Resources

• https://stackoverflow.com/questions/20548509/forwarding-x11-without-ssh-how-do-i-run-local-apps-on-another-pc-running-x-serv/20549473#20549473
• https://github.com/mviereck/x11docker/wiki/How-to-access-X-over-TCP-IP-network
• https://askubuntu.com/questions/203173/run-application-on-local-machine-and-show-gui-on-remote-display
• https://askubuntu.com/questions/615139/how-to-make-x-org-listen-tcp-port-to-remote-connections

How to determine display manager (thing that starts Xorg)

• https://unix.stackexchange.com/questions/20370/is-there-a-simple-linux-command-that-will-tell-me-what-my-display-manager-is

Enable TCP when using GDM3 as display manager

• https://askubuntu.com/questions/672180/x-server-started-with-nolisten-tcp-in-spite-of-disallowtcp-false-in-etc-gdm

Testing X server

• https://wiki.archlinux.org/title/Xephyr

First thing that actually fucking works

• https://shlomif-tech.livejournal.com/76300.html

Trying this

After modifying /etc/gdm3/custom.conf content by adding ServerArguments=-listen tcp. I got xserver running on port 6000

[security] DisallowTCP=false

[xdmcp] ServerArguments=-listen tcp

as per https://askubuntu.com/questions/672180/x-server-started-with-nolisten-tcp-in-spite-of-disallowtcp-false-in-etc-gdm

Doesn't work

A 'real' X server might have to configure XDCMP https://help.gnome.org/admin/gdm/stable/configuration.html.en

i think XDCMP is for transferring the entire desktop to another X server we don't really want that

Might need -listen tcp added...

sudo mv /usr/lib/xorg/Xorg /usr/lib/xorg/Xorg-safe

Replace with

#!/usr/bin/env bash

/usr/lib/xorg/Xorg  -listen tcp $@

BAD things happen if you change this file boot loop without tty access

RIP https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2083310

Using lightdm now

https://users.fedoraproject.narkive.com/srD4h4Sx/how-to-make-xorg-listen-to-tcp-lightdm

lightdm --show-config