Issue Outputting from Intel GMA4500HD to TV at 1080p

[DrHarvey12]

Hi guys,

I'm trying to output video from my laptop (Compaq Presario CQ71) to my tv via HDMI. I've got the picture and sound to the HDTV fine but it only takes up a portion of the tv screen. The max resolution allowable by the laptop is 1600x900 and it does not seem to support anything higher.

It has an Intel GMA4500HD integrated chip which says it does not support tv modes in graphics properties!!!!!

When I create a manual custom reolution of 1920x1080 it says this custom resolution exceeds the maximum bandwidth capacity!!!!!

Any ideas of a way to get it to display at 1920x1080 or am I just stuck with it?

Thanks for any advice

[PXT263]

Sorry. No.

[Gorge]

tv's dont generally do 1920x1080 very well, it normally does 1366x768

[Vonje]

tv's dont generally do 1920x1080 very well, it normally does 1366x768

1280x720*

[Versteken]

you either need to set the source to match the displays native resolution, or set the TV to stretch the output to fit the screen.

the latter will look like ♥♥♥♥.

[YahooElite]

"When I create a manual custom reolution of 1920x1080 it says this custom resolution exceeds the maximum bandwidth capacity!!!!!"

Meaning the Integrated GPU is to weak to handle what you are trying to get it to do.

[TheMG]

tv's dont generally do 1920x1080 very well, it normally does 1366x768

If it's a TV with a native resolution of "720p", yes, but true 1080p TVs have a native resolution of 1920x1080.

1280x720*

Actually, most "720p" monitors and TVs have a native resolution of 1366x768. Not sure why that is, but that's how it is.

[joemtnbike]

What is the model of TV?
Does it support HDMI 1.3 or higher?
Is the HDMI cable rated for HDMI 1.3 or higher?

Note:
From the maintenance and service guide for that laptop
HDMI v1.3 supporting 1080p with HDCP key

I add this note b/c I don't know what HDCP key means..

[starlinvf]

Its part of the HDCP (Content protection) DRM scheme. Its similar (or is it the same?) to the idiotic idea they initially pushed with encrypted BluRay where every device in the chain had to have a special chip that would authenticate and establish a secure tunnel to each other in order to pass the content data.

The "key" is essentially a digital certificate that allows them to encrypt data as its passed along the chain. Like most certificates, its possible to revoke them by having updated software/hardware recognize them and reject it... but doesn't stop dated equipment that isn't aware of the revocation.

http://en.wikipedia.org/wiki/High-bandwidth_Digital_Content_Protection

[DrHarvey12]

Thanks for the info guys.

After playing around with it a bit more turned out it was me being silly. As I had cloned the screen displays it was limiting to the max resolution supported by both displays. As soon as I set it to single display mode it opened up the 1920x1080 resolution for the tv....DOH!

At least if anybody else has this issue hopefully they'll try this!!!