The bug I originally was trying to report prevented the X server from displaying anything on the screen. I am not able to reproduce that behavior after a reboot. It's possible I did not wait long enough for the display manager to start up.
That said, the reported error in the log is still present, suggesting that it is unrelated to the symptom I was originally trying to report. The severity of this bug (i.e., the one whose information is actually mentioned in the bug report) is at most minor, and perhaps should be reassigned to SDDM, since it seems to be related to properly setting up the session. Thanks, Antonio
