Fedora 42 KDE laptop can't connect HDMI out to External monitor

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1

I’ve tried to connect the builtin hdmi out on my laptop with several monitors/cables, each time the second display is not detected.

What I have:

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.10-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8265U CPU @ 1.60GHz
Memory: 12 GiB of RAM (11.4 GiB usable)
Graphics Processor: Intel® UHD Graphics 620
Manufacturer: LENOVO
Product Name: 81JS
System Version: Lenovo YOGA 730-15IWL

$ switcherooctl list
Device: 0
  Name:        Intel® UHD Graphics 620
  Default:     yes
  Environment: DRI_PRIME=pci-0000_00_02_0


$ glxinfo | grep -e OpenGL.vendor -e OpenGL.renderer
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (WHL GT2)


$ dnf list installed \*intel\*
Updating and loading repositories:
Repositories loaded.
Installed packages
intel-audio-firmware.noarch                20250917-2.fc42                     <unknown>
intel-gmmlib.x86_64                        22.8.1-2.fc42                       <unknown>
intel-gpu-firmware.noarch                  20250917-2.fc42                     <unknown>
intel-mediasdk.x86_64                      23.2.2-7.fc42                       781e4eb56ba449a5876af2cc084d758
intel-vpl-gpu-rt.x86_64                    25.3.4-1.fc42                       <unknown>
intel-vsc-firmware.noarch                  20250917-2.fc42                     <unknown>
libva-intel-media-driver.x86_64            25.3.4-1.fc42                       <unknown>
2

Does it show up in

find /sys/devices -name "edid"
3

This is what I get when I type that in:

$ find /sys/devices -name "edid"
/sys/devices/pci0000:00/0000:00:02.0/drm/card1/card1-HDMI-A-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card1/card1-DP-2/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card1/card1-eDP-1/edid
4

You could try

kscreen-doctor output.HDMI-1.mode.1920x1080@60

Several is strange, since your gpu sees it.

5

Just returns “Output with name or uuid HDMI-1 not found.”

6

Found the solution to my problem here:

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