How to start KDE Plasma session remotely (via ssh)?

[piotr_dobrogost]

How can I start KDE Plasma session after logging in to the remote host via ssh?
The reason I need this is because then I want to use a tool like KRdp or RustDesk to have remote access to such a session.

Trying startplasma-wayland ends with the error:

$ startplasma-wayland
Error: could not determine $DISPLAY.
Error: Can not contact kdeinit5!
org.kde.startup: "kdeinit5_shutdown" QList() exited with code 255
startplasma-wayland: Shutting down...
startplasmacompositor: Shutting down...
startplasmacompositor: Done.

Output from `kinfo`

$ kinfo
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.13.9-200.fc41.x86_64 (64-bit)
Graphics Platform: offscreen
Processors: 12 × AMD Ryzen 5 7600 6-Core Processor
Memory: 14.8 GiB of RAM

I asked this also here How to start KDE Plasma session remotely (via ssh)? · Issue #2070 · sddm/sddm · GitHub

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Start KDE (wayland) after reboot from SSH session (not autologin) /...

Btw, could someone please create a tag plasma-session?

[jjgalvez]

I don’t believe you can. If you want to start a graphics session you have to do so from the actual device (I could be wrong but at least that has been my experience)
What I did to solve the same issue was to switch the SDDM compositor from kwin to sway so I could install wayvnc, which I access via ssh tunnel. This allows me access to SDDM via vnc, so I can log into my plasma session, I think switch to RDP to remote-desktop into the started session.

[jjgalvez]

Happy to provide the sddm conf and sway conf that I use if it’s helpful.

[piotr_dobrogost]

Thanks for replying. However interesting you did get it to work I find this is too much fiddling for my test.

I guess this must be your answer then
Start KDE (wayland) after reboot from SSH session (not autologin) / Applications & Desktop Environments / Arch Linux Forums

[jjgalvez]

yes works great,