 exocet_cmYou delete it, I'll find itPremium
join:2003-03-23
New Orleans, LA
kudos:2 | [crt/lcd] 3 monitors, only 2 at a time on video card I just got a Radeon HD6750 Vapor-X video card. It comes with 2 DVI, 1 HDMI, and 1 DisplayPort.
I have three Acer LCD monitors that are known, working monitors. All three have DVI-D and HDMI ports.
I cannot, for the life of me, get the damn video card to display all three monitors at the same time. Everywhere I read it says it is possible but I can't get the third monitor, whichever one I pick as the third, to display.
The graphics card sees the third monitor, and I can move the DVI, DisplayPort, and HDMI cable between the monitors and they all work, just not at the same time.
Windows 7 tells me the configuration cannot be saved at this time.
What do I need to do?
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"I have measured out my life with coffee spoons..." - T.S Eliot
"I have often regretted my speech, never my silence." - Publilius Syrus
Ma blog: »www.johndball.com |
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Reviews:
 ·WestNet Broadband
| You need at least 1 hooked via display port.
»support.amd.com/us/kbarticles/Pa···igs.aspx
quote:
Monitors:
• AMD recommends DisplayPort Display monitors, as they offer optimal flexibility with the highest number of display outputs
• Depending on the specific graphic card and operating system, ATI Eyefinity technology can support up to six displays. For configurations using more than two displays, additional displays must have DisplayPort connectors.
The specs off this link suggests Eyefinity is fine and supported - are you running the latest drivers?
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The only thing necessary for the triumph of evil is for good men to do nothing - Edmund Burke
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exocet_cmYou delete it, I'll find itPremium
join:2003-03-23
New Orleans, LA
kudos:2 | Done already. Tried HDMI and every combination one could image.
I am running the latest drivers, just updated them tonight.
I could give a sh*t about Eyefinity and that is all ATI/AMD wants to talk about in their support docs, I just want multiple monitors. I'm using this for work (with an occasional game or two) but productivity is the biggest thing I'm looking for and I can't be as productive without my third monitor. |
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 JahntassaWhat, I can have feathersPremium
join:2006-04-14
Conway, SC
kudos:4 | For configurations using more than two displays, additional displays must have DisplayPort connectors.
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exocet_cmYou delete it, I'll find itPremium
join:2003-03-23
New Orleans, LA
kudos:2 | said by Jahntassa:For configurations using more than two displays, additional displays must have DisplayPort connectors.
Key phrase. Unless one of those monitors is native DisplayPort, or you have an ACTIVE DisplayPort adapter (the ones you have are passive, just electrically wired to DVI), you won't get more than two of your monitors working. None are native DP. So I need an active DisplayPort adapter, probably one that is ATI certified?
»support.amd.com/us/eyefinity/Pag···les.aspx
which points to -->
»accellcables.com/products/Displa···tive.htm
which points to -->
»www.amazon.com/Accell-B087B-005B···2&sr=8-1
--
"I have measured out my life with coffee spoons..." - T.S Eliot
"I have often regretted my speech, never my silence." - Publilius Syrus
Ma blog: »www.johndball.com |
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exocet_cmYou delete it, I'll find itPremium
join:2003-03-23
New Orleans, LA
kudos:2 | reply to norwegian
said by norwegian:You need at least 1 hooked via display port.
»support.amd.com/us/kbarticles/Pa···igs.aspx
quote:
Monitors:
• AMD recommends DisplayPort Display monitors, as they offer optimal flexibility with the highest number of display outputs
• Depending on the specific graphic card and operating system, ATI Eyefinity technology can support up to six displays. For configurations using more than two displays, additional displays must have DisplayPort connectors.
The specs off this link suggests Eyefinity is fine and supported - are you running the latest drivers? So even though I have 2 DVI, HDMI, and DP, running more than two monitors on DVI, DVI, and HDMI won't work... I mean, I've tried it and it doesn't work but WTF?
Why doesn't it work?
--
"I have measured out my life with coffee spoons..." - T.S Eliot
"I have often regretted my speech, never my silence." - Publilius Syrus
Ma blog: »www.johndball.com |
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matt5
join:2001-10-06
Lagrangeville, NY | Does it really matter why not? It has to do with clock generators and stuff... |
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exocet_cmYou delete it, I'll find itPremium
join:2003-03-23
New Orleans, LA
kudos:2 | said by matt5:Does it really matter why not? It has to do with clock generators and stuff...
No, just ranting. |
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BarneyBadAssBadasses Fight For FreedomPremium
join:2004-05-07
00001 | reply to matt5
said by matt5:Does it really matter why not? It has to do with clock generators and stuff...
Actually, it's more about the output generators or controllers if you prefer... in these cards, only 3 outputs can be active at one time...
the DVI's and the HDMI all come out of one set and the display ports come out of another set...
As it works out..... you can have two display ports and a DVI or HDMI or; one Display Port and a 2 DVI's; or One Display Port One DVI and one HDMI....
think of it like this:
------------+
+ ---- output ctlr 1 / DVI | HDMI
Video |
Generator|
+----- output ctlr 2 / Display Port
------------+
so there are two completely different output paths and yes if you don't have native display ports then an active display port converter is needed.... (I have one and mine didn't work so I went native display port monitors all the way)....
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---Barney |
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| reply to exocet_cm
displayport has an embedded clock (in the data). The others need a dedicated clock.
The chip architecture has 2 such clock generators available.
So to run 3 monitors that are not native displayport and need the tdms dedicated clock you have to use an active adapter. |
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