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Windows 7: Either DVI or HDMI?

03 Oct 2009   #1

Windows 7
Either DVI or HDMI?

Hello everyone;

I am looking for some help. I have a desktop computer that I would like to connect to a Samsung T220 lcd through DVI and a Panasonic 42" plasma tv through HDMI. The computer has a Gigabyte GA-MA78G-DS3H mobo with integrated ati graphics. Ok, the problem is that on their own, the monitors work fine. If I want the monitor to work, I have to take out the hdmi cable from the comp, and only leave the DVI. If I plug in the hdmi, only the TV will work and windows does not see the monitor. I would like to run dual monitors on this comp and I know it SHOULD be possible. Can anyone help me out here?


My System SpecsSystem Spec
03 Oct 2009   #2

Microsoft Community Contributor Award Recipient


Can't you just pick the displays you want to use using the display settings from Control Panel?

Some display adapters consider DVI and HDMI being the same, i.e. you can use one or another but not both at the same time. In this case could you use VGA to connect one the displays?


Either DVI or HDMI?-display2.png

My System SpecsSystem Spec
03 Oct 2009   #3

Windows 7

The thing is, I'd like to use the DVI and not the analog vga if possible. The pictre I attached is with the plasma tv hooked up through hdmi. This is what it showed. I tried to force the vga, hoping that would help but no deal. I haven't tried to connect the monitor through vga, but I leave that as a LAST resort.

Is there nothing else I can do other than the VGA option instead of DVI?

Attached Thumbnails
Either DVI or HDMI?-untitled.jpg  
My System SpecsSystem Spec

03 Oct 2009   #4
Microsoft MVP

Win 7 Ultimate x64

It may or may not be the problem, but how much memory is allocated to the onboard video in the bios? Before checking in the bios (unless you change it will be at the default of Auto) grab this,

GPU-Z Video card GPU Information Utility

hopefully it will detect your card and report how much ram it has. If it is 128 MB or less, go into the bios and bump it up to 256 MB, and see if it will then allow you to run both displays.

It should be able to run dual displays as part of the 780G (and I assume the rest of ATI's integrated HD series video solutions) spec is to allow for the running of up to 4 displays when an ATI video card is installed,

Manage Your Digital Life Like Never Before

The AMD 780 Chipset series lets you connect to a wide range of the latest HD panels by supporting numerous display technologies. Take advantage of ATI SurroundView™ to support up to four monitors when you add a Radeon™ graphics card.
AMD 780G Chipset

P.S. I have the same chipset on an Asus motherboard, and the surroundview works very well with my 32" LCD TV connected to it, and a 22" and 19" LCD monitor connected to my video card, with the surroundview enabled.
My System SpecsSystem Spec
03 Oct 2009   #5

Microsoft Community Contributor Award Recipient


Your screenshot shows you have chosen the option Show desktop only on 1. Can't you choose display number 2 and then choose Extend desktop to this display?

My System SpecsSystem Spec

 Either DVI or HDMI?

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