X2Go Bug report logs - #912
X2Go session doesnt resume session after openvpn connection

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Subject: Bug#912: [X2Go-Dev] Bug#912: X2Go session doesnt resume session after openvpn connection
Reply-To: Stefan Baur <X2Go-ML-1@baur-itcs.de>, 912@bugs.x2go.org
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Am 31.07.2015 um 16:13 schrieb Sergey Savko:

> X2Go session doesnt resume session after openvpn connection.
> 
> nxagent 2:3.5.0.32-0x2go1+git20150704.734+jessie.main.1 nxproxy
> 2:3.5.0.32-0x2go1+git20150704.734+jessie.main.1 x2goserver
> 4.1.0.0-0x2go1.1~git20150403.1278+wheezy.heuler.1 amd64 x2goclient
> 4.0.5.0-0x2go1+git20150728.1112+jessie.main.1
> 
> Our LAN is based on OpenVPN Net-Net
> 
> server's ip is 192.168.100.1 the 1st client is 192.168.200.100 the
> 2nd is 192.168.100.100
> 
> The 1st client is connected to server with Windows X2Goclient, then
> the session goes into suspend mode. The 2nd client tries to connect
> into this session with Windows X2Goclient or Linux X2Goclient but
> it fails with message^ «Failed to restore all the required visuals.
> Can't resume the NX session on this display».
> 
> The server's log has^ nxagentInitAndCheckVisuals: New visuals don't
> match with old visuals.
> 
> If we start nxclient with debug option^ 
> x2go-DEBUG-../src/onmainwindow.cpp:10382> "Searching proxy window:
> X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:12088> "Searching window with
> title: X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:10382> "Searching proxy window:
> X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:12088> "Searching window with
> title: X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:10382> "Searching proxy window:
> X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:12088> "Searching window with
> title: X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:10382> "Searching proxy window:
> X2GO-savko-151-1438348399_stDKDE_dp32" 
> x2go-DEBUG-../src/onmainwindow.cpp:12088> "Searching window with
> title: X2GO-savko-151-1438348399_stDKDE_dp32"
> 
> The 1st client can resume the session without any problem

Are you sure that
a) both clients are on 4.0.5.0?
b) the session wasn't started with an older version of X2GoClient (for
   Windows, maybe?) and Client#1 is resuming that session?

What you're seeing would make sense if Client#1 is older than version
4.0.5.0 (especially if it is a Windows client, but I believe there may
be similar issues with Linux as well), see the release notes for
4.0.5.0, Section "Important notes on resuming sessions started from
4.0.4.0 or earlier":
http://wiki.x2go.org/doku.php/doc:release-notes-mswin:x2goclient-4.0.5.0

I guess it would further aid debugging if you could run a test where
you make sure to create new sessions on each client, suspend them,
then try to reconnect from the other side.  The results would be
interesting.
Also, please double-check the X2GoClient versions on both clients and
report back what you found, especially if they weren't the same on both.

Kind Regards,
Stefan

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