Package: x2goserver
Version: 4.1.0.4

When starting a x2go session with the server running Opensuse Tumbleweed OS I expect to get a session.

What I get is the error message: "Unknown operating system, XSession startup not implemented!"

I looked at the x2goserver source code and it checked for [ -f /etc/SUSE-brand ] || [ -f /etc/SuSE-release ]

which both are absent. I did a 'touch /etc/SuSE-release' on the server and x2go started working again.

So there should be a better detection for Opensuse Tumbleweed.

Client: 
Windows 10 
X2GoClient 4.1.2.2
Session: xfce or kde, it doesn't matter

Server:
OpenSuse Tumbleweed
x2goserver-4.1.0.4~git107+gc2182644-3.37.x86_64
x2goserver-xsession-4.1.0.4~git107+gc2182644-3.37.x86_64
nxagent-3.5.99.4~git2184+gd20cb44e8-1.6.x86_64