I am new to kvm. I have this strange issue. But before explaining the issue, here is my set up.
I try to install VM on my Host which is a Acer Laptop 5720 Intel Core 2 Duo T7500 processor. The cpu flags indicate that Virtualization is supported. I run Ubuntu 10.04 (lucid) which comes with kvm.
Now coming to the issue - I dont get any errors while executing "sudo modprobe kvm-intel". So I presume my processor does indeed support hardware virtualization.
I use virt-manager and create a VM on which I install ubuntu from an *.iso file. When I start the VM it says it is running. No signs of any trouble. I can see the domain listed in "virsh list". But when I try to connect to the VM thru VNC, all I get to see is a blank screen (no cursor). There is no response to any key press. And I am unable to install the OS on the disc. Same happens when I try thru the commandline.
I changed the video mode etc. Tried all different combinations but nothing helps. But strangely, if I shutdown the vm an virt-manager and then unload the module by doing "sudo modprobe -r kvm-intel", everything works fine. ie., I can see the screen via VNC. I am able to install the OS and so on.
So what does this mean ? Is hardware virtualization not supported on my laptop ? How come there is no error anywhere ? dmesg | grep kvm doesnt report anything. Can someone throw light on what exactly is happening ?