Problems getting 1080p output on 1080p LCD TV

FrenchTart

FrenchTart

FrenchTart

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Hi there,

Recently bought a LCD40F108P due to being cheap and big (I realise not the best picture quality but I'm not a videophile and it's more than decent enough for me).

We're having problems getting the display to accept a 1080p signal from a PC. So far we've tried using a DVI<>HDMI lead (have now got that working @ 720p) and DVI>VGA lead (no signal).

We've tried this on a 7800GTX graphics card and also an 8800GTS640 card. Both on WindowsXP.

Is there something really obvious I'm missing here? I thought the resolution limits might possibly be due to some HDCP messup but I'm really not sure :S
 
That's what I'm trying to find out. As far as I can tell, the 7800GTXs as a rule aren't but from what I've read *all* the 8800GTS cards are meant to be?

edit: Reading up it really does look like the 8800GTS640s should support HDCP.
 
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It's nothing to do with HDCP that's for sure as this is only required for HD media itself, like Blu-ray, not just displaying at a particular resolution. The reason it says no-signal with VGA is that your TV does not support 1080p over VGA, just with many other TVs.

The problem with DVI might lie with the fact that your PC is not detecting it as a 1080p display for some reason. You can force it to accept any resolution by using something like powerstrip or rivatuner.
 
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I was mis-informed. We've managed to get 720p working over VGA, not DVI<>HDMI (which is indeed the max res it supports over VGA). The HDMI connection will get a signal at any resolution up to 1080p *but* the signal is quite garbled and is mostly green. I'm not sure if it's just a dodgy HDMI cable or what really...

Apologies for getting it the wrong way round earlier.


edit: Also, I thought that some TVs require the HDMI sockets to HDCP-handshake in order to display a signal?

edit2: "green hdmi" seems to return a lot of results on google. Intriguing...
 
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We sorted it with a new cable. Despite being the same brand and model (and from the same shop), the 2nd cable was twice the thickness of the first. Dodgy.

Also got 1:1 pixel mapping working...just one button on the remote. Really made a joke of the hours I spent researching pixel mapping first :p

Picture quality is really good (for the price). This is coming from 19" and 26" LCDs and 21" CRTs. I'm sure videophiles wouldn't agree :)
 
I've been eyeing up this TV as well due to the bargain price.
Would welcome more feedback on the display especially for gaming (which I presume is on the cards with 7800gtx/GTS640 being used...)

Also how does it look for normal (non-HD) tv viewing?
 
I don't watch broadcast TV so any SD stuff is simply SD files scaled up by fullscreening the file in VLC. It's definitely harder to get away with low quality rips of DVDs now and I'm probably going to have to redo some of my older DVDs and perhaps play with the ffdshow filters to enable higher quality scaling. I've heard this is a fairly common problem with cheaper sets and tbh, I've seen worse quality SD viewing at friend's houses (no idea of the TV set as it was a while ago).

DVDs themselves look very nice, as does 720p TV stuff (downloaded some of BSG to compare against my DVDs). The blacks aren't amazing on it but they're not awful either - I personally only noticed them because I was looking out for the reportedly cack blacks you get with LCD HDTVs but it's really not bad at all.

So far gaming on it has been amazingly good actually. No problems with ghosting or input lag (I generally play a lot of fast-pace FPS games so I'm quite sensative to that sort of thing) and it's been great for 720p xbox360 games, 1080p SNES emu :p and a quick jaunt into HL2. Sadly I haven't had a chance to play anything else with it yet but once I get some free time that will change.
 
Aekeron said:
I don't watch broadcast TV so any SD stuff is simply SD files scaled up by fullscreening the file in VLC. It's definitely harder to get away with low quality rips of DVDs now and I'm probably going to have to redo some of my older DVDs and perhaps play with the ffdshow filters to enable higher quality scaling. I've heard this is a fairly common problem with cheaper sets and tbh, I've seen worse quality SD viewing at friend's houses (no idea of the TV set as it was a while ago).
Click to expand...

it can be quite the opposite infact. a decent tv can show up compression artifacts you possibly woudlnt see on a cheap set. watching low qulity video on my 1080p sony is just awful :p
 
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