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I just got an LCD TV and am trying to use with my computer. I don't have cable, so I would like to just use a PC for all my TV viewing. The TV is Sharp Aquos LC-40LE700UN. It's 1080p 120Hz, so it is a decent one and should be able to handle any reasonable input. My video card is Radeon 9600. Yes, it's old, but it supports 1920x1080. I am using a Monoprice DVI -> HDMI cable to connect them.


Anyway, I tried a bunch of different resolutions. All seem to work fine. For some reason 1777x1000 does not work at all, but that does not concern me. When I try 1920x1080 60Hz (which is what I really want to use), I get a ton of horizontal static. I can make out what is on the screen, but it's definitely far from watchable. The TV classifies the signal as 1080p, so something is right. I also tried 1920x1080 30Hz (interlaced). That works and TV appropriately calls it 1080i. So why is 1920x1080 60Hz not working?


Thanks in advance.
 

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Many HDTVs HDMI receiver chips that will accept 1080p/30, or 1080p/24 will not accept 1080p/60 since it is not an approved ATSC resolution and requires twice the bandwidth of 1080p/30 or 1080i. Check your TV user's manual.

Since it is a new TV there is no reason for you to try and send it an underescanned resoolution since it has the abilty to eliminate Overscan with 1:1 or dot for dot display mode.
 
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