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It's been addressed here GDM3 does not start in Ubuntu 18.04 but none of the solutions proposed worked for me (and the topic is about 18.04).

I have disabled wayland as proposed, but did not solve the problem.

If i connect thru SSH and sudo systemctl start gdm it will work and start gdm. But if i boot the system, it just gives a blank (black) screen.

sudo systemctl enable gdm does not work. It gives a comprehensive message that it's not the correct way to enable this service.

How can I re-enable gdm?

Have also tried to uninstall and then install it again (the gdm package) - did not work.

slava
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Thiago Sayão
  • 385

1 Answers1

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Try this command to choose a login manager:

sudo dpkg-reconfigure gdm3

You should be able to select gdm3.

Dominik K
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