I'm using a Radeon HD 4870 in my computer, with a monitor and a TV hooked up to it. I have no issue with the monitor, but the TV gives me trouble. I have a DVI/HDMI cord, with HDMI plugged into the TV and DVI plugged into the computer. When I set it to the correct resolution (1360x768) the screen is squished to a 4:3 aspect ratio. When I set it to other resolutions, they become widescreen but look terrible. The TV has a VGA port that I can use and display the resolution properly, but I would rather use HDMI.
If anybody could help me resolve this issue, it would be greatly appreciated!
More abouthdmi resolution issue
The correct res should be 1366x768. Have you tried 1280x720?