On-board AMD 4250 displaying 1776x1000 on a 1080p HDTV?

[jaydee]

I searched the forums and google and wrote to AMD tech support to no avail. System in sig, running with onboard Radeon 4250 graphics. I've been running it on 1680x1050 20" LCD via DVI just fine.

I wanted to tried out my new blu-ray drive last night for the first time, so I connected it to my Vizio 32" 1080p HDTV (I think it's this one http://www.amazon.com/VIZIO-quot-108.../dp/B001GKK14I) via HDMI port. I tried setting it to output 1920x1080, but there was a 1" black border around the picture and it looked like crap. I set the resolution to 1776x1000 and everything was crisp, yet the border remained. Tried messing with a few settings briefly, but couldn't get it to work. What's going on here? Don't recall which Catalyst driver set I'm running, could that be the problem, or is the onboard graphics really not capable of running 1080p? Or is it the TV?

Thanks,
Jim

 

[cusideabelincoln]

Put the TV in PC mode.

 

[jaydee]

Went through the whole TV menu and couldn't find a "PC mode" or anything that resembles such.

 

[Vdubchaos]

Go into Source settings/rename settings and make sure the HDMI port is set to PC.

For whatever reason that enables TVs to show correct resolution. I know my Samsung had the same issue, couldn't get it to show correct resolution for the life of me...until I did some searching and setting that Source HDMI port to PC did the trick.

It's weird, not sure why you would even have to do that....but it it what it is.

Keep us posted.

 

[jaydee]

I still don't see what you mean. I just went through the manual and don't see any sort of "source to PC" mode anywhere. The only hint I'm getting via the manual, is manually setting the "H/V Position", so I'll try that when I get home tonight, but still not sure if that's going to work or not.

http://vizio.com/documents/downloads/hdtv/VOJ320F1A/171Manual.pdf

 

[ModestGamer]

my 760g motherboard does this just fine at 1920x1080. If you just playing blueray movies etc.

You need to go into Catalyst control Center and adjust your underscalling more then likely for that display.

 

[Vette73]

Yep your 1080 was working fine, black border, but you need to change the settings for the onboard video.
Make sure you have the newwest drivers, set to 1080p, and then...

http://www.aoclarkejr.com/ati-catalyst-9-9-overcan-and-underscan-options.html

or

http://www.bit-tech.net/blog/2010/03/03/how-to-fix-underscan-in-ati-catalyst-driver/

 

[Vdubchaos]

I still don't see what you mean. I just went through the manual and don't see any sort of "source to PC" mode anywhere. The only hint I'm getting via the manual, is manually setting the "H/V Position", so I'll try that when I get home tonight, but still not sure if that's going to work or not.

http://vizio.com/documents/downloads/hdtv/VOJ320F1A/171Manual.pdf

1st like others said, make sure your scaling is set proper in ATI control panel

Vizio might have a different name for "Source" basically the button that you switch which port you are viewing. Which HDMI port, Cable/TV or VGA etc. There should be a Mode/Source setting (possibly) and you should be able to change the HDMI port you have your PC hooked up to to PC.

Chances are it's just scaling is not set right...make sure its set to 0%