It looks like my Lenovo Yoga 13 suffers from a similar issue too. I see the issue on both Wheezy and Jessie installer CDs and using both text mode and graphical mode installers.
An example of the screen is here https://secure.flickr.com/photos/26496092@N00/15071106456/ -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
