Arch Linux

kiwitiny

Member

Registered: 2025-10-18

Posts: 2

HDMI output not detected on hybrid Intel/NVIDIA laptop under KDE Wayla

Hello everyone,

I’m running Arch Linux on a laptop with a hybrid GPU setup: Intel UHD 630 + NVIDIA RTX 2060 Mobile.

- I’m using KDE Plasma Wayland with LYDM as my display manager.
- My internal laptop screen (Intel) works fine.
- My external monitor is connected via HDMI, which is physically wired to the NVIDIA GPU.

The problem:
-

xrandr

only shows my internal screen (eDP-1).
-

xrandr --listproviders

shows 0 providers, which is expected under Wayland.
- The file

/sys/class/drm/card0-HDMI-A-1/status

shows disconnected.
- The directory

/sys/class/drm/card1-HDMI-A-1/

does not exist (NVIDIA HDMI output).
- nvidia_drm modeset is enabled (Y).

It seems that KDE Wayland running on Intel cannot detect or use the HDMI output on NVIDIA. I also don’t have a “Detect Displays” button in KDE System Settings → Displays.

I’m looking for advice on:
- How to make my HDMI output on NVIDIA appear and work under KDE Wayland.

Thanks in advance for your help!

kiwitiny

Member

Registered: 2025-10-18

Posts: 2

Re: HDMI output not detected on hybrid Intel/NVIDIA laptop under KDE Wayla

And I'm getting this error message on LYDM. I'm thinking it's probably related.

Can you help me?

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 70,052

Re: HDMI output not detected on hybrid Intel/NVIDIA laptop under KDE Wayla

The messages there are from the nvidia USB chip, try to blacklist ucsi_ccg

xrandr on wayland is borderline meaningless

kscreen-doctor
qdbus6 org.kde.KWin /KWin supportInformation

/sys/class/drm/card0-HDMI-A-1/status
shows disconnected.

for OUT in /sys/class/drm/card*; do echo $OUT; edid-decode $OUT/edid; echo "================="; done

You'll need https://archlinux.org/packages/extra/x86_64/v4l-utils/

It seems that KDE Wayland running on Intel

Sanity check: what about kwin on X11?

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