I've read all the posts here about people with auto rotate issues on their Chromebooks. I have been a Chromebook user for many years and my new spin 15 is my 9th Chromebook (second 2 in 1 Chromebook). When I use the unit free from any external connections the auto rotate feature works fine. Even with the power cord connected it works fine. However, when I connect my USB mouse (its a Microsoft mouse I use with my surface pro), I lose auto-rotate functionality. The mouse itself works fine. I'm guessing because this only happens when the USB dongle is plugged in it is some sort of compatibility issue, but it seems strange that if it is a lack of compatibility that the mouse should not work at all, which is not the case.