On Lenovo W510, display picture is "shaky" during shutdown. It is OK during both boot and when running. The text is readable and shutdown completes, it's only a minor issue. A little nice-to-have :)
See bug 607586 for logs and hardware config.
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated in the
current release, Red Hat is unfortunately unable to address this
request at this time. Red Hat invites you to ask your support
representative to propose this request, if appropriate and relevant,
in the next release of Red Hat Enterprise Linux.
No further hardware enablement updates are planned for RHEL5's X stack. If the nouveau driver in RHEL6 has issues on this chipset, please file a new bug against RHEL6.