Blurry text over HDMI

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castun

2[H]4U
Joined
Sep 23, 2010
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Helped my BIL setup an HTPC on his HDTV. It's a 60" Panasonic, with the HTPC connected through HDMI. Video looks fine, along with the desktop, but text is slightly pixelated around the edges. I've made sure it's running at 1080p resolution, and the TV is setup for game mode (there doesn't seem to be any specific options for 1:1 pixel mapping though.) I've also gone through different TrueType configs and all to no avail. You can't really notice it when sitting on the couch, but any closer and you will or if you're zoomed in on something.

I remember having a similar problem on my own HTPC setup at home. My LG 24" monitor has an HDMI input, so it came with a DVI-HDMI cable and of course looks perfect. When I tried it out on my HDTV though, same problem. I ended up "solving" the problem by using the VGA port on the TV and the audio through the 3.5mm speaker jack, and BOOM pixel perfect text & images. Problem is, his TV only has HDMI inputs (which I think is bogus, for such a nice expensive TV.)

I can get more specifics later, such as the model # and hardware (I remember it's an nVidia with the latest WHQL drivers) as well as a couple close up pictures of the problem if that would help.
 
Last edited:
|Tch0rT| said:
That's a common problem when hooking up PC's to HDTV's. Some HDTV's don't support 4:4:4 chroma subsampling and because of that one of the results is blurry text.

http://www.avsforum.com/t/1381724/official-4-4-4-chroma-subsampling-thread

http://en.wikipedia.org/wiki/Chroma_subsampling
Click to expand...

Thanks for the feedback. I've Googled the problem, and while I've seen other instances, there was never any real answer or solution given that I could find. Some people have also had similar experiences too where HDMI has pixelated text, but the VGA input works fine, as it did on my own HDTV.
 
castun said:
Thanks for the feedback. I've Googled the problem, and while I've seen other instances, there was never any real answer or solution given that I could find. Some people have also had similar experiences too where HDMI has pixelated text, but the VGA input works fine, as it did on my own HDTV.
Click to expand...

VGA doesn't downsample chroma. In fact it doesn't have chroma because that's a YUV colorspace thing and VGA is RGB.

If your TV supports RGB over HDMI, switching to it could potentially fix the problem.
 
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