I've been trying to set up my TV as a second monitor. My laptop has an RCA cable output for external video. In windows I had no problems just selecting dual monitors and it automatically detected it, but so far I've never been able to get my computer to run on my tv in ubuntu. My graphics card is an ATI Mobility 7500.. I know ubuntu doesnt like to play with ATI cards too much, but I would think there is some way to make this work. Any suggestions?