[X2Go-User] Problem with x2go - the connection with the remote server was shut down

[Brian Lam]

I attached the gdb output from my xterm attempt.   Thanks.

On Fri, Aug 24, 2018 at 1:11 PM Brian Lam <blam314159 at gmail.com> wrote:

> This is messages I get in /var/log/messages when I try to open a terminal.
>
> Aug 24 12:10:50 pleth01 /usr/bin/x2gostartagent: successfully started X2Go
> Agent session with ID eminami-56-1535127048_stRTERMINAL_dp32
> Aug 24 12:10:55 pleth01 /usr/bin/x2gosetkeyboard: Setting X keyboard
> according to
> /home/eminami/.x2go/C-eminami-56-1535127048_stRTERMINAL_dp32/keyboard
> Aug 24 12:10:56 pleth01 abrt[12264]: Saved core dump of pid 12015
> (/usr/bin/nxagent) to /var/spool/abrt/ccpp-2018-08-24-12:10:55-12015
> (28737536 bytes)
> Aug 24 12:10:56 pleth01 abrtd: Directory 'ccpp-2018-08-24-12:10:55-12015'
> creation detected
> Aug 24 12:10:56 pleth01 abrtd: Package 'nxagent' isn't signed with proper
> key
> Aug 24 12:10:56 pleth01 abrtd: 'post-create' on
> '/var/spool/abrt/ccpp-2018-08-24-12:10:55-12015' exited with 1
> Aug 24 12:10:56 pleth01 abrtd: Deleting problem directory
> '/var/spool/abrt/ccpp-2018-08-24-12:10:55-12015'
>
>
> Thanks.
>
>
> On Fri, Aug 24, 2018 at 12:11 PM Brian Lam <blam314159 at gmail.com> wrote:
>
>> Thanks Paul, 127.0.01 is in the /etc/hosts
>>
>> 127.0.0.1       localhost.localdomain   localhost.localdomain
>>  localhost4      localhost4.localdomain4 localhost
>> ::1     localhost.localdomain   localhost.localdomain   localhost6
>> localhost6.localdomain6 localhost
>>
>> Thanks Uli
>>
>> Unfortunately, the software I need to use do not support RHEL7 so we have
>> to stick with RHEL6.
>>
>> I tried opening terminal, but still have some problems.  I  assume
>> "single application > terminal" is the way to do this.
>>
>>
>> [image: image.png]
>>
>> [image: image.png]
>>
>> On Fri, Aug 24, 2018 at 11:43 AM Ulrich Sibiller <uli42 at gmx.de> wrote:
>>
>>> The crash happens ind XkbSendMap(). So I suspect some client in your
>>> session asking nxagent for the xkb keyboard configuration. You can
>>> look if you can disable that client. I suspect running a simple xterm
>>> via x2go will not crash the session. Can you confirm?
>>>
>>> Uli
>>>
>>> On Fri, Aug 24, 2018 at 8:40 PM, Ulrich Sibiller <uli42 at gmx.de> wrote:
>>> > On Fri, Aug 24, 2018 at 8:10 PM, Brian Lam <blam314159 at gmail.com>
>>> wrote:
>>> >> Okay so after reinstall, I'm back to square 1.
>>> >>
>>> >> But at least it helped identify a bug.  Thanks for both of your help.
>>> >>
>>> >> Unfortunately, I still need to get unstuck urgently ... deadline
>>> >> approaching.  Do you know any other system like x2go that's free or
>>> low
>>> >> cost?  I tried Xming but it's too slow to be useful. Thanks.
>>> >
>>> > You can try compiling nxagent yourself, it is not that difficult. Use
>>> > that tree: https://github.com/uli42/nx-libs.git Branch pr/xkb_1.3.0.0
>>> >
>>> > But what about RHEL7?
>>> >
>>> > Uli
>>>
>>
>>>
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[eminami at pleth01 ~]$ gdb /usr/bin/nxagent core.14170
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-92.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/nxagent...Reading symbols from /usr/lib/debug/usr/bin/nxagent.debug...done.
done.

warning: core file may not match specified executable file.
[New Thread 14170]
Reading symbols from /usr/lib64/nx/X11/libX11.so.6...Reading symbols from /usr/lib/debug/usr/lib64/libNX_X11.so.6.3.0.debug...done.
done.
Loaded symbols for /usr/lib64/nx/X11/libX11.so.6
Reading symbols from /usr/lib64/libXcomp.so.3...Reading symbols from /usr/lib/debug/usr/lib64/libXcomp.so.3.5.99.debug...done.
done.
Loaded symbols for /usr/lib64/libXcomp.so.3
Reading symbols from /usr/lib64/libXcompshad.so.3...Reading symbols from /usr/lib/debug/usr/lib64/libXcompshad.so.3.5.99.debug...done.
done.
Loaded symbols for /usr/lib64/libXcompshad.so.3
Reading symbols from /usr/lib64/libXrender.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXrender.so.1
Reading symbols from /usr/lib64/libXfixes.so.3...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXfixes.so.3
Reading symbols from /usr/lib64/libXfont.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXfont.so.1
Reading symbols from /usr/lib64/libXcomposite.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXcomposite.so.1
Reading symbols from /usr/lib64/libXinerama.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXinerama.so.1
Reading symbols from /usr/lib64/libXdmcp.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXdmcp.so.6
Reading symbols from /usr/lib64/libXext.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXext.so.6
Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libz.so.1
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /usr/lib64/libXpm.so.4...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXpm.so.4
Reading symbols from /usr/lib64/libxml2.so.2...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libxml2.so.2
Reading symbols from /usr/lib64/libpixman-1.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libpixman-1.so.0
Reading symbols from /usr/lib64/libpng12.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libpng12.so.0
Reading symbols from /usr/lib64/libjpeg.so.62...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libjpeg.so.62
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
Loaded symbols for /lib64/libpthread.so.0
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /usr/lib64/libXdamage.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXdamage.so.1
Reading symbols from /usr/lib64/libXrandr.so.2...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXrandr.so.2
Reading symbols from /usr/lib64/libXtst.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXtst.so.6
Reading symbols from /usr/lib64/libfreetype.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libfreetype.so.6
Reading symbols from /usr/lib64/libfontenc.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libfontenc.so.1
Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib64/libXi.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libXi.so.6
Reading symbols from /lib64/libnss_files.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libnss_files.so.2
Core was generated by `x2goagent -nolisten tcp -extension BIG-REQUESTS -nolisten tcp -dpi 120 -R -auth'.
Program terminated with signal 6, Aborted.
#0  0x00000038cfc32495 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install freetype-2.3.11-17.el6.x86_64 glibc-2.12-1.212.el6.x86_64 libXcomposite-0.4.3-4.el6.x86_64 libXdamage-1.1.3-4.el6.x86_64 libXdmcp-1.1.1-3.el6.x86_64 libXext-1.3.3-1.el6.x86_64 libXfixes-5.0.3-1.el6.x86_64 libXfont-1.5.1-2.el6.x86_64 libXi-1.7.8-1.el6.x86_64 libXinerama-1.1.3-2.1.el6.x86_64 libXpm-3.5.10-2.el6.x86_64 libXrandr-1.5.1-1.el6.x86_64 libXrender-0.9.10-1.el6.x86_64 libXtst-1.2.3-1.el6.x86_64 libfontenc-1.1.2-3.el6.x86_64 libgcc-4.4.7-23.el6.x86_64 libjpeg-turbo-1.2.1-3.el6_5.x86_64 libpng-1.2.49-2.el6_7.x86_64 libstdc++-4.4.7-23.el6.x86_64 libxml2-2.7.6-21.el6_8.1.x86_64 pixman-0.32.8-1.el6.x86_64 zlib-1.2.3-29.el6.x86_64
(gdb) bt
#0  0x00000038cfc32495 in raise () from /lib64/libc.so.6
#1  0x00000038cfc33c75 in abort () from /lib64/libc.so.6
#2  0x00000038cfc703a7 in __libc_message () from /lib64/libc.so.6
#3  0x00000038cfc75dee in malloc_printerr () from /lib64/libc.so.6
#4  0x00000038cfc78c80 in _int_free () from /lib64/libc.so.6
#5  0x00000000004eeefb in XkbSendMap (client=0x2498b20, xkb=0x25128e0, rep=0x7ffd0f2d4b90) at xkb.c:1345
#6  0x00000000004f51b8 in ProcXkbGetKbdByName (client=0x2498b20) at xkb.c:5368
#7  0x00000000004223ca in Dispatch () at NXdispatch.c:482
#8  0x00000000004539ea in main (argc=17, argv=0x7ffd0f2d5e58, envp=<value optimized out>) at main.c:353