The logs from one of the previous mails show a crashing nxagent. Which is a bug. Please run gdb against the coredump in the mentioned abrt directory and post the output of gdb's bt command . We can then see where it crashes.

Uli

Brian Lam <blam314159@gmail.com> schrieb am Fr., 24. Aug. 2018, 06:33:

After running the command and cleaning /var/lib/x2go, I'm getting a completely different message

Any suggestions?   Thanks.

- Eric

On Thu, Aug 23, 2018 at 7:32 PM Paul Borowicz <paul@borowicz.org> wrote:

Try running 'sudo pkill -u user'.  After making sure the folders are cleaned.

Also delete files in /var/lib/x2go/

But not the directory itself.

On Thu, Aug 23, 2018, 10:11 PM Brian Lam <blam314159@gmail.com> wrote:

Hi Paul,

Still have the same problem after I delete .x2go and cleans up /tmp

From /var/log/messages -

Aug 23 18:11:21 pleth01 /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="/usr/bin/gnome-session"

Aug 23 18:11:21 pleth01 /usr/bin/x2goruncommand: dbus wrapper available as /bin/dbus-run-session

Aug 23 18:11:24 pleth01 /usr/bin/x2gosetkeyboard: Setting X keyboard according to /home/eminami/.x2go/C-eminami-52-1535062277_stDGNOME_dp32/keyboard

Aug 23 18:11:26 pleth01 abrtd: Directory 'ccpp-2018-08-23-18:11:26-999' creation detected

Aug 23 18:11:26 pleth01 abrt[1437]: Saved core dump of pid 999 (/usr/bin/nxagent) to /var/spool/abrt/ccpp-2018-08-23-18:11:26-999 (11898880 bytes)

Aug 23 18:11:26 pleth01 abrtd: Package 'nxagent' isn't signed with proper key

Aug 23 18:11:26 pleth01 abrtd: 'post-create' on '/var/spool/abrt/ccpp-2018-08-23-18:11:26-999' exited with 1

Aug 23 18:11:26 pleth01 abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2018-08-23-18:11:26-999'

Any other suggestions?  Thanks for your help.

- blam

On Thu, Aug 23, 2018 at 6:00 PM Paul Borowicz <paul@borowicz.org> wrote:

I usually see this when there are stuck session files. Make sure you don't have any processes running for that user.

Clean out ~/.x2go. You may also have to delete some stuff in /tmp.

Paul

On Thu, Aug 23, 2018, 5:10 PM Brian Lam <blam314159@gmail.com> wrote:

Hello,

I have been having intermittent problems with getting into x2go on RH6 machine.  Recently, after update of x2go server and client, I am not having any success in connecting.   I saw the same message before but I was able to connect after I tried multiple times (usually success rate about 10%).  

The message is -

X2Go - 52

The connection with the remove server was shut down.  Please check the state of your network connections.

I updated x2go server with version 4.1.0.0 using yum

    Updated x2goserver-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64            @x2go-release-epel

    Update             4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64            @x2go-release-epel

    Updated x2goserver-common-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64     @x2go-release-epel

    Update                    4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64     @x2go-release-epel

    Updated x2goserver-extensions-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64 @x2go-release-epel

    Update                        4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64 @x2go-release-epel

    Updated x2goserver-x2goagent-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64  @x2go-release-epel

    Update                       4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64  @x2go-release-epel

    Updated x2goserver-xsession-4.1.0.0-0.0x2go1.1.git20180302.1517.main.el6.x86_64   @x2go-release-epel

    Update                      4.1.0.2-0.0x2go1.1.git20180801.1642.main.el6.x86_64   @x2go-release-epel

The client is running on Windows 10.   Version is 4.1.2.0.

The windows pop up for 1 or 2 seconds before closing with the error message.   In my home directory, I see a dumped core.* and .xsessions error

> more .xsession-x2go-pleth01.plethrontech.com-errors

XSession-x2go: X session started for eminami at Thu Aug 23 12:39:34 EDT 2018

** (gnome-session:12939): WARNING **: Cannot open display:

In my /var/log/messages -

Aug 23 12:39:31 pleth01 /usr/bin/x2gostartagent: successfully started X2Go Agent session with ID eminami-52-1535042370_stDGNOME_dp32

Aug 23 12:39:34 pleth01 /usr/bin/x2goserver-run-extensions: /usr/lib64/x2go/extensions/pre-runcommand.d/005_GNOME-monitors-xml-ignore (x2goserver-run-extensions) for session eminami-52-1535042370_stDGNOME_dp32 returned a non-zero exit code, continuing...

Aug 23 12:39:34 pleth01 /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="/usr/bin/gnome-session"

Aug 23 12:39:34 pleth01 /usr/bin/x2goruncommand: dbus wrapper available as /bin/dbus-run-session

Aug 23 12:39:37 pleth01 /usr/bin/x2gosetkeyboard: Setting X keyboard according to /home/eminami/.x2go/C-eminami-52-1535042370_stDGNOME_dp32/keyboard

Aug 23 12:39:39 pleth01 abrt[12896]: Saved core dump of pid 12432 (/usr/bin/nxagent) to /var/spool/abrt/ccpp-2018-08-23-12:39:38-12432 (11898880 bytes)

Aug 23 12:39:39 pleth01 abrtd: Directory 'ccpp-2018-08-23-12:39:38-12432' creation detected

Aug 23 12:39:39 pleth01 abrtd: Package 'nxagent' isn't signed with proper key

Aug 23 12:39:39 pleth01 abrtd: 'post-create' on '/var/spool/abrt/ccpp-2018-08-23-12:39:38-12432' exited with 1

Aug 23 12:39:39 pleth01 abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2018-08-23-12:39:38-12432'

The Linux server (remote headless server) -

>  cat /etc/redhat-release

Red Hat Enterprise Linux Server release 6.10 (Santiago)

> uname -a

Linux  blam01.blamtech.com 2.6.32-754.el6.x86_64 #1 SMP Thu May 24 18:18:25 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux

I can login to the server using putty with ssh connection.   Any suggetions/help will be greatly appreciated.  

Thanks.

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