I suspended my desktop machine with 24.04 yesterday and found that the lock screen did not react to input. After rebooting it failed to start up the GUI.
This is what I found in the logs:
$ journalctl --unit gdm.service --no-pager
May 31 09:34:13 za31 gdm3[3913]: Gdm: GdmSession: no session desktop files installed, aborting...
Note: I'm using the TPM-FDE installation variant.