DVI to HDMI and supporting 1366x768

baz100 · **DVI to HDMI and supporting 1366x768 -** 09-15-2006, 19:46 | posts: 1

Hi all,
I have recently bought a 27" TFT HDTV, and I was hoping to connect my PC to it from time to time for DVDs etc.

The TV has VGA in, and a HDMI conenctor, so I bought a DVI-HDMI cable hoping this would be the best quality and easiest option. If this generally good practice, or should I have used VGA instead?

The reason I ask is because I am having trouble getting a good quality image. The book says the max screen resolution is 1366x768, but I cannot set my graphics card (Feforce 6800 GS) to this. I read by downloading Nvidias forcaware, this would allow me to select non standard resolutions - but I still will not accept 1366x768.

I can get a picture at other resoultions, but the text is very unclear.

Any help/advice will be appreciated

AlecRyben · 09-16-2006, 04:34 | posts: 7,781 | Location: Utopia Planitia, Mars

Talking from expirience, using VGA is usually better (unless you depend on HDCP, but no videocards until now support it, so HDCP over DVI-HDMI is irrelevant in your case)

Smurfer · 09-18-2006, 17:14 | posts: 116 | Location: WLA/California

Try 1368 or 1360 which ever way you want it scale either up or down. a 2 pixel overscan is nothing.

QuadCannons · 09-19-2006, 16:51 | posts: 2,534 | Location: NYC

If you want 1:1 pixel mapping, (i.e. no wavy watery effect when scrolling text horizontally) then it's all up to your TV.
Also, what DVI is good for is sending resolution and scan line instructions to the TV, so in actuality the TV shows exactly what the DVI tells it to (unlike in VGA where the TV does some auto stretching/over/underscanning of its own)
Download Powerstrip and configure the custom resolution of either 1360 or 1368, and then hope your TV can support it.

sabotage3d · 10-13-2006, 01:03 | posts: 16

how is it possible i have n6800 asus and it is not working with dvi to hdmi can you tell how did you do it

greengiant · 10-14-2006, 01:57 | posts: 346

Quote:

Originally Posted by QuadCannons

If you want 1:1 pixel mapping, (i.e. no wavy watery effect when scrolling text horizontally) then it's all up to your TV.
Also, what DVI is good for is sending resolution and scan line instructions to the TV, so in actuality the TV shows exactly what the DVI tells it to (unlike in VGA where the TV does some auto stretching/over/underscanning of its own)
Download Powerstrip and configure the custom resolution of either 1360 or 1368, and then hope your TV can support it.

thats if the tv does 1:1 mapping, a little overscan or underscan is not that bad but if the tv doesn't allow it the picture is going to get scaled anyway

see if it works when you set it to 720p if so your tv may not accept custom resolutions and will only display 720p or 1080i maybe 480p/i aswell

I don't understand why everyone doesn't like using vga with HD tv's to me the gap in quality is not big enough for all the fuss and if you are using a dvi to hdmi connector you can't use hdcp content anyway

SniperDaws · 10-14-2006, 10:19 | posts: 2,567 | Location: UK

Quote:

Originally Posted by greengiant

thats if the tv does 1:1 mapping, a little overscan or underscan is not that bad but if the tv doesn't allow it the picture is going to get scaled anyway

see if it works when you set it to 720p if so your tv may not accept custom resolutions and will only display 720p or 1080i maybe 480p/i aswell

I don't understand why everyone doesn't like using vga with HD tv's to me the gap in quality is not big enough for all the fuss and if you are using a dvi to hdmi connector you can't use hdcp content anyway

Well for 1 you dont get HD through VGA, 2 With DVI and HDMI the picture quality is 100x better than using VGA.

Stop pointing people down the wrong road.

greengiant · 10-14-2006, 14:35 | posts: 346

Quote:

Originally Posted by SniperDaws

Well for 1 you dont get HD through VGA, 2 With DVI and HDMI the picture quality is 100x better than using VGA.

Stop pointing people down the wrong road.

do you even know what HD means, how do you not get HD over VGA, does your TV not accept HD res over VGA if thats the case your in the minority most tv's support it and let it run at the native res of the TV, which hdmi does not on some tv's

The difference between hdmi and vga should be the same as the difference between dvi and vga on any LCD pc monitor, on any good monitor or tv the difference is minimal, if noticeable at all

SniperDaws · 10-14-2006, 19:38 | posts: 2,567 | Location: UK

Just because you can get a native res of 1280x720 doesnt mean its HD, your a complete crack pot if your telling me the diffrence between DVI and VGA is minimal.

People please go do some research on DVI and VGA instead of listening to Greengiant.

Google is your friend.

greengiant · 10-14-2006, 20:08 | posts: 346

I don't know, maybe we are misunderstanding each other but,

Quote:

the format 720p60 is 1280 × 720 pixels, progressive encoding with 60 frames per second (60 hertz known as Hz). The format 1080i50 is 1920 × 1080 pixels, interlaced encoding with 50 fields (25 frames) per second. Often the frame or field rate is left out, indicating only the resolution and type of the frames or fields. Sometimes the rate is then to be inferred from the context, in which case it can usually be assumed to be either 50 or 60, except for 1080p which is often used to denote either 1080p24, 1080p25 or 1080p30 at present but will also denote 1080p50 and 1080p60 in the future.

http://en.wikipedia.org/wiki/High-de...ision#Notation

says nothing about anything other then resolution and refresh rate, show me something that says HD is more then that

and if you do not consider vga capable of HD, what about component it is analog as well, and converting from vga to component is just as easy as converting from dvi to hdmi

up until a few years ago hdmi didn't exist, but hdtv has been around since the 90's, but I guess that wasn't real HD

JaylumX · **Memory**: 8GB Corsair DDR3 8-8-8-24

I'm with Greengiant on this one. I connect my xbox 360 to my 27" HDTV using the VGA connector at 1280x720 and it looks identical imagewise (if not slightly better) to the image when connected to component at 720p60.

AlecRyben · 10-19-2006, 11:14 | posts: 7,781 | Location: Utopia Planitia, Mars

Greengiant is correct. There is actually no difference between a 720/60p on a overpriced HDTV set and a normal 1280x720x60Hz on a standard computer monitor.

QuadCannons · 10-19-2006, 16:52 | posts: 2,534 | Location: NYC

Regardless of HD or not though, someone seriously needs to do something about that funky resolution. How hard can it be to allow 1366x768 as an option when setting the desktop resolution? I'm still forced to use 1280x720 on my TV (albeit over DVI, because VGA results in some weird non conformity problem)

SniperDaws · 10-19-2006, 16:55 | posts: 2,567 | Location: UK

Well you just carry on watching your so called HD through VGA and Component.

Enjoy!

JaylumX · **Memory**: 8GB Corsair DDR3 8-8-8-24

Quote:

Originally Posted by SniperDaws

Well you just carry on watching your so called HD through VGA and Component.

Enjoy!

In that case explain why you think VGA and component is not high-Definition just to quench my curiosity.

Edit: Reading back on this thread i think that you have mixed up what defines HD-Ready and what is High-Definition. You previous statements about high-def through DVI certainly support that. But we are not talking about TV broadcasts or criteria manufacturers have to adhere to when creating televisions that will recieve an HD signal through an ariel.

So i guess by your definition SnipeDaws Microsoft is liable for frauding a fair percentage of 360 owners who connect their xbox to their TV using the VGA and component on M$ recommendings that its the only way to recive HD gaming.

Quote:

Originally Posted by baz100

Hi all,
I have recently bought a 27" TFT HDTV, and I was hoping to connect my PC to it from time to time for DVDs etc.

The TV has VGA in, and a HDMI conenctor, so I bought a DVI-HDMI cable hoping this would be the best quality and easiest option. If this generally good practice, or should I have used VGA instead?

The reason I ask is because I am having trouble getting a good quality image. The book says the max screen resolution is 1366x768, but I cannot set my graphics card (Feforce 6800 GS) to this. I read by downloading Nvidias forcaware, this would allow me to select non standard resolutions - but I still will not accept 1366x768.

I can get a picture at other resoultions, but the text is very unclear.

Any help/advice will be appreciated

Your situation is pretty similar to mine. I have a Videoseven LTV27CH HDTV. When i bought it a couple of months ago its the specs said its Native res was 1280x720, its response time was 16ms and contrast ratio 600:1. When i actually got the TV and set it up, looking at the manual there was an extra slip of paper with the words "Upgrade" on it. It told me that my response time is 8ms, my contrast ration 1000:1 and finally the highest resolution it supports is 1360x768. Now i connect my TV also to my PC using the DVI while my 360 uses the VGA. Now although the manual states that i can go up to 1360x768, it clearly states that my native res is 1280x720. So that is what i use. Maybe the situation is similar to yours??

JaylumX · **Memory**: 8GB Corsair DDR3 8-8-8-24

Double post

HanShot1st · 10-19-2006, 18:44 | posts: 1,153

HD can be passed over VGA and component just fine. Is digital better? Yes.

Many high quality CRT projectors don't have digital inputs period, and you'd be hard pressed to find a better looking HD image.

As for the original poster, use the VGA and set to native resolution, use the HDMI input for other things like a cable/satellite box.

AlecRyben · 10-20-2006, 08:40 | posts: 7,781 | Location: Utopia Planitia, Mars

Quote:

Originally Posted by QuadCannons

Regardless of HD or not though, someone seriously needs to do something about that funky resolution. How hard can it be to allow 1366x768 as an option when setting the desktop resolution? I'm still forced to use 1280x720 on my TV (albeit over DVI, because VGA results in some weird non conformity problem)

You can use any resolution you want - the only thing you need to do is to edit the driver .inf file (add your prefered res to DALNONStandardResolution list) before installing them.