[X2Go-User] Log-in problem after NVIDIA card update

[Ulrich Sibiller]

You seem to be missing a libX11 link to libNX_X11. Please run ldd
/usr/bin/nxagent and post the result.

Uli

Alec Bayo <alec.bayo at gmail.com> schrieb am Mo., 20. Aug. 2018, 19:48:

> Hi all,
>
> Asking for help please troubleshooting an issue with x2go.
>
> Inbound connections stopped working after I updated the kernel and nvidia
> drivers on my centos workstation (the x2go server).
>
> On the client, the error message says "Connection failed. Failed to start
> X2Go Agent session with ID account-_____. X2Go Agent terminated
> unexpectedly. Aborting session startup."
>
> [If I attempt a connecion again the client shows a previous apparently
> pre-existing connection, but I cannot resume it.]
>
> On the server, the session log says "Error: Aborting session with 'Unable
> to open display 'nx/nx,options=...". I have attempted uninstalling and
> reinstalling x2goserver from epel.
>
> This symptoms are similar to an issue Mihai Moldovan resolved for Qianqian
> Fang in April:
> https://www.mail-archive.com/x2go-user@lists.x2go.org/msg02809.html
>
> However, I do not have the offending line set in LD_LIBRARY_PATH which
> solved the issue for Qianqian.
>
> #Contents of LD_LIBRARY_PATH (this is from env after ssh-in).
>
>
> LD_LIBRARY_PATH=/usr/local/cuda/lib64:/home/[...]/caffe/distribute/lib/::/usr/lib:/usr/lib/python2.7
>
>
> I also attempted commenting out this setting from .bashrc, and that did
> not fix it.
>
> I've copied below answers to some questions Mihai asked Qianqian. The only
> strange thing I noticed is that Mihai asked for the contents of
> /usr/lib64/nx/X11 , and this is empty. The library Qianqian listed in there
> is located at /usr/lib64 on my server.
>
> Some more details below, answering questions that were made on this
> earlier, similar troubleshooting request.
>
> Best regards, thanks for any help,
> Ale
>
>
> # Please make sure that nx-libs 3.5.99.16 is installed on the server side:
>
> Package nx-libs-3.5.99.16-1.el7.x86_64 already installed and latest version
>
>
> # Client up to date:
>
> x2goclient is already the newest version (4.1.1.1-2).
>
>
>  # Perhaps this is useful, these lines are also from env:
>
> QTDIR=/usr/lib64/qt-3.3
> QTINC=/usr/lib64/qt-3.3/include
> SSH_TTY=/dev/pts/1
> QT_GRAPHICSSYSTEM_CHECKED=1
> QTLIB=/usr/lib64/qt-3.3/lib
> QT_PLUGIN_PATH=/usr/lib64/kde4/plugins:/usr/lib/kde4/plugins
>
>
>
> # Contents of /usr/lib64/nx/X11
>
> $ ls /usr/lib64/nx
> bin  X11
>
> $ ls -lah  /usr/lib64/nx/X11
> total 0
> drwxr-xr-x. 2 root root  6 Aug 18 14:28 .
> drwxr-xr-x. 4 root root 26 Aug 18 14:28 ..
>
> $ ls -lah  /usr/lib64/nx/bin
> total 0
> drwxr-xr-x. 2 root root 36 Aug 17 21:28 .
> drwxr-xr-x. 4 root root 26 Aug 18 14:28 ..
> lrwxrwxrwx. 1 root root 16 Aug 17 16:09 nxagent -> /usr/bin/nxagent
> lrwxrwxrwx. 1 root root  7 Aug 17 21:28 x2goagent -> nxagent
>
> $ ls -lah  /usr/bin/nxagent
> -rwxr-xr-x. 1 root root 4.5M Jul 18 17:47 /usr/bin/nxagent
>
>
> # Where I found the related libraries
>
> $ ls -lah /usr/lib64/*NX*
>
> lrwxrwxrwx. 1 root root   18 Aug 18 14:15 /usr/lib64/libNX_X11.so.6 ->
> libNX_X11.so.6.3.0
> -rwxr-xr-x. 1 root root 1.3M Jul 18 17:47 /usr/lib64/libNX_X11.so.6.3.0
>
>
>
>
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> x2go-user at lists.x2go.org
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