KVM ubuntu install failed

Hi all!
I have problem ! I installed BSD squeze in RouterOS 5.2 KV and everything works fine. But BSD didn’ t liked for me !
I have more experience with Ubuntu server.
But when is start install Ubuntu 12.04 LTS , ubuntu after menu where i choose install it hangs up , and show black screen.
If i install Ubuntu server 10.04 i can install sucessfuly , but when i first start just installed ubuntu server , i see blank black screen , and server hang up.
What i do wrong ? If possible this to solve ? Please help me !

hi there.
seems like we have the same problem here. did you use ROS 5.20?
It show blank screen for installing ubuntu 12.04, 12.10, and 13.04. maybe it doesn’t compatible with kvm in ros 5.20.. :frowning: