Fedora 43 Issue; Kernel boot delay followed by kick back to login, crashes

Those 2 comments show I think that the display-manager decided to start a new session
(like a Switch User), and that the initial session has not been terminated.

It would be interesting thus to look for the display-manager logs in the journal and also in
its dedicated logs if any.

I’m unsure of what DM KDE Plasma uses at the moment. To verify that, run:

systemctl -n 0 status display-manager
 XXX.service - ...

then XXX is the name of the display-manager. Look in the journal with:

  • sudo journalctl -b -u XXX or sudo journalctl -1 b -1 -u XXX for the previous boot

@gnwiii: what do you think of using fpaste to get a whole journal where the problem
occurs ?