[Qemu-devel] VNC viewer displays nothing with -enable-kvm but works fine without -enable-kvm

[Le Tan]

Hi, I used qemu-kvm-1.2.0 before. I can run qemu with kvm well. Two days ago, I updated qemu to qemu-1.6.2, and start the qemu with the command:

qemu-system-x86_64 -m 2048 -smp 4 -hda /home/tanle/study/new.img -nographic -vnc 162.105.146.118:2

It works fine and slow. It is obviously not using the kvm to accelerate.

Then I use the command:

qemu-system-x86_64 -m 2048 -smp 4 -hda /home/tanle/study/new.img -nographic -vnc 162.105.146.118:2 -enable-kvm

The VNC viewer can connect to the vm, but it is black and displays nothing. What is wrong here?

My kernel version is 3.11.0. Will it be the problem of compatibility?

Thanks!

--Le Tan