Users upgrading from Fedora 43 to 44 may encounter a "login loop" where the GNOME Display Manager (GDM) accepts the user password but immediately returns to the lockscreen. This issue typically stems from a conflict between the updated GNOME session manager and the Cloudflare WARP desktop service.
The Problem
During the login handshake, the service warp-desktop-svc.service fails to register correctly with the graphical session. Because this service is often marked as a requirement for the session, its failure triggers a crash of the entire GNOME Shell. System logs (journalctl) will frequently show the error: GdmDisplay: Session never registered, failing.
The Fix
To restore desktop access, the problematic service must be neutralized via a Virtual Console (TTY).
-
Access TTY: At the lockscreen, press Ctrl+Alt+F3 and log in with your credentials.
-
Mask the Desktop Service: Prevent the service from attempting to start with the user session:
systemctl --user mask warp-desktop-svc.service -
Disable Global Autostart: Move the global autostart file to prevent it from triggering the crash:
sudo mv /etc/xdg/autostart/com.cloudflare.WarpTaskbar.desktop ~/ -
Terminate Active Sessions: Ensure any "zombie" or manual sessions are cleared to allow GDM to start a fresh one:
sudo loginctl terminate-user $USER -
Reboot: Perform a full system restart.
Result
Following these steps, the graphical login should function normally. While the GUI taskbar icon is disabled, the core VPN functionality remains fully accessible through the terminal using warp-cli connect.