HDMI Resolution Issue?

blackconverse · 25 Mar 2013 at 12:48

Hello,

I have come over home Easter, and I am using a Logik HD 1080p TV as a monitor, and I was using VGA which was absolutely fine I had no resolution issues. I switched over to HDMI, and I am suddenly presented with a weird resolution issue, and I am not entirely sure how to fix it or what is going wrong.

I have uploaded an image to imgur, hoping that someone will be able to offer a quick fix.

don't embed such large images please!
http://i.imgur.com/kezU5gK.jpg

The resolution for some reason seems janky/ too big for my monitor but changing down to a lower resolution does not fix the janky part - and it was working fine at full 1080p via VGA.

Philip Perfect · 25 Mar 2013 at 13:01

There is probably an overscan setting on the TV for HDMI inputs - you need to disable it for the input from your PC.

It will have been working properly on VGA because the TV will recognise that as a PC input, and won't do any overscanning.

blackconverse · 25 Mar 2013 at 13:04

Thanks? I am not sure what the overscan thing means - could you got into a bit more detail, about where i would need to look?

blackconverse · 25 Mar 2013 at 13:38

I have no idea what I am looking for or if this is even the issue can anyone offer any further advice?

Baddass · 25 Mar 2013 at 13:45

defnitely related to overscan i expect. why not just go back to using VGA if it was working fine?

ps check the desktop size and position section for overscan stuff....i've found HDMI from an NVIDIA card to a TV can be a bit of a pain!

blackconverse · 25 Mar 2013 at 13:57

I do not think it is overscan, because even if I resize the text still looks over sharpened, and it reduces the overall resolution so no longer 1080p.

blackconverse · 25 Mar 2013 at 14:07

Baddass said:
defnitely related to overscan i expect. why not just go back to using VGA if it was working fine?

ps check the desktop size and position section for overscan stuff....i've found HDMI from an NVIDIA card to a TV can be a bit of a pain!

I am not entirely sure overscan is the issue, as I have tried resizing, and that does not seem to fix the issue for me. I am wondering if someone could take a look for me via teamviewer, as I could be doing the complete wrong thing.

Baddass · 25 Mar 2013 at 15:33

the thing on NVIDIA cards (and im thinking back to when i had one in my media centre) was that you had to re-size the desktop to get it to fit, which it turn changes it to some weird, smaller resolution. you lose sharpness as a result. when i switched to an AMD card in my media centre it worked fine and wasnt a problem

blackconverse · 25 Mar 2013 at 15:37

Baddass said:
the thing on NVIDIA cards (and im thinking back to when i had one in my media centre) was that you had to re-size the desktop to get it to fit, which it turn changes it to some weird, smaller resolution. you lose sharpness as a result. when i switched to an AMD card in my media centre it worked fine and wasnt a problem

I think I am going to switch back to VGA, but I have noticed on this monitor in certain areas "around bad quality images :/" it gets flicking type pixels?" I am not sure if thats the monitor or the graphics card, as I've not noticed it on my samsung monitor with a 1366x768 resolution

Orcvader · 25 Mar 2013 at 15:43

It's an overscan issue that can either be fixed in the Nvidia Control Panel (not sure where) or the TV settings. Have you tried seeing if there was a game mode/1:1 pixel mapping option in the TV HDMI settings?

blackconverse · 25 Mar 2013 at 15:46

Orcvader said:
It's an overscan issue that can either be fixed in the Nvidia Control Panel (not sure where) or the TV settings. Have you tried seeing if there was a game mode/1:1 pixel mapping option in the TV HDMI settings?

Yeh, there is a picture mode called game mode - but it just seems to change the picture quality slightly - it seems everything is extremely sharp, and if I change the picture mode to "Mild" it completely gets rid of this everything is fine, apart from the fact the desktop is a lot darker - which changing brightness does not seem to fix, and the desktop still goes off the sides.

Orcvader · 25 Mar 2013 at 16:08

Might as well stick with VGA then, seems both your GPU and the TV is not playing nicely with each other

.

blackconverse · 25 Mar 2013 at 16:28

Orcvader said:
Might as well stick with VGA then, seems both your GPU and the TV is not playing nicely with each other .

Yeh. The issue with the VGA cable is that some parts of the screen has little flickering pixels around bad quality photographs etc which is weird :/ but not sure what is causing that exactly.

Orcvader · 25 Mar 2013 at 16:36

You could try another VGA cable if you have a spare one, apart from that don't really have anything else to suggest.

blackconverse · 25 Mar 2013 at 16:40

Orcvader said:
You could try another VGA cable if you have a spare one, apart from that don't really have anything else to suggest.

Yeh, I am going to try find a spare if not purchase a cheap one - than if it works get a better quality cable.