Advanced users • Re: RaspiOS Trixie KRDP server displaying white screen on Remmina/KRDC client

A bit more from google based on the logs I pasted above

The string org.kde.krdp: rdpgfx_capversion indicates the RDP graphics capability exchange logs from KDE's remote desktop server (krdp), showing which protocol version and hardware/software encoding options (like H.264/AVC or YUV420) your RDP client supports.

Capability Negotiation: krdp lists capabilities like RDPGFX_CAPVERSION_8 up to RDPGFX_CAPVERSION_107 to find a matching feature set with the connecting client.
> I got it working from Windows RDP with RDPGFX_CAPVERSION_106

AVC / YUV420 Flags: Lines showing AVC: true/false and YUV420: true/false reveal if H.264 video streaming is enabled and functional between the host and client.

Common Issues: If a client connects and immediately shows a black or white screen, it is often due to a mismatch in rdpgfx caps or missing codec packages (like libx264 or specific YUV formats) on the host.

I will make more tests with Remmina and see if I can find a setting that is compatible with the capability negociation.

Then I will try to investigate why the keyboard is not working from Windows RDP client.

Statistics: Posted by dwam — Sun Aug 02, 2026 7:10 pm

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