[xubuntu-users] Error message after each login

[Urs Thuermann]

On xubuntu 20.04, each time reproducably I login with lightdm into my
xfce desktop I get a pop-up window with the error message

        System program problem detected
        Do you want to report the problem now?

        <Cancel>  <Report problem...>

I have chosen "Report problem" several times but it seems I cannot get
any information about the problem to investigate myself.  I.e which
program has a problem, what exactly went wrong, and so on.  Also, in
/var/log I cannot find any hint what the problem was.

BTW, this also occurs when I logout and in again, but not when the
screen is locked and I unlock it again from lightdm.

urs