Hi,
You said you upgraded from 14.1 to 14.2.
Have you dealt with .new files in /etc?
What version of Xfce have you been running on 14.1?
Was it stock 4.10 or Robby's 4.12?
There might be some changes in the .xinit / .xsession files that you have missed.
Those files are located in in $HOME.
But I might be wrong on that
First of all, try setting up another user account and see how it works from there.
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Best regards,
Andrzej Telszewski