I've compiled a list of some of the common questions \ answers on graphics related issues. I hope this helps organize this information in one place:
When launching Revit 2011 I receive a Some features may not be fully supported by the video card and driver on this computer message
See the following technical solution, Some features may not be fully supported by the video card and driver on this computer.
When using remote desktop to connect to my workstation why is hardware acceleration disabled?
Hardware Acceleration will be disabled for remote desktop clients. Software mode will instead be utilized. You should receive the following dialog at startup if launching Revit over a remote connection:
On the Revit Graphics Hardware List are there driver download links?
There are no links to download the drivers directly on the list at this time. It is recommended to instead visit your graphic card manufacturers web site to download the same driver version outlined in the document.
I've updated my driver and I still get a message at 2011 startup; why is the dialog still coming up?
Take note of the specific message on the dialog after Problem:. If your card is supported/recommended but you are running a driver more recent that the version tested, a dialog will still appear at startup [which you can dismiss if needed].
Ambient Occlusion does not appear to be active, is there a setting I need to modify?
Ensure that your graphics card is supported and that hardware acceleration is enabled.
Why in my realistic view are materials not visible?
Ensure that your graphics card is supported and that hardware acceleration is enabled. See the following technical solution, Materials are not visible in a Revit view set to realistic visual style, for additional information.
What if my card or driver does not appear in the list or I have issues with a specific card?
You can use the Report a Problem link to submit specific graphics card issues with Revit 2011 products you may encounter.