My Thinkpad X1 Carbon apparently supports Intel WiDi. I believe this should, in theory, allow me to share my screen with my Sony Bravia TV which supports Miracast.
Is it possible to make use of Wireless Display in Ubuntu to share my display with my TV?
I found a thread on ubuntuforums.com about this very issue. It was started in 2010 but it appears that as of the final post (January 2013) there was still no WiDi support in Ubuntu. As the commenter mentions, Windows 7 has had support for a while.