[X2Go-User] x2goserver issue on Ubuntu precise ...

[Sylvain Milot]

Hello everyone,

I have the following on my client when I connect to a server running
the same ubuntu precise distribution:

$ cat .x2go/S-sylvain-52-1428522297_stDXFCE_dp24/sessions 
Loop: PANIC! The remote NX proxy closed the connection.
Loop: PANIC! Failure negotiating the session in stage '7'.
Loop: PANIC! Wrong version or invalid session authentication cookie.

$ lsb_release -d
Description:    Ubuntu 12.04.5 LTS

$ dpkg -l | egrep 'x2go|nxproxy' | perl -ne '@f=split; print "$f[1]\t$f[2]\n"' | column -t
nxproxy                2:3.5.0.31-0~605~ubuntu12.04.1
x2goagent              2:3.5.0.31-0~605~ubuntu12.04.1
x2goclient             4.0.3.2-0~800~ubuntu12.04.1
x2goserver             4.0.1.19-0~1064~ubuntu12.04.1
x2goserver-extensions  4.0.1.19-0~1064~ubuntu12.04.1
x2goserver-xsession    4.0.1.19-0~1064~ubuntu12.04.1

Has anyone encountered this ? I had this working at some point and it appears
a regression may be at play on the server side.

I googled the problem and it seems to have been reported many years ago
so perhaps someone on this list can provide some quick insight?

On my ubuntu server (also 12.04.5) I have the following :

$ dpkg -l | egrep 'x2go|nxproxy' | perl -ne '@f=split; print "$f[1]\t$f[2]\n"' | column -t
nxproxy                2:3.5.0.31-0~605~ubuntu12.04.1
python-six             1.8.0-1~bpo70+1~0x2go~ubuntu12.04.1
x2goagent              2:3.5.0.31-0~605~ubuntu12.04.1
x2goclient             4.0.3.2-0~800~ubuntu12.04.1
x2goserver             4.0.1.19-0~1064~ubuntu12.04.1
x2goserver-compat      4.0.1.19-0~1064~ubuntu12.04.1
x2goserver-extensions  4.0.1.19-0~1064~ubuntu12.04.1
x2goserver-xsession    4.0.1.19-0~1064~ubuntu12.04.1

I changed loglevel=debug on the x2go server to look for clues but nothing caught
my attention. Note that with the same client (running at home) I can connect to
other servers running Debian squeeze, on the same network as the ubuntu precise
server (at work).

On my debian squeeze servers, I have this ... all works nicely here though:

$ dpkg -l | egrep 'x2go|nxproxy' | perl -ne '@f=split; print "$f[1]\t$f[2]\n"' | column -t
libnx-x11              2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
libssh-4               0.5.4-2~deb6+x2go2
libxcomp3              2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
libxcompext3           2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
libxcompshad3          2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
nxagent                2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
nxproxy                2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
rdesktop               1.7.1-0~bpo60+x2go1
x2go-keyring           2012.07.23+squeeze~main~17~build1
x2goagent              2:3.5.0.28-0x2go1+git20141113.546+squeeze.main.1
x2goclient             4.0.3.1-0x2go1+git20141127.753+squeeze.main.1
x2godesktopsharing     3.1.1.1-0x2go1+git20140401.131+squeeze.main.1
x2goserver             4.0.1.18-0x2go1+git20141006.949+squeeze.main.1
x2goserver-compat      4.0.1.18-0x2go1+git20141006.949+squeeze.main.1
x2goserver-extensions  4.0.1.18-0x2go1+git20141006.949+squeeze.main.1
x2goserver-xsession    4.0.1.18-0x2go1+git20141006.949+squeeze.main.1

Thanks in advance for any help and x2go is a great piece of software BTW!

Sylvain


---
Sylvain Milot (sylvain at bic.mni.mcgill.ca)
               (sylvain.milot at mcgill.ca)
Brain Imaging Centre
Montreal Neurological Institute
3801 University Street
Webster 2B, Room 206
Montreal, Qc., Canada, H3A 2B4
Phone  : (514) 398-4965, Fax: 398-8948
Mobile : (514) 712-1768
Office : 527 Av Des Pins O., Room 104
          Montreal, Qc., H2W 1S4