoau nvidia-drm.modset=1 i915.enable_dpcd_backlight=1 nvidia.NVreg_EnableBacklightHandler=0 nvidia.NVreg_RegistryDwords=EnableBrightnessControl=0

I have also installed the linux-g14 kernel and headers supported from the asus arch guide. System also kept getting stuck on shutdown so my fix for the was disabling my sd card reader slot... and it worked.

Installed rog and superfxctl, aswell as nvidia-prime. Originally had nvidia drivers but was doing more harm than good so I removed it.

Sorry for the ramble, just wanted to supply as much information as I could. My goal is to have the battery as effiecient as possible for work use, so ideally disable dGPU and be able to lower my OLED brightness from max.

compact marsh Oct 29, 2025, 7:19 AM

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2025 ASUS Zephyrus G16 5080 issues

compact marsh Nov 4, 2025, 4:13 AM

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have solved the dgpu control issues, but have yet to find a fix for brightness controls and audio

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when i drop below 5% brightness the screen goes black, and anything above 5% is max brightness

young umbra Jan 4, 2026, 6:13 PM

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I have a fix if ur still interested

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In my case it was super simple. You just set i915.enable_dcpd_backlight=3

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That fixed brightness controls for me completely on 2025 G16 (5070ti)

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Getting stuck on shutdown for me was fixed when installing the Linux-g14 kernel I think though.

#2025 ASUS Zephyrus G16 5080 issues