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Background:

I use VNC alot. I VNC to a lot of my other machines (VNC viewer).
That is on THIS machine.

I want to try some new software and didn't want to do it on THIS machine. I have another NUC (Ubuntu) and so I thought I would use it. It was running 18.04 and a lot of other OLD software which I needed to update too.

So I though I would bring it up to date then update the other software. That was a long journey, but it worked.

Other software updated.
Looking great. But I couldn't VNC to it.

Bit of digging:
Wayland and VNC are NOT COMPATIBLE! Which is probably why I don't have it on THIS machine.

Annoying I wasn't asked if I wanted it or not when updating.

Found an article how to disable Wayland

1 file, 1 line. Edit that line, remove the #. Did it. Rebooted.

System error, contact sysadmin.

Help. I'm guessing I need a USB-BOOT (with a version of Ubuntu) on it, boot, log into the SSD in the NUC, edit the file, then reboot.

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    Ubuntu 18.04 LTS reached End of Standard Support last year, and is thus off-topic on this site. You can use ESM/Pro support options (cost maybe involved) if you wish but community support (such as this site) no longer exists, though SE Unix & Linux allow all Ubuntu questions too. Please see askubuntu.com/help/on-topic or Canonical who provide ESM/Pro services.
    – guiverc
    Commented 9 hours ago
  • The only release you mention is off-topic on this site due to EOL or EOSS status (it's EOL or EOSS depending on architecture, or details you didn't provide - though both EOL & EOSS are off-topic here so that is moot). Canonical still support 18.04, but Ubuntu support ended as already stated...
    – guiverc
    Commented 9 hours ago
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    You can just boot into a X session at the login screen. No need to remove anything. Commented 8 hours ago

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