PC to LCD Max Resolution? ATI Card Doesn't Do The Trick?

wrote in message
...
Two problems--two misunderstandings?

I just bought a Sceptre 37" LCD HDTV. Its native resolution is 1080p and,
with a VGA input its PC VGA max resolution is 1920 x 1080 @ 60 Hz. On the
PC end I'm running a Sapphire (big mistake??) Radeon X800GTO 256 card.

1. Although the card will put out 1600 x 1200 and the Sceptre will agree
and display a nice 37" Desktop the Sceptre will not display 1920 x 1080.
Instead it reverts to 1280 x 1024. It will do 1280 x 720 (of course). I
tried an ATI DVI out to Sceptre HDMI input cable and this made no
difference with Sceptre signal recognition. Does anyone know graphic
cards
well enough to explain why the Sapphire X800GTO is not providing the right
(HDTV?) signal for the Sceptre to recognize?

So far all that I have learned from Sceptre and ATI is that the Sapphire
X800GTO may not be designed right to work 1080 resolutions. If that is
true I am prepared to exchange the card to one that "should" and at the
same time raise things a notch. I'm thinking of the ATI Radeon X1800XT
512. On the other hand...

2. When I mentioned to the Sceptre phone tech that the ATI card was
driving
a nice 1600 x 1200 ("upscaled"?) Desktop on the Sceptre he told me I
should
never do that--that it could be taxing the screen to fail prematurely. IS
THIS TRUE? Should you never exceed the maximum native resolution of a
LCD?
If so where does upscaling come into the picture. I thought upscaling
past
a native resolution was okay--just not as crystal clear as a native
resolution might be. If this is true then it means I should not play any
PC game in any resolution past 1080?!?

If my PC gaming resolution is really limited to 1080 or under then the
X1800XT would really be overkill--unless I plan upgrading the HDTV yet
again in the near future--no? If you follow all this it is really
important for me to learn and live in the TV's limitations OR be willing
to
take the risk that the screen might go dead next month. Any thoughts?

Thanks for the help.

Susan

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According to other postings I've seen, the Sceptre X37sv does accept 1080p
PC signals into it's DVI/HDMI input.

Connect your monitor with DVI/HDMI, then go into your ATI menus [right
click, settings, advanced, monitor] and look for a box labeled "hide modes
this monitor cannot display" and UNcheck it.

When you get it to work, then always use the DVI input, not VGA. Much
clearer.

Let us know how it goes.

wrote:

... I get the screen confirmation that it is 1920 x 1080 @ 60 Hz
but get a very unsatisfactory screen "shimmer"

Your graphics card is emitting a "progressive" signal at 60Hz,
or "60p". The ATSC standard, at 1080, only provides for
24p, 30p and 60i (interlaced).

Unless a TV was advertised as a monitor, I would not expect
it to accept a 1080p signal above 30Hz, although some may.

What does a smaller LCD panel designed as a
PC monitor do differently??

The PC monitor expects 60p or higher signals at its rated
resolution, and is usually multi-sync, accepting and displaying
arbitrary resolutions and rates for 16:10 and/or 4:3 content.

The TV must expect the ATSC resolutions and rates, and
may not support others. TVs are usually 16:9 or 4:3.

--
Regards, Bob Niland
http://www.access-one.com/rjn email4rjn AT yahoo DOT com
NOT speaking for any employer, client or Internet Service Provider.