Fedora: System hangs after upgrade to FC18 (“started gdm”)

Question

I've been upgrading my eee laptop from Fedora 17 to 18. After a reboot the system shows up the boot message

[  OK  ] Started GNOME Display Manager.

and does not go on any further.

The system is alive, I can logon via ssh.

Any suggestions how to fix or debug this issue any further?

Thank you

Chris

[xxx@eee X11]$  lspci |grep VGA
00:02.0 VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/

Answer 1

Well, in my case the start of the polkit service failed.

A reinstall of this service made my system work:

yum reinstall polkit

Found it on http://ekuric.wordpress.com/2012/11/10/upgrade-to-fedora-18-aka-spherical-cow/#comment-135

Answer 2

Try as root user (or use sudo):

yum distro-sync