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Gtx 580 Multi Monitor issue is this normal?

post #1 of 7
Thread Starter 
Hey guys!

Just wondering is this normal.

Oh It's two Gtx 580's in SLI.


Monitor 1 connected to HDMI port
Monitor 2 connected to DVI Port

If I Connect Monitor 2 to the First DVI Port the one furtest away from the HDMI port when windows loads the 2nd monitor won't display, however when the computer posts it will display and the HDMI output will not.

if I connect the 2nd monitor to the Closest DVI port, then when the computer boots it will still display on the 2nd monitor however when windows loads the HDMI port monitor will activate and once inside windows both screens will function.

I'm wondering is this normal or somethings wrong?

Thanks
post #2 of 7
The the HDMI port is suppose to be activated with your NVIDIA software, upon bootup. Your writing is confusing me
Edited by Blackcurrent - 1/23/11 at 2:02am
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post #3 of 7
I believe this is normal, I have my main monitor plugged in through HDMI to mini-HDMI into my 465 as the primary card, then my secondary monitors are plugged in both into my 260's dual DVI.
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post #4 of 7
Thread Starter 
Haha yeah it can be confusing.

The main issue I was having is that if I hook up 2nd monitor to the 1st DVI port and the other to the HDMI It won't work.

The HDMI will display but the DVI will be blank, Windows will still think it's active but the monitor goes blank.

However if I connect the 2nd monitor to the DVI port that's the closest to the HDMI it works as discribed.


Curious question.

If I only connect 1 monitor to the HDMI it will work normally on boot up etc show the bios screen/etc. As soon as I connect another via DVI the DVI defaults to main is that normal?
post #5 of 7
That is because one of the DVI ports shares the same internal clock as the HDMI.
This is only the combo of DVI+HDMI is specific.

And the DVI/HDMI default primary monitor, the default is always the DVI, but when you enter windows, you can set it which one you want to be the primary, and windows will keep it that way.
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post #6 of 7
Thread Starter 
So if I were to run

DVI #1 DVI #2 and HDMI #3 it would work normally? or still give me problems if I threw in a 3rd monitor?


So DVI Port 1 and HDMI port are shared which cause the problems hum.

Update: Says Only 2 Monitors are suppored in SLI mode. I tried to connect a 3rd but I can only use 2 with SLI.

Tried to connect itto the second card as well. So how are you supposed to use 3 monitors with SLI?
Edited by nyxagamemnon - 1/23/11 at 11:12am
post #7 of 7
Quote:
Originally Posted by nyxagamemnon View Post
So if I were to run

DVI #1 DVI #2 and HDMI #3 it would work normally? or still give me problems if I threw in a 3rd monitor?


So DVI Port 1 and HDMI port are shared which cause the problems hum.

Update: Says Only 2 Monitors are suppored in SLI mode. I tried to connect a 3rd but I can only use 2 with SLI.

Tried to connect itto the second card as well. So how are you supposed to use 3 monitors with SLI?
You can only run 2 off 1 card, but with with 2 cards you connect them two of them to the DVI on the primary card/top card, and the 2nd into the dvi closest to the motherboard on the other card.
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