This message appears to be coming from libssh. I am reaching out to the libssh developers for guidance.

-Mike

On Fri, May 19, 2017 at 11:09 AM, Tajammul Rafique <trcns@yahoo.com> wrote:
1. At what point do you get the message "Socker Error: Unknown error"?
I get thisInline image
 error while creating a session screen shot attached.

2. Is the message a pop-up or something?
Yes, as shown in the screen shot.

3. Assuming it happens as you are attempting to start a session, run "x2golistsessions" on the server both before and after attempting to start one. We also terminated this session and I tried my session only but that did not work either.
Attached is the out come of "x2golistsessions" before, during the attempt and after. 
1:~$ x2golistsessions ^[[A129056|aaaaaaaaaaaa-50-1495205101_stDXFCE_dp32|50|xxxxxxxxx|R|2017-05-19T14:45:01|9c5ad421c0f73828157e0fb74d5a2d45|10.39.25.54|30001|30002|2017-05-19T14:45:02|davisja|417|30003|

:~$ x2golistsessions ^[[A129056|aaaaaaaaaaaa-50-1495205101_stDXFCE_dp32|50|xxxxxxxxx1|R|2017-05-19T14:45:01|9c5ad421c0f73828157e0fb74d5a2d45|10.39.25.54|30001|30002|2017-05-19T14:45:02|davisja|417|30003|

:~$ x2golistsessions 129056|aaaaaaaaaaaa-50-1495205101_stDXFCE_dp32|50|xxxxxxxxx|R|2017-05-19T14:45:01|9c5ad421c0f73828157e0fb74d5a2d45|10.39.25.54|30001|30002|2017-05-19T14:45:02|davisja|418|30003|


4. Install and run the "debug" build with the x2goclient installer. Run the debug build from the start menu. Expand the terminal window that is opened (so that there are as few line wraps as possible.) Reproduce the bug. Before quitting, copy and paste the output of the terminal window into a .txt attachment.

x2go-INFO-1> "Starting X2Go Client..."
x2go-WARNING-1> "English language requested, not loading translator."
x2go-WARNING-1> "English language requested, not loading translator."
x2go-DEBUG-../src/onmainwindow.cpp:10108> Getting X.Org Server settings.
x2go-INFO-3> "Started X2Go Client."
x2go-DEBUG-../src/onmainwindow.cpp:518> "$HOME=C:/Users/bbbbbbb"
x2go-DEBUG-../src/onmainwindow.cpp:2279> Reading 1 sessions from config file.
x2go-DEBUG-../src/sessionbutton.cpp:341> Creating QPixmap with session icon: ":/
img/icons/128x128/x2gosession.png".
x2go-DEBUG-../src/onmainwindow.cpp:10011> Starting helper servers for Windows ..
.
x2go-DEBUG-../src/onmainwindow.cpp:10178> "/cygdrive/C/Users/rafiquta/.x2go/var"
 cygwin var path
x2go-DEBUG-../src/onmainwindow.cpp:10261> "C:/Users/bbbbbbb/.x2go/etc/sshd_conf
ig created."
x2go-DEBUG-../src/onmainwindow.cpp:9771> Resolved localhost.
x2go-DEBUG-../src/pulsemanager.cpp:232> pulse started with arguments("--exit-idl
e-time=-1", "-n", "-F", "C:\Users\rafiquta\.x2go\pulse\config.pa", "-p", "G:\Pro
gram Files (x86)\x2goclient\pulse\lib\pulse-7.1\modules", "--log-level=debug", "
--verbose", "--log-target=file:C:\Users\bbbbbbb\.x2go\pulse\pulse.log") ; waiti
ng for finish...
x2go-DEBUG-../src/pulsemanager.cpp:783>
x2go-DEBUG-../src/pulsemanager.cpp:786>
x2go-DEBUG-../src/onmainwindow.cpp:9799> Port already in use: 7022
x2go-DEBUG-../src/onmainwindow.cpp:9771> Resolved localhost.
x2go-DEBUG-../src/onmainwindow.cpp:2759> Creating QPixmap with session icon: '":
/img/icons/128x128/x2gosession.png"'.
x2go-DEBUG-../src/onmainwindow.cpp:9793> Port is free: 7023
x2go-DEBUG-../src/onmainwindow.cpp:10611> Logging cygwin sshd to: "C:/Users/xxxxxxxx
/.x2go/sshLogs/Hp9184.log"
x2go-DEBUG-../src/onmainwindow.cpp:10625> Creating desktop: x2go_xxxxxxxx
x2go-DEBUG-../src/onmainwindow.cpp:9771> Resolved localhost.
x2go-DEBUG-../src/onmainwindow.cpp:9799> Port already in use: 7023
x2go-DEBUG-../src/onmainwindow.cpp:9771> Resolved localhost.
x2go-DEBUG-../src/onmainwindow.cpp:9799> Port already in use: 7023
x2go-DEBUG-../src/onmainwindow.cpp:10722> User mode OpenSSH server started succe
ssfully.
x2go-INFO-8> "Starting connection to server: 10.39.27.220:22"
x2go-DEBUG-../src/onmainwindow.cpp:2860> Starting new ssh connection to server:"
10.39.27.220":"22" krbLogin: false
x2go-DEBUG-../src/sshmasterconnection.cpp:175> SshMasterConnection, host "10.39.
27.220"port 22user "rafiquta"useproxy falseproxyserver ""proxyport 22
x2go-DEBUG-../src/sshmasterconnection.cpp:212> Starting SSH connection without K
erberos authentication.
x2go-DEBUG-../src/sshmasterconnection.cpp:216> SshMasterConnection, instance Ssh
MasterConnection(0x32dee98)  created.
x2go-DEBUG-../src/sshmasterconnection.cpp:452> SshMasterConnection, instance Ssh
MasterConnection(0x32dee98)  entering thread.
x2go-DEBUG-../src/sshmasterconnection.cpp:488> libssh not initialized yet. Initi
alizing.
x2go-DEBUG-../src/sshmasterconnection.cpp:532> Setting SSH directory to "C:/User
s/bbbbbbb/ssh"
x2go-DEBUG-../src/sshmasterconnection.cpp:588> "Cannot connect to 10.39.27.220:2
2" - "Socket error: Unknown error"
x2go-ERROR-2> "Connection error: Cannot connect to 10.39.27.220:22: Socket error
: Unknown error"
x2go-DEBUG-../src/sshmasterconnection.cpp:718> SshMasterConnection, instance Ssh
MasterConnection(0x32dee98)  waiting for thread to finish.
x2go-DEBUG-../src/sshmasterconnection.cpp:722> SshMasterConnection, instance Ssh
MasterConnection(0x32dee98)  thread finished.
x2go-DEBUG-../src/sshmasterconnection.cpp:729> SshMasterConnection, instance Ssh
MasterConnection(0x32dee98)  finished destructor.




 
Thanks
 
Tajammul



On Friday, May 19, 2017 10:32 AM, Mike DePaulo <mikedep333@gmail.com> wrote:


I am not much for analyzing packet captures, but can you tell us:
1. At what point do you get the message "Socker Error: Unknown error"?
2. Is the message a pop-up or something?
3. Assuming it happens as you are attempting to start a session, run "x2golistsessions" on the server both before and after attempting to start one.
4. Install and run the "debug" build with the x2goclient installer. Run the debug build from the start menu. Expand the terminal window that is opened (so that there are as few line wraps as possible.) Reproduce the bug. Before quitting, copy and paste the output of the terminal window into a .txt attachment.

-Mike

On Fri, May 19, 2017 at 10:21 AM, Tajammul Rafique <trcns@yahoo.com> wrote:
I posted this question before but had no luck in finding a solution. Since last month my windows 10 computer with x2go client stopped working with Linux Ubuntu 14.4 x2go server. I tried uninstalling and reinstalling the client but it did not help. In the mean time my co-league's x2go client still works. I captured packets on my computer as attached, all I see is the connection was reset. Why and how to fix it I don't can someone please help?

Inline image
 
Thanks
 
Tajammul


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