Topic Title: Dual Graphics Cards and Triple Monitors won't stay active after a re-boot
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Created On: 10/26/2012 04:37 PM
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 10/26/2012 04:37 PM
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I can't get both graphics cards and all 3 monitors to stay active after a re-boot.
Graphics Card
AMD Radeon HD 6550D - AMD A8-3820 APU (on-board)
AMD Radeon HD 6670 - Gigabyte R667D3-1Gi Radeon HD 6670 1GB 128-bit DDR3 PCI Express 2.1
AMD Catalyst Driver Version, and Driver History
AMD, Version 12.10, (12-10_vista_win7_win8_64_dd_ccc_whql_net4)
Operating System
Windows 7 Home w/SP1, 64-bit
Motherboard or System Make & Model
Asus CM1740-US-2AG (ASUSTek CM1740 (FM1))
Power Supply
AC Bel HBA008-ZA1GT 350, 350 watts

Display Device(s) and Connection(s) Used
Acer G215H via HDMI to 6670
Acer G235H via DVI to 6670
Acer S220HQL via DVI to 6650 on-board

Applications and Games

Windows 7 in general

CPU Details
AMD A8-3820 (2.50GHZ)

Motherboard BIOS Version
Asus Desktop EFI Bios V.0901 x64, 05/18/2012

System Memory Type & Amount
8GB DDR3 @800MHz (via 2 - ASint 4GB DDR3 @800MHZ)
Issue Details
I have a 6550D (from APU) with 1 monitor attached to it via DVI and a 6670 (std card) with 2 monitors attached to it via DVI & HDMI. My Bios has the option to pick which graphics adapter should be the primary adapter and I set it to the PCIe 6670 card. When Windows comes up, both monitors on the 6670 work but the monitor on the 655D doesn't. Windows "See's"both graphics cards though. So I install the AMD 12.10 drivers and it finds both graphics cards and all 3 monitors. Everything works fine, I have no problems. I can use the AMD desktop software to configure everything how I want. I can use Eyefinity, I can use all 3 monitors separately, extend my primary display across all 3, extend the primary across 2 of them and use the 3rd separately, I can run games (Diablo3) on 1 monitor  or extend it onto more monitors. Everything works like I expect it to untill.... I ReBoot. When I reboot, I lose the monitor(s) attachd to the graphics card which isn't set as the primary in the Bios. I run the display drivers software again and both cards and all 3 monitors come up, as before, and all works fine, as before.
I don't know where to even begin to try to figure out what is going on. It could be an easy fix or a Windows problem, I don't know. So... I thought I would start here where people deal with multi cards/monitors and see if someone can point me in the right direction.


Edited: 10/26/2012 at 04:51 PM by blevensd
 10/29/2012 08:55 AM
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Okay, just wanted to ask a second question and see if anybody can answer it. That way I can get a little farther in my quest to fix this problem.

Same PC, Graphics, Etc from above post.


I've got a tech friend that keeps insisting that I have to get/use an Active Displayport  adapter. I don't think that has anything to do with my problem. I'm not hooking up 3 monitors to 1 graphics card, I'm only hooking up 2 monitors to each graphics card so I should not need to use Active Displayport. 


I have an older PC with an on-board 4000 graphics and an add-on 4600 graphics card. I have 2 monitors hooked to each graphics card (which is exactly what I am trying to do above) and all 4 monitors come up and work just fine in Win7.


So... has technology/hardware/software changed so much that I now have to use Active Display Port to accomplish the same thing? Isn't Active DP for 3 or more mons on same card only?



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