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Description of problem:
X windows could not be booted up by using 'vga' video mode in guest.

Version-Release number of selected component (if applicable):
libvirt-0.8.1-13.el6.x86_64
qemu-kvm-0.12.1.2-2.90.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. Install a linux guest.
2. Changing guest video mode with 'vga'.
3. Start X window in guest.
  
Actual results:
Fail to start X window.

Expected results:
X window can be booted up normally.

Additional info:
'cirrus' video model has no issues.

This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release. It has
been denied for the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **

Please provide the /var/log/Xorg.0.log file showing the failed attempt to start X.

Sorry, it's not a real bug, because RHEL6 beta2 didn't install X window by default, and no any way to choose components during installing by user. Close it to NOTABUG.