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Help to configure XDMCP GDM Chooser on server and clients

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A really need help to configure my lab to use GUI on light workstation to connect to Server with a lot of CPU, RAM and disks...

When I was young and a student (previous century) we were using Tektronix Xterm to remote connect to server and get deported wm and X features. Before everything we had a chooser" to select on which server we wanted to logon.

I need to get exactly the same and recycle light/obsolete linux Workstation to RUN a chooser and open a session on a server with a lot of CPU, RAM and disks.

My systems are all installed with Ubuntu 22.04.1 LTS. DNS, LDAP, NTP, SSH, UFW and all infrastructure services are up and running w/o any conflicts. I can connect from any to any (from my user vlan on all component), and now I really need to configure clients and Servers to run as smoothly as possible with GUI.

Constraint: I DON'T PLAN TO USE RDP PROTOCOL NOR REMMINA, I really need to get concurrent users running on the same servers their activity (GCC, Maths, Sciences, devops) connected from light workstation without the requirement to first open a session from WS and then launch Xnest or

  • xhost +fqdn on the workstation
  • connect to servers
  • and launch command with -display 192.168.XX.YY:0.0. or
  • xhost +fqdn
  • ssh username@fqdn {command_to_execute -display 192.168.XX.YY:0.0}

So if someone can help me with configuration to set on both ends (client & servers) it will be Christmas before December 24th.

PSS: workstation will become diskless workstation in a second step (only when

I sit in a Tesla and translated this thread with Ai:

mangohost

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