I'm experiencing this strange behavior which drives me crazy! Sabayon 11 amd64 runs great (is also beautiful!) from the Live DVD but once installed it keeps rebooting (sometimes even just freezing) exactly at the moment when you expect kdm to show the login dialogbox. Admitted, this is an old machine, a HP xw4400 Workstation with Intel Core2 6400 @ 2.13 GHz, 2GB memory and Quadro NVS 285, but Windows 7 (which is installed in a dualboot with Sabayon) keeps running smoothly, and, as I said, Sabayon keeps running smoothly from the Live CD.
I have tried to startx /usr/bin/kdm by first dropping to the command line but it does not start as root (I'm getting xauth errors about serverauth and Xauthority). If I try the same command as sudo-er, then I do get into X, however not kde, and the system freezes so that I have to hard reboot.
Can you please instruct me what I should look for?
Thank you in advance,