Tried to pin down where the problem happens; looks like it's the startup of gdm, if I run recover mode and then complete boot and run gdm manually (/etc/init.d/gdm start) ; same thing happens , blank screen and unable to switch to other sessions.
Tried to pin down where the problem happens; looks like it's the startup of gdm, if I run recover mode and then complete boot and run gdm manually (/etc/init.d/gdm start) ; same thing happens , blank screen and unable to switch to other sessions.