[ubuntu] HDMI output is not working

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http://ubuntuforums.org – HDMI out Put is with full of different colors and screen is not full on TV Hi I have Lenovo Y550 laptop I have installed UBUNTU 9.1. Every thing works OK. But When I connect it to TV through HDMI cable, Video goes to TV and show very hazy and Florescent Green, Orange and bright white colors shows. Also Screen is expanded to Vertically. can any one help on this Issue. (Hardware)