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Couldn't log in because the gdm3 login screen has no password field, see screenshot:

gdm3 login screen

The unability to switch from current session to the TTY3 text console (Ctrl+Alt+F4 or F3 didn't work here) forced me to restart in recovery mode in order to select lightdm instead of gdm3 using:

sudo dpkg-reconfigure lightdm

which did work fine.

I retried:

sudo dpkg-reconfigure gdm3

after having uninstalled gdm3 with:

sudo apt purge gdm3

and reinstalled with:

sudo apt install --reinstall -y gdm3

with no success. The same blank login screen is still there.

Any clue would be greatly appreciated.

P.S.: Error message on upgrade day (never seen before):
nov. 04 07:21:06 jhn gdm3[1738]: Gdm: Failed to list cached users: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.11 was not provided by any .service files

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  • I had the exact same issue, including TTY not working, and wasn't able to solve it. I didn't upgrade, I did a clean install. I'm wondering what's common between us? i9-9900K, RTX 2080Ti, 64GB RAM. Using ethernet cable. In the USB slots I had a keyboard, mouse and XBox Wireless Adapter, did you have anything extra plugged in?
    – Mendhak
    Nov 13, 2021 at 17:20
  • Laptop here, wifi, nothing plugged in. X11 instead of Wayland. Other similar cases here and apparently not any lasting solution for the moment. Maybe a next update (kernel or other) will bring the solution otherwise we'll have to wait for Ubuntu 22.04.
    – pra_esepe
    Nov 13, 2021 at 21:36
  • For your information, the installation of most recent kernel 5.15 did not solve the problem.
    – pra_esepe
    Nov 15, 2021 at 14:25

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