The installer pulled in virtualbox with a newer kernel and what not and after rebooting it boots into the console with mouse working.
I can manually start lightdm by logging into the console with sudo service lightdm start and that starts lightdm. Even startx works.
I looked in Mageia Control Center -> System - > Manage system services by enabling of disabling them
and its On boot is selected.
But it doesn't start on boot. I have to manually start it.
After manually starting it I can log into XFCE and everything looks okay.
Something broke the auto start at boot of lightdm when virtualbox was installed.
I de-installed virtualbox and all other newer kernel stuff but it still not starts lightdm at boot

And it keeps saying in MCC that it is enabled at start at boot.
Anybody got a clue how to fix this?