After lots of testing and troubleshooting, i managed to fix my problem. Maybe it helps others also.
I installed systemd-sysv package, and that in process requested to remove sysvinit-core. I suspect, that it is dependencies problem, or missing actions in postinstall scripts or something.
root cause is dbus is not started with --systemd-activation flags, and systemd cannot register with dbus infrastructure. for example "systemctl" command then return "Unknown error -1", cannot contact D-Bus.
Debian installation itself should be systemd aware, but it is broken, and that causes XFCE desktop to be unusable.
This should be checked when upgrading wheezy to jessie in future. Gatis -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
