[X2Go-User] Intermittent problems reconnecting to X2Go server

Daniel Lindgren bd.dali at gmail.com
Sat Sep 27 17:06:53 CEST 2014


Hi Mike,

I now use 4.0.1.16 and the problem seems to remain, with different messages
in the debug log.

On the client side I still get this message:

channel 1: open failed: connect failed: Connection refused

During an unsuccesful reconnect there is a message from x2gormforward on
the server side that I haven't seen before, about terminating SSHD:

Sep 27 16:53:33 servername /usr/bin/x2golistsessions[3571]:
x2golistsessions has been called with no option
Sep 27 16:53:34 servername /usr/lib/x2go/x2gogetagent[3598]: db_getagent
called, session ID: username-50-1411739336; return value: 21707
Sep 27 16:53:34 servername /usr/lib/x2go/x2gormforward[3609]: Terminating
SSHD process: 0

A succesful reconnect a few seconds later:

Sep 27 16:53:39 servername /usr/bin/x2golistsessions[3663]:
x2golistsessions has been called with no option
Sep 27 16:53:40 servername /usr/lib/x2go/x2gogetagent[3697]: db_getagent
called, session ID: username-50-1411739336; return value: 21707
Sep 27 16:53:40 servername /usr/bin/x2golistsessions[3716]:
x2golistsessions has been called with no option
Sep 27 16:53:40 servername /usr/bin/x2goresume-session: old ports: 30201,
30202, 30203
Sep 27 16:53:40 servername /usr/lib/x2go/x2gogetports[3751]: db_getports
called, server: servername; return value: |30201| |30202| |30203|
Sep 27 16:53:40 servername /usr/lib/x2go/x2goresume[3829]: db_resume
called, session ID: username-50-1411739336, client: 192.168.100.121,
gr_port: 30201, sound_port: 30202, fs_port: 30203

Version info from the server:

ii  libnx-x11
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        nx-X11
ii  libxcomp3
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        NX X
compression library
ii  libxcompext3
 2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        NX X11
protocol compression extensions library
ii  libxcompshad3
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        NX shadowing
library
ii  nxagent
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        NX agent
ii  nxproxy
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 amd64        NX proxy
ii  x2goagent
2:3.5.0.27-0x2go1+git20140701.511+jessie.main.1 all          X2Go agent
ii  x2goclient                            4.0.2.1-1
              amd64        X2Go Client application (Qt4)
ii  x2goserver
 4.0.1.16-0x2go1+git20140926.935+jessie.main.1   amd64        X2Go server
daemon scripts
ii  x2goserver-extensions
4.0.1.16-0x2go1+git20140926.935+jessie.main.1   all          X2Go server
daemon scripts (extensions)
ii  x2goserver-xsession
4.0.1.16-0x2go1+git20140926.935+jessie.main.1   all          X2Go server
daemon scripts (Xsession runner)


Cheers,
Daniel

2014-09-15 8:20 GMT+02:00 Daniel Lindgren <bd.dali at gmail.com>:

> Hi Mike,
>
> I'm using this version: 4.0.1.15-0x2go1+git20140615.847+jessie.main.1.
>
> Cheers,
> Daniel
>
> 2014-09-14 21:38 GMT+02:00 Mike Gabriel <mike.gabriel at das-netzwerkteam.de>
> :
>
>> Hi Daniel,
>>
>>
>> On  So 14 Sep 2014 16:37:29 CEST, Daniel Lindgren wrote:
>>
>>  Hi.
>>>
>>> When I try to reconnect to a X2Go session it sometimes fails, if I use
>>> x2goclient-cli I can see this error message on the client side:
>>>
>>> channel 1: open failed: connect failed: Connection refused
>>>
>>> I've have experienced this problem for a long time (years), but haven't
>>> reported it because I haven't found a way to reliably reproduce it.
>>>
>>> I did some troubleshooting yesterday and may have found a clue, this was
>>> logged in the X2Go debug log (server side) at the same time that the
>>> reconnection failed:
>>>
>>> Sep 13 18:10:03 servername /usr/bin/x2golistsessions[7748]:
>>> x2golistsessions has been called with no option
>>> Sep 13 18:10:03 servername /usr/lib/x2go/x2gogetagent[7771]: db_getagent
>>> called, session ID: username-50-1410624337; return value: 4801
>>> Sep 13 18:10:03 servername /usr/bin/x2golistsessions[7784]:
>>> x2golistsessions has been called with no option
>>> Sep 13 18:10:03 servername /usr/bin/x2goresume-session: old ports: 30201,
>>> 30202, 30203
>>> Sep 13 18:10:03 servername /usr/lib/x2go/x2gogetports[7817]: db_getports
>>> called, server: servername; return value: |30201| |30202| |30203|
>>> Sep 13 18:10:04 servername /usr/sbin/x2gocleansessions[4044]:
>>> username-50-1410624337: unmounting all shares
>>> Sep 13 18:10:04 servername /usr/lib/x2go/x2goresume[7896]: db_resume
>>> called, session ID: username-50-1410624337, client: 192.168.100.121,
>>> gr_port: 30201, sound_port: 30202, fs_port: 30203
>>> Sep 13 18:10:04 servername /usr/bin/x2goumount-session[7918]:
>>> db_getdisplay
>>> called, session ID: username-50-1410624337; return value: 50
>>> Sep 13 18:10:04 servername /usr/bin/x2goumount-session[7918]:
>>> db_getmounts
>>> called, session ID: username-50-1410624337; return value:
>>> Sep 13 18:10:04 servername /usr/lib/x2go/x2gogetagent[7996]: db_getagent
>>> called, session ID: username-50-1410624337; return value: 4801
>>> Sep 13 18:10:05 servername /usr/lib/x2go/x2gochangestatus[8126]:
>>> db_changestatus called, session ID: username-50-1410624337, new status:
>>> Sx2gocleansessions
>>> Sep 13 18:10:05 servername /usr/bin/x2goumount-session[8134]:
>>> db_getdisplay
>>> called, session ID: username-50-1410624337; return value: 50
>>> Sep 13 18:10:05 servername /usr/bin/x2goumount-session[8134]:
>>> db_getmounts
>>> called, session ID: username-50-1410624337; return value:
>>> Sep 13 18:10:05 servername /usr/sbin/x2gocleansessions[4044]:
>>> username-50-1410624337 was found running and has now been suspended
>>>
>>> It looks to me like it could be a conflict between x2goresume-session and
>>> x2gocleansessions? While the session is being resumed, it gets cleaned up
>>> and suspended?
>>>
>>> Cheers,
>>> Daniel
>>>
>>
>> What X2Go Server version are you using? This is a know issue in X2Go
>> Server <= 4.0.1.15.
>>
>> I am about to release 4.0.1.16 which should solve the issue.
>>
>> Mike
>>
>> --
>>
>> DAS-NETZWERKTEAM
>> mike gabriel, herweg 7, 24357 fleckeby
>> fon: +49 (1520) 1976 148
>>
>> GnuPG Key ID 0x25771B31
>> mail: mike.gabriel at das-netzwerkteam.de, http://das-netzwerkteam.de
>>
>> freeBusy:
>> https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-
>> netzwerkteam.de.xfb
>>
>
>
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