Am 08.10.19 um 13:57 schrieb Kees Bakker:
I already tried that with another system. Same result: core dumped.
In that case, I would like to ask you to do fresh installs of Ubuntu 18.04 with X2GoServer and X2GoClient somewhere (say, two virtual machines), that aren't joined to your FreeIPA environment. Just two plain and simple basic installations. If it works there, then it's likely to be an issue with your particular setup.
Also, did you try if using a different session type makes a difference? Say, a Desktop session of XFCE or MATE, or a single application LibreOffice session, ... Given your error message, it seems unlikely, but it's a quick check compared to the effort two new installs require.
-Stefan
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