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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Tue Jan 12, 2010 3:54 pm Post subject: The non-HTPC PC Question |
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Xmas 2008 the wife bought me a Samsung T240HD HDTV for my computer room. I've enjoyed and used the heck out of this thing during the past year. Highly recommend it now that its only $250.
Anyway, if I use the DVI connectivity I cannot get 1920x1200 without horizontal scrolling being imposed. Yet, if I use good old analog, I can get 1920x1200 perfectly.
I doubt that this is the video card, but I have been wrong before. I guess this old nVidia PCX5300 may be limited on the DVi interface, or the Samsung could be limited on its DVI input. The Component and HDMi inputs work as expected.
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Trust no one. Absolutely no one. Advice of the board.
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LOTREE
Joined: 19 Mar 2006
Posts: 401
Location: Paradise, Newfoundland
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| Posted: Thu Jan 14, 2010 3:28 am Post subject: |
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It could be maxing out at 60Hz, which is the limitation of DVI sadly, causing your problem.
Per http://www.thinkwiki.org/wiki/Problem_with_DVI_throughput :
| Quote: | Unofficially, good DVI transmitters can support resolutions like 1600x1200 or 1920x1200 at 60Hz used in modern TFT monitors. However, not all DVI transmitters can push this resolution, due to poor signal quality from cheap manufacturing or weak TDMS transmitters.
Random screen corruption means that approximately 1 out of 5 times you will have a lot ot flickering blue and green pixels (roughly gathered to vertical stripes) on your DVI driven display. It is not entirely clear so far if the screen corruption problems are a driver or hardware problem.
You may also discover the phenomena of a blurred picture when having automatic picture expansion enabled on a higher resolution display. Switching this off should recover the picture quality. |
I was going to buy a DVI-A to 5-BNC cable until I found that out last week.
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Zenith Pro 1200x | Electrohome ECP 4500 | Yamaha HTR-5740 | HTPC & Speaker build to follow
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kschmit2
Joined: 09 Mar 2006
Posts: 1141
Location: Heidelberg, Germany
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| Posted: Thu Jan 14, 2010 5:09 am Post subject: |
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dvi-a is an analog signal that just uses the 5 small pins in the DVI-A connector. It's only limited by the analog drivers of the source.
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