HDMI display problems (1 Viewer)

[Taipan]

I have my video card set to 1920x1080 at the moment.

Interlaced or progressive?

I suggest you try 720p - I am guessing that your TV has a native resolution of 1366x768 and thus 720p would be the nearest TV resolution. There is nothing to be gained by using 1080i or p, as the Samsung TV would then just scale it back down to 1366x768.

 

[mrkaras]

As far as I can tell it is interlaced.
It looks to me like the TV does have a native resolution as you suggested but that it scales everything up to 1080i regardless of what I feed in. When I set the PC to 1366x768 it still displays much the same.

how bad would an interlaces resolution look on windows, I noticed the mouse pointer goes stripy when I move it and thought this could be the interlace but I also noticed on a test screen displaying lots of fine parallel black and white lines the patten does not look even and I can sometimes see a mark about 20mm to the right of the mouse pointer.

So would I get a more precise display using an analogue VGA cable rather than having the TV distort the digital DVI/HDMI signal? Did I entirely waste my money on the DVI/HDMI cable I just bought?

 

[Taipan]

When I set the PC to 1366x768 it still displays much the same.

That's not what I meant - please try setting your video card to the TV resolution of 720p (which is actually 1280x720) for the DVI/HDMI output. Your Samsung LCD TV will then scale that to its native resolution of 1366x768. The other thing that you need to be aware of (and your TV manual should state this in the Specifications) is that your Samsung LCD may only accept 720p @ 60Hz ! Whereas, for PAL TV we really need 720p @ 50Hz.

There is nothing to be gained by trying to run the TV at 1080i or p, since it will scale it back down to 1366x768 anyway ...

 

[VdR]

I have exactly the same problem with my Samsung (LE32R41B)!

I also use a DVI to HDMI cable.

I can't help much, since I just gave up a few months back. I was wondering if I had maybe bought a (very) poor quality cable.

However if there are any suggestions I'd be happy to try them out to see if it works.

VdR

 

[moppe]

Samsung supports only HDMI whit HDCP, what that means is if you are using HDMI from ex. a DVD player so must the DVD player support HDCP. It’s not possible that use a DVI to HDMI with Samsung LCD ie DVI not support HDCP. and its the same whith PCs.
I solve this problem whit an HDMI Graphic card (SAPPHIRE RADEON X1600PRO 256MB HDMI) and now its working perfect, and I am also using the S/Pdif RCA in to carry the sound thru the HDMI cable.
It took me like 10 calls to Samsung before the emit that its demands HDCP. And I think this is general for all later Samsung LCDs models.

Regards Moppe

 

[VdR]

Well that's clear.

But I consider this misleading from Samsung's side. One of the arguments for buying the Samsung was the HDMI i/f. I do not find the restriction mentioned anywhere .

I'm not unhappy with the VEGA i/f quality, so I will just stay with that.

VdR

 

[smnnekho]

so, as i'm maybe about to buy a samsung LCD:

1) it works fine using VGA
2) it works even better when i upgrade with a gfxcard with a HDMI output - meaning i can use its native resolution 1:1 via HDMI then?

Q: when buying a HDMI gfx-card do i have to be cautious about anything? or arent there any issues that could end up in a not working htpc-hdmi <--> hdmi-samsung LCD (-; ?

 

[mrkaras]

When I first plugged the VGA connection in it was not better than the HDMI is now, but then windows just did something for no apparent reason an it was all perfect. If i plug the VGA in today it will not fit the screen and will have much the same problems. a HDMI graphics card might work but i believe the choice will be very limited and it wouldn't surprise me if that didn't work either.

 

[Asmodision]

Think that you have missed some things here.

First of all the Samsung LCD's DOESN'T support native resolutions via HDMI. This means that if your Samsung display just support 1366x768 native it will never look as good as if you use a native resolution via d-sub insteed.

So if you use HDMI and using a output resolution of 1366x768 your TV will set it self to use 1080i. Now your TV will first upscale the signal from 1366x768 to 1920x1080 and then, because of the panels limitations, downscale to 1280x720 witch is the closest resolution that the panel supports. This will make the picture suck like h***.

And if you set your system to put out 1920x1080 it might look nicer but still it will suck.
If you set it to 1280x720 it will look nicer, but then the TV will try to upscale to 1366x768 (witch it can't do right so you will have black edges around)

So if you would like to get best picture quality from any computer device you should use a d-sub and use the panels native resolution.

But if someone has a workaround to fool a Samsung panel to use a native resolution via HDMI please notify us in some way.