I’ve been testing 25.10 for a few weeks now. It boots, but the login screen always hangs.
I can simply Alt+F2, then do sudo service gdm restart and this fixes the issue for me. But I have to do it every single time.
All updates are installed, twice a day (once in the morning, once in the afternoon).
Created a bug report here: Bug #2119612 “GDM freeze” : Bugs : xorg package : Ubuntu