Greeter recovery

Diagnose sysc-greet

Keep a working TTY login before changing the greeter. The source installer writes system-level greetd configuration and enables greetd.service. It can also replace the display-manager.service link.

From a TTY or another administrator session, inspect the service, boot log and config:

sudo systemctl --no-pager status greetd.service
sudo journalctl -u greetd.service -b --no-pager
sudo sed -n '1,160p' /etc/greetd/config.toml
sudo ls -l /etc/greetd/config.toml*

Check that the configured greeter account and compositor command exist. Redact usernames, host paths and other private details before sharing logs.

If the installer saved a prior config and you want to restore it, first read both files from the TTY. Then copy the backup over the active config:

sudo cp -a /etc/greetd/config.toml.bak /etc/greetd/config.toml

The source installer's Uninstall option disables greetd and removes sysc-greet files, but does not restore that config or the previous display-manager.service link. Follow your distribution's display-manager recovery instructions and keep the TTY open until you have confirmed a working login.

Do not restart greetd from the only usable graphical or shell session. A restart can end the session that would have let you repair the config. See sysc-greet install and rollback.