Problems with HDMI

[mic_y]

Hi guys,

Once again I am having some completely weird issues (surprise, surprise)

Over the weekend, went out and got myself a Samsung LA40A650 (40" 6 Series, with Touch of Colour). I hooked this baby up to my HTPC via HDMI. The GFX card in the PC has no "native" HDMI out, and only works with an ATi DVI-HDMI adapter, to transmit both audio and video. The GFX card in question is the Sapphire ATi Radeon HD3470 512MB.

Once I had hooked everything up, set the resolution to 1920x1080, the picture seemed a little bit weird. The images displayed looked perfect, but text was very bad. I decided to run a couple of standard PC monitor tests, and while most looked acceptable, the Moire test (where each alternating pixel is set to either white or black, creating a overall uniform grey screen) the picture was not uniform at all, and the screen made a buzzing sound.

I initially suspected the TV, but then decided to hook it up via a normal VGA cable, and all the issues went away. Obviously this does not rule out the HDMI input on the TV, but at least I am quite sure that the panel is alive.

Any ideas what the issue could be? Basically, I have ruled it down to one of 2 things:
1: HDMI input on TV
2: DVI-HDMI adapter screwing around with signal

Any help would be appreciated.

 

[mic_y]

ok basically, I have managed to sort out the issue. The problem came about due to the damn TV being set to 16:9 mode, and when receiving the HDMI signal from the computer (1920x1080) it would for some reason decide to resize it, causing all the blurry text, and problems displaying alternating pixels. As soon as I set the mode to scan only, everything started working perfectly... now, please explain to me why anybody would want to feed a TV like that a 1080p signal, just to have it resize something.

Well that was one week of stuffing around down the drain, but oh well...

 

[werner]

all/most hdmi inputs will overscan...legacy of having round tv's in the 60's.

sorry i didnt see this topic earlier else i wouldve helped you

 

[mic_y]

hehe, as soon as I set the mode to "Just Scan" the picture was perfect. Fit perfectly, text was crisp, and no more issues with the moire tests.

Now there is a new problem of the TV not saving any of the settings. If I turn it off, it goes back to 16:9, leaving me with the usual issues.

Any ideas on how to make it save the settings permanently?