xfce No Mouse Pointer at Log-In Screen

[ellanios82]

  Hello List ,

  with openSUSE Tumbleweed : Several times recently there is No 
Mouse-Pointer at xfce lightdm Log-In Screen.

- sometimes xfce has frozen my desktop system , at  "xfsettingsd" : 
necessitating Power-Off .
........

update : i thought troubles had gone away , but now they are
repeating again

  . . . have a suspicion that perhaps the log-out option to
"Save session for future logins" may play a role?

...........

  regards