Flickering White Dots over 1080p disappear over 1080i

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Flickering White Dots over 1080p disappear over 1080i

Postposted on Sun Dec 15, 2013 8:21 pm

Hey all. Just got a 55" LED tv (LG 55LN5100 - yes its the BestBuy BF special) and have it connected as 1080p. Works fine for TV over 1080p. I have it hooked up to my computer. I have a Radeon 6850. I have it connected via HDMI. I am using http://www.amazon.com/gp/product/B00BEW ... UTF8&psc=1 as my cable.
With it set at 1080p I get white flickering dots, but as soon as I drop it down to 1080i, it disappears. Is it a setting I need to change? I have the latest 13.11 betas installed.
Does it have anything to do with Pixel format? Any help would be appreciated, since I got a bunch of 1080p bluray vids that I would like to watch at 1080p instead of 1080i. Thanks in advance!
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Sun Dec 15, 2013 9:45 pm

What refresh rate are you using? You should be able to feed it 24 Hz (if you only want to watch movies) or 60 Hz (for general use).

IIRC AMD seems to default to 59 Hz...
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Sun Dec 15, 2013 9:45 pm

According to CCC and the info button on the tv, they both say 60hz

CCC says the max reported is 70hz, but I have no option for that.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Sun Dec 15, 2013 10:23 pm

Okay so I looked at the settings on the TV and i turned Horizontal Sharpness down from 10 to 0 and it disappeared!
SUCCESS!
Thanks for ur help.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 6:08 pm

TVs do all sorts of dumb things. My old LCD HDTV did something similar if the sharpness was set on 0 (anything else worked). :lol:
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 6:22 pm

From your description it sounded like what happened to me a while back when I tried running my large display off of an IGP. It should have worked, but I got snow all over the place. I purchased a discrete card that produced a clear picture without the effects of pushing a video signal to its limits.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 7:32 pm

I think the OP may have HDMI signalling problems? (ie. cable is not good enough)
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 9:17 pm

Rectal Prolapse wrote:I think the OP may have HDMI signalling problems? (ie. cable is not good enough)


Sounds like that to me as well. But it's just possible that the TV is defective. I would try a different (read: better) HDMI cable and if it still does not work at any chosen setting, return it. I realize the problem already seems 'solved', but maybe the problem is just masked.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 9:18 pm

Rectal Prolapse wrote:I think the OP may have HDMI signalling problems? (ie. cable is not good enough)

He already fixed it - it was just a processing issue on his TV.

I don't think anyone really wants to run sharpness on anything other than "don't process anything" since TVs use it to enhance sharpness.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Mon Dec 16, 2013 9:25 pm

Waco wrote:
Rectal Prolapse wrote:I think the OP may have HDMI signalling problems? (ie. cable is not good enough)

He already fixed it - it was just a processing issue on his TV.

I don't think anyone really wants to run sharpness on anything other than "don't process anything" since TVs use it to enhance sharpness.


I always wish TVs just had a BIG BUTTON that turned off everything but Brightness and Conrast.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Tue Dec 17, 2013 1:39 am

Thanks this thread helped me as well, My panasonic LED was also acting up the same way, i reduced the sharpness and woah no more flickering white dots.
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Re: Flickering White Dots over 1080p disappear over 1080i

Postposted on Tue Dec 17, 2013 9:02 pm

keltor wrote:I always wish TVs just had a BIG BUTTON that turned off everything but Brightness and Conrast.

Agreed. Some setting for "become a monitor like you should be" or something along those lines.
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