Good question.  I don't know if anyone has tried that with LDAP.  My
guess would be that the problem is that the TurboVNC service is starting
prior to the LDAP service.  If it were an init.d system, I could tell
you how to change the service order, but I'm not sure how to do that
with systemd.  I would have to Google it, which you can do just as easily.

On 5/12/18 4:30 PM, torsten wrote:
> Yes, indeed, on the host I login via LDAP. The owner - my employer -
> insists on doing so. So, what can I do now to get tvncserver starting at
> boot time?
> 
> Am Samstag, 12. Mai 2018 22:28:34 UTC+2 schrieb DRC:
> 
>     No clue, unless maybe you are using some sort of network login such
>     as LDAP.
> 
>     On 5/12/18 11:25 AM, torsten wrote:
>>     Hi,
>>
>>     I just read, that my entry in /etc/passwd must be missing. And
>>     that's right, there isn't any line with "torsten" in /etc/passwd.
>>     But I'm a legal user and actually logged in on that host. When I
>>     try "sudo adduser torsten", I get this:
>>
>>     adduser: Der Benutzer »torsten« existiert bereits.
>>
>>     In English: "adduser: The user »torsten« already exists." What
>>     goes wrong here?
>>
>>     Kind Regards
>>     Torsten
>>
>>     Am Samstag, 12. Mai 2018 16:30:12 UTC+2 schrieb torsten:
>>
>>         Hi again,
>>
>>         I just rebooted a second time, and now "sudo systemctl status
>>         tvncserver" writes something other:
>>
>>         ● tvncserver.service - LSB: Starts and stops the TurboVNC Server
>>            Loaded: loaded (/etc/init.d/tvncserver; bad; vendor preset:
>>         enabled)
>>            Active: active (exited) since Sa 2018-05-12 16:12:09 CEST;
>>         1min 27s ago
>>              Docs: man:systemd-sysv-generator(8)
>>           Process: 956 ExecStart=/etc/init.d/tvncserver start
>>         (code=exited, status=0/SUCCESS)
>>
>>         Mai 12 16:12:09 ws-torsten systemd[1]: Starting LSB: Starts
>>         and stops the TurboVNC Server...
>>         Mai 12 16:12:09 ws-torsten su[1109]: No passwd entry for user
>>         'torsten'
>>         Mai 12 16:12:09 ws-torsten su[1109]: FAILED su for torsten by root
>>         Mai 12 16:12:09 ws-torsten su[1109]: - ??? root:torsten
>>         Mai 12 16:12:09 ws-torsten tvncserver[956]: Starting TurboVNC
>>         server: 1:torsten  * [FAILED]
>>         Mai 12 16:12:09 ws-torsten systemd[1]: Started LSB: Starts and
>>         stops the TurboVNC Server.
>>
>>         I configured a password when installing TurboVNC on the host
>>         and thought, that this will be used by the start by systemd
>>         too. How do I have to configure the password now?
>>
>>         Kind Regards
>>         Torsten
>>
>>
>>         Am Samstag, 12. Mai 2018 16:01:58 UTC+2 schrieb torsten:
>>
>>             Hi,
>>
>>             here ist what "sudo systemctl status tvncserver" writes:
>>
>>             ● tvncserver.service - LSB: Starts and stops the TurboVNC
>>             Server
>>                Loaded: loaded (/etc/init.d/tvncserver; bad; vendor
>>             preset: enabled)
>>                Active: active (exited) since Sa 2018-05-12 13:55:43
>>             CEST; 1h 26min ago
>>                  Docs: man:systemd-sysv-generator(8)
>>
>>             Mai 12 13:55:43 ws-torsten systemd[1]: Starting LSB:
>>             Starts and stops the TurboVNC Server...
>>             Mai 12 13:55:43 ws-torsten tvncserver[878]: Starting
>>             TurboVNC server: 1:torsten  * [FAILED]
>>             Mai 12 13:55:43 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:03:26 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:05:15 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:08:23 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:19:08 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:26:19 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>             Mai 12 14:29:24 ws-torsten systemd[1]: Started LSB: Starts
>>             and stops the TurboVNC Server.
>>
>>             The line with "[FAILED]" appeared directly after the
>>             reboot. All subsequent lines followed when trying a manual
>>             start through systemctl. Are there any log files or other
>>             sources giving infos, why it's failing? I googled this
>>             issue without any success.
>>
>>
>>             Am Samstag, 12. Mai 2018 15:04:34 UTC+2 schrieb DRC:
>>
>>                 I have no idea.  I just tried it with an Ubuntu 16
>>                 virtual machine, and
>>                 it worked.
>>
>>                 On 5/12/18 7:41 AM, torsten wrote:
>>                 > Hi DRC,
>>                 >
>>                 > I did this. And once (before rebooting) it worked.
>>                 But after reboot it
>>                 > doesn't work anymore. Also the manual start by "sudo
>>                 systemctl start
>>                 > tvncserver" doesn't work now (it did before
>>                 rebooting!).
>>                 > "/opt/TurboVNC/bin/vncserver -list" displays no X
>>                 display and no process
>>                 > id. There is no Xvnc process too. Only the start by
>>                 > "/opt/TurboVNC/bin/vncserver" works as before.
>>                 >
>>                 > Could you say, what I'm doing wrong?
>>                 >
>>                 > Kind Regards
>>                 > Torsten
>>                 >
>>                 > Am Freitag, 11. Mai 2018 05:20:18 UTC+2 schrieb DRC:
>>                 >
>>                 >     Edit /etc/sysconfig/tvncservers and specify the
>>                 TurboVNC Server
>>                 >     instances you want to start, as well as their
>>                 associated display
>>                 >     numbers, user accounts, and command-line
>>                 arguments.  Then do
>>                 >
>>                 >     sudo systemctl enable tvncserver
>>                 >     sudo systemctl start tvncserver
>>                 >
>>                 >     On 5/10/18 4:02 PM, torsten wrote:
>>                 >     > Hi,
>>                 >     >
>>                 >     > I tried to start "/opt/TurboVNC/bin/vncserver"
>>                 automatically at boot
>>                 >     > time by a systemd unit (OS is Ubuntu 16.04). I
>>                 used these
>>                 >     instructions:
>>                 >     >
>>                 >     > https://wiki.ubuntuusers.de/systemd/Units/
>>                 <https://wiki.ubuntuusers.de/systemd/Units/>
>>                 >     <https://wiki.ubuntuusers.de/systemd/Units/
>>                 <https://wiki.ubuntuusers.de/systemd/Units/>>
>>                 >     >
>>                 https://wiki.ubuntuusers.de/systemd/Service_Units/
>>                 <https://wiki.ubuntuusers.de/systemd/Service_Units/>
>>                 >    
>>                 <https://wiki.ubuntuusers.de/systemd/Service_Units/
>>                 <https://wiki.ubuntuusers.de/systemd/Service_Units/>>
>>                 >     > https://wiki.ubuntuusers.de/systemd/systemctl/
>>                 <https://wiki.ubuntuusers.de/systemd/systemctl/>
>>                 >     <https://wiki.ubuntuusers.de/systemd/systemctl/
>>                 <https://wiki.ubuntuusers.de/systemd/systemctl/>>
>>                 >     >
>>                 >     > This is the content of my service unit file:
>>                 >     >
>>                 >     > [Unit]
>>                 >     > Description=TurboVNC-Server
>>                 >     >
>>                 >     > [Service]
>>                 >     > Type=simple
>>                 >     > User=torsten
>>                 >     > Group=users
>>                 >     > WorkingDirectory=~
>>                 >     > ExecStart=/opt/TurboVNC/bin/vncserver
>>                 >     >
>>                 >     > [Install]
>>                 >     > WantedBy=multi-user.target
>>                 >     >
>>                 >     > When I start "/opt/TurboVNC/bin/vncserver"
>>                 manually,
>>                 >     > "/opt/TurboVNC/bin/vncserver -list" writes this:
>>                 >     >
>>                 >     > TurboVNC server sessions:
>>                 >     >
>>                 >     > X DISPLAY #     PROCESS ID
>>                 >     > :1              14184
>>                 >     >
>>                 >     > The displayed process id represents the Xvnc
>>                 process created by
>>                 >     > vncserver, which is the X server used to
>>                 display the TurboVNC
>>                 >     session.
>>                 >     >
>>                 >     > When I kill this server using
>>                 "/opt/TurboVNC/bin/vncserver -kill
>>                 >     :1" and
>>                 >     > start the above service unit using systemctl,
>>                 >     > "/opt/TurboVNC/bin/vncserver -list" writes the
>>                 same (only the
>>                 >     prosess id
>>                 >     > differs), but a process with the new process
>>                 id doesn't exist (and
>>                 >     the
>>                 >     > TurboVNC Viewer fails to connect). I compared
>>                 the log files
>>                 >     written by
>>                 >     > both vncserver calls. They are completely
>>                 identical (only the time
>>                 >     > stamps differ). So where is the Xvnc process
>>                 gone when started
>>                 >     through
>>                 >     > systemd? Is there a way to get more log file
>>                 content, that could tell
>>                 >     > me, why Xvnc won't run? If needed I can give
>>                 some more detailed
>>                 >     infos.
>>                 >     >
>>                 >     > Kind Regards
>>                 >     > Torsten
>>                 >
>>
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