HDMI display problems (1 Viewer)

[mrkaras]

MediaPortal Version: SVN
MediaPortal Skin: BlueTwo Wide/x-mas 2006
Windows Version: windows 2003 sp1
CPU Type: core 2 duo 2.1
HDD: western digital 400Gb
Memory: 1Gb
Motherboard: Asus P5L-VM 1394
Motherboard Chipset:
Motherboard Bios:
Video Card: Asus Gforce 6200 LE
Video Card Driver:
Sound Card: onboard (ASUS)
Sound Card AC3:
Sound Card Driver:
1. TV Card: kworld
1. TV Card Type: DVB-T
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling: CPU fan / passive on other
Power Supply:
Remote:
TV: Samsung LA37R7
TV - HTPC Connection:


I am trying to get a sensible display on my TV using a DVI -> HDMI cable. I have been running with a VGA cable sucessfully but now I have changed to the digital cable it is all messed up
something is wrong a d the picture is very ugly (dificult to discribe) windows text is near impossable to read, r/g/b seem to be out of alignment slightly and the underscan/over scan are masive.

When I connected my PC LCD motitor to my desktop PC it just works, everything takes up 100% of the screen all the time, no problems, why is the case on my TV/mediacenter so very different? even the bios boot screen has masive overscan

I have looked at powerstrip and didn't fine anything to help, clikcing the position adjustments about 3 or 4 times causes the display to go blank.

I currently have both the DVI/HDMI and the VGA input pluged in so I can often recover form the blankings but the VGA is not the right size either, it still looks 100 times better than the DVI/HDMI at this point.

I don't know if it's related (not sure how it can be) but mediaportal sudenly stoped working also (dirextX related possably?). that is not my main concern at this stage anyway.

 

[spenca]

hi!

try to find out which HD-TV modes is supported by your tv. Then try to change the screen resolution in your graphic card driver settings according to ...

-- 1080i: 1920x1080 @ 50 or 60 Hz - interlaced
-- 720p: 1280x720 @ 50 or 60 Hz - progressive

good luck!

/Mario

 

[Nightmare77]

i have heard reports that Samsung LCD tvs have some issues with HDMI connections from PCs, and that you are running kind of stuck with just a VGA cable. From what i have heard

 

[mrkaras]

The plug is labeled "HDMI/DVI in" and has audio plug next to it, that would imply it was designed with PCs in mind wouldn't it?

the resolution seems to be different in PC mode (VGA cable) and HDMI mode, PC mode says 1360x768 (bit odd I thought) and HDMI mode says 1920x1808i I think.

I will try to get some 1080i resolutions to work, it looks like I need a monitor driver for my TV

 

[Nightmare77]

yeah i'm not entirely sure the reasons behind it from what i can gather there is something within samsung lcd tvs that basically cause issues with hdmi inputs, but say i think that same connection might work say on the new sony's, but if someone who knows can clarify this

 

[spenca]

The plug is labeled "HDMI/DVI in" and has audio plug next to it, that would imply it was designed with PCs in mind wouldn't it?

the resolution seems to be different in PC mode (VGA cable) and HDMI mode, PC mode says 1360x768 (bit odd I thought) and HDMI mode says 1920x1808i I think.

I will try to get some 1080i resolutions to work, it looks like I need a monitor driver for my TV

hi!

a hdmi interface can also handle digital audio signals, a dvi interface not! so if you use dvi on the pc side, you need to connect additional audio signals. if you use a graphic card with hdmi out interface you can plug a digital audio signal into your graphics card to transmit it parallel over hdmi cable. dvi is a kind of substandard of hdmi, and without audio.

try to switch to correct resolution!

/Mario

 

[Jetboy]

As someone stated above, the TV is probably designed to only allow HDTV resolutions on the HDMI/DVI input, i.e. 720p or 1080i. That resolution is then scaled by the TV to match the panel resolution, probably 1366x768.

I'd say you're better off trying to match the panel resolution best you can using the VGA input, 1360x768 or 1368x768 seems to work best for most people. This will probably give you a better picture.

 

[mrkaras]

I were thinking that because it can do 1080i the panel resolution was 1980x1080, your saying this is not the case and that 1080i is scaled down? so 1080i is not 1080i?
if the panel scales the resolutions, why does it scale everything to much larger than the panel resolution ie. large amounts of over-scan, why would it not scale everything to fit the screen.
your probably all right, I'm just trying to understand.
shouldn't a digital connection always be at least as good if not better than a VGA (analogue) connection?

 

[Taipan]

Can you point us to the technical details of your TV (the Samsung LA37R7) - I have checked Samsung's Australian website and it is not listed there at all ...

What resolution do you have your video card set to when you use the HDMI connection?

 

[mrkaras]

No, actually I can't. I looked on the site and found the same thing, the numbers printed on the front of my manual don't match the web site at all. i have sent an e-mail to samsung and they have suggested I call them, I will wait till after Christmas to do that and then see if they can help me.

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