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Windows 7: Interlacing problem on LCD TV

29 Apr 2011   #1

Windows 7 Ultimate x64
Interlacing problem on LCD TV

I have my Sanyo 26" hooked up to my PC with an HDMI cable and DVI adapter. Grabbed the latest update for my graphic card driver a little bit ago and was FINALLY able to select the TV's native resolution of 1366x768, but now it seems I have a bit of an interlacing problem when moving the mouse, watching videos, etc. Doesn't do it on the "recommended" 1280x720, and I'm not having an issue with my primary either.

Would appreciate some help, thanks :)

My System SpecsSystem Spec
05 May 2011   #2

Windows 7 Pro 64
Nothing to do with interlacing

I'm not too sure what's causing your problem as you don't really describe it other than to say it's an"interlacing" problem, which doesn't actually mean anything.

What resolution were you running before you updated your video card? 720p?
You should have been able to run at least 1360 x 768 (if not 1366).

Most modern video cards don't support interlacing at all. If they did, you would be running 1080i.

If you were running 1360 x 768 before the driver update try running it again and see if your problem is gone. If not, reset your TV to defaults and try it again. If not, roll back your video card driver and try 1360 x 768 (it's only a 6 pixel difference). If you cannot run 1360 with your old driver, you may have to contact ATI (AMD now) and explain to them what your problem is. There may be a problem with the driver they are unaware of.

You can always try the size and position settings on the TV to see if it corrects anything. Also try using the "auto" option on the TV if it has one.

Lastly, you can always try a different HDMI to DVI adapter. Make sure it has all the pins on the DVI side, and not just half of them. There are two or three different types of DVI, the best bet is always get one that's fully populated with all the pins.

Here is a good page explaining the differences:

DVI Tutorial - Digital Visual Interface Tutorial - - 1-800-931-3133.

Make sure you get an adapter that is the DVI-I so it will definitely have the signals the HDMI cable wants. At the very least make sure you have the DVI-D and NOT the DVI-A.

You could also try using a VGA cable with an adapter on it as most TVs come with a VGA connector (especially 720p/1080i TVs). If this corrects your problem you'll be a happy camper. This should also eliminate any overscan issues that may become apparent with HDMI connections. You should be able to pick up a VGA/DVI adapter for a couple of bucks, and a VGA cable (if you don't already have one) for under $20.

That's about all the advice I can give. I know it's not much, but I hope it helps.
My System SpecsSystem Spec

 Interlacing problem on LCD TV

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