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Setting up three monitor display on win 7 laptop

Last response: in Graphics & Displays
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December 28, 2011 2:22:41 AM

Hey guys,
I just got a new HP Pavilion dv6t quad edition and am trying to extend my desktop on to two additional monitors, to yield a three-monitor display including the on-board display. The laptop has a radeon hd 6490m dedicated graphics card in addition to the integrated intel graphics. The laptop has an hdmi and vga port, both of which I am using to connect to the two external displays.

My problem is that windows 7 detects all three monitors but will only allow me to set up extended desktop on any two, but not all three. Does anyone know why this is happening?

My best guess is that windows is trying to use the integrated graphics card which doesn't support a 3 monitor set up, but I'm not sure if that's the reason, nor how to fix it.

Any help is much appreciated!!
John
a b C Monitor
December 28, 2011 3:40:13 AM

Try disabling the HD graphic? It's not supporting eyefinity like the radeon so it will not support 3 monitors. Maybe in the bios there is an option, or maybe you can disable it by disabling the driver and only enabling the radeon's driver.
December 28, 2011 3:51:24 AM

By HD graphic you mean the intel HD, right? I was considering doing that but I was scared that if windows was using the intel hd graphics and I disabled it, I wouldn't have any display anymore! Should it automatically switch to the radeon graphics if I disabled the intel hd?
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December 28, 2011 3:52:13 AM

Also, thanks for your reply :) 
a b C Monitor
December 28, 2011 4:17:31 AM

When I disable my Intel HD in my laptop, it will have black screen first. But then you press that power button to do reboot. And then when the windows come up the display will come with 800x600 resolution. Then try to update Radeon drivers and then reboot. It should use the Radeon I think. Also have you try disabling in the BIOS? Because I think if there is it will be easier for you. Or also if there is a special HP program that can switch between Graphic cards it's easier and good.
December 28, 2011 4:31:33 AM

I dont thing you can if it doesnt support eyefinity.
December 28, 2011 7:31:21 AM

Quote:
When I disable my Intel HD in my laptop, it will have black screen first. But then you press that power button to do reboot. And then when the windows come up the display will come with 800x600 resolution. Then try to update Radeon drivers and then reboot. It should use the Radeon I think. Also have you try disabling in the BIOS? Because I think if there is it will be easier for you. Or also if there is a special HP program that can switch between Graphic cards it's easier and good.


I went into the bios, changed the changeable GPU setting from dynamic to fixed, which allowed me to keep my computer set using Radeon, but I am still having the same problem :(  Maybe I'll have better luck tomorrow.
a b C Monitor
December 28, 2011 7:43:51 AM

When you set it to fixed are you sure you choose ''radeon'' instead of ''íntel''?

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a b C Monitor
December 28, 2011 8:22:02 AM
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The chipset requires a Display port for that functionality I think.

http://www.notebookcheck.net/AMD-Radeon-HD-6490M.43843....

"Thanks to Eyefinity the graphics chip is able to theoretically drive up to 4 monitors simultaneously. However, this only works if the laptop features enough DisplayPort outputs."
December 28, 2011 6:51:16 PM

Well frack. What a bummer. I guess I'm condemned to (gasp) only two monitors. Thanks for your help guys.
December 28, 2011 7:00:14 PM

refillable said:
When you set it to fixed are you sure you choose ''radeon'' instead of ''íntel''?


Yup, at least according to the radeon control panel. The computer's also much hotter than it usually is, which to me is a crude confirmation.

a b C Monitor
December 29, 2011 3:08:10 AM

Well yeah, you need display port...
December 29, 2011 5:53:32 AM

Best answer selected by jldstuff393.
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