I installed my new computer today with 11.10 (i5-2500K, ASUS P8Z68-V LX, using the onboard graphic processor).
After updating everything went fine but then I tried to go to StandBy-mode.
This crashed the computer so I had to cold-reset it.
Now the display manager doesn't come up on boot anymore.
I need to login into a shell and type
sudo service lightdm restart. After that the login comes up normally.
Xorg.0.log says, that there were no monitors found
I have not changed the default display manager to gdm and then back.
/etc/X11/default-display-manager says "
thanks in advance