UGREEN Revodok Model CM639 with FP5: graphical glitches

Help Fairphone 5
1

I have bought a UGREEN Revodok CM639 to be able to use my Fairphone 5 in desktop mode, but there are graphical glitchy horizontal lines on the screen.

This is the Dock: UGREEN Revodok Pro USB C Docking Station Dual HDMI 10 IN 1 Hub 2 HDMI, Gigabit Ethernet, 4x USB C/USB A Ports, PD 100W Fast Charging, SD/TF Card Reader: Amazon.de: Computer & Accessories

on stock Android 15 (latest FP5-VT5K), HDMI works in desktop mode, but only when rebooting the phone while having the Dock plugged in.

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And when using LineageOS with Android 16, Desktop-mode is not supported, but only screen mirroring from what it seems, there is also no option to in LineageOS to enable Desktop-mode.

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Has anyone gotten the UGREEN USB-C Dock model CM639 to work?

Thanks in advance.

2

The Dock works pretty well under Ubuntu Touch, sometimes graphical glitches appear but they are fixed by re-plugging the HDMI cable.