title: qemu-kvm install iso falls in blank screen with "640 480 graphic mode"
body: <p>I'm new to qemu-kvm. Here is the environment I have: two physical machines: one is local machine with ubuntu-12.04-desktop, another is remote machine with ubuntu-12.04-server running (no gui, only console). On the local machine, I ssh to the remote physical machine, and want to use qemu-kvm to virtualize a guest os (ubuntu-12.04-server) on the remote physical machine. </p>
  
  <p>After successfully installing kvm, I tried to install the guest os (iso file) onto the disk img file, the command I used is:</p>
  
  <pre><code>sudo qemu-system-x86_64 -hda vdisk.img -cdrom ubuntu-12.04.4-server-amd64.iso -boot d -m 2048 -curses
  </code></pre>
  
  <p>then what happened is that the whole terminal screen (on my local machine, in ssh session) turns into a blank screen only with the label "640 * 480 graphic mode" in the center.</p>
  
  <p>I tried <code>-nographic</code> <code>-vga std</code> to the command, and <code>ssh -Y</code>, it does not work. I also tried the same command directly on the terminal on the remote physical machine, same problem happened.</p>
  
  <p>After looking through online, I found that it might be related to the framebuffer or vga problem (No GUI on the remote physical machine. But when iso file boots up, it tries to load in some vga mode, I do not know). After hours, I still do not have any clue to solve the problem...</p>
  
  <p>Thanks!</p>