I have a Mac mini 2007 and Apple DVI to S-Video/Composite adapter which I am trying to connect to an old TV. However upon connection, OS X chooses 480i by default and other resolutions just show garbages. It shows NTSC/PAL (see screenshot) so I imagine it's doing something for traditional TV. The TV works with 1080i when Apple TV is connected via a component cable. What am I missing?