Widescreen Gaming Forum

Pulling my hair out with this lol. I'm trying to avoid the whole adaptor/ multi-output/ v-sync/
tearing fiasco by going with this setup. My video card has 4dp outputs. My 3 monitors are identical
and all have dp inputs. I'm using simple cables (mdp --> dp) for each. I cannot get all 3 displays
to work at the same time on dp, no matter what. I have confirmed all monitor dp inputs work. All
video card outputs work, and all the cables work. How? At one time or another, by swapping
everything around, every monitor dp input and every video card output have worked, just not 3 at the
same time, only 2 at any time. I have latest MB bios and 13.5 beta Catalyst video drivers (heard
good things about and seem to work great). I tried swapping cards around, thinking there were bad
outputs on video card, no dice, behaves exactly the same. I tried the bios switch on the cards, no
dice. Could I really have 2 cards that are duds??? Highly doubtful. It seems hardware related. No
matter what, when I try the 3dp route, 2 monitors always light up instantly upon early bootup,the
3rd never gets a signal (yes I make sure monitor input is set to dp) but yet Windows and CCC seem to
recognize 3 monitors!?!? Everything is at stock speeds (at least until I get this figured out)
except for the ram, I enabled XMP in bios. I just built this rig and all software installs are
fresh. I did have different cards at one time though, but they were MSI 7970 NON-Lightning Boost
Edition and had terrible overheating issues. They use the same drivers as the lightnings so I
figured just swapping should be fine. Could it be as simple as re-installing drivers? Also seems
doubtful, especially when it seems to happen at bootup?

Now, if I use 1 dvi/hdmi output with 2dp outputs it works great. Only problem? TEARING! Which is
exactly what I was trying to avoid! Everything really does work well besides that, no glitching,
freezing, crashing, games run awesome. But I paid extra to NOT have tearing and I know this should
work. Just can't figure this out. Any help would be GREATLY appreciated.


CPU Intel Core i7-3770K 3.5GHz Quad-Core
CPU Cooler Corsair H60 54.0 CFM Liquid
Motherboard Asus SABERTOOTH Z77 ATX LGA1155
Memory Corsair Vengeance 16GB (4 x 4GB) DDR3-1600
Storage Mushkin Chronos Deluxe 240GB 2.5" SSD
Storage Western Digital Caviar Black 1TB 3.5" 7200RPM
Video Card 2x MSI Radeon HD 7970 Lightning BE 3GB
Case Corsair 400R ATX Mid Tower
Power Supply SeaSonic 850W ATX12V / EPS12V
Optical Drive Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer
Monitor 3x Asus VE248Q 24.0"
OS Windows 7 64 bit

According to this review http://www.hardocp.com/article/2012/03/20/msi_r7970_lightning_video_card_review it can support 6 screens.... Also confused about your comment on HDMI as according to the photos on this review it doesn't have HDMI.

I'm surprised you can't get 3 working correctly if it supports 6!

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i7 3770K (Ivy bridge) | Corsair Dominator 32GB | Asus P8Z77-V LE Plus Intel Z77 | Corsair H100i | 2 x Gigabyte ATi Radeon HD 7950 in crossfire | NXZT Phantom case | OCZ 1000W Powersupply | Samsung 840 PRO 256GB | 2x OCZ agility 3 60GB SSDs | 2x 1TB HDDs |

Quick question, can you snap a photo of the cables you are using -- particularly a photo showing both port connector ends? Where did you source your cables from? What length are they?

_________________
Brad Hawthorne
Product Manager
Nthusim Pty. Ltd. | www.nthusim.com

Sorry about the confusion. It's actually the dvi output with a dvi/hdmi adaptor.

This is the exact one here. I'm using 3 of these.
http://www.amazon.com/gp/product/B003TSTDHQ/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

Isn't this something about having to have something connected to one dvi? like a dvi dummy plug or attach some random monitor just to try it out

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| i7 3770k @ 4.4, 16GB | 2x Sapphire 7970 GHz @ 1150 | Carbide 540 w H100 & HX850W | 3x Dell U2312HM @ 5760x1080 |

no

_________________
Brad Hawthorne
Product Manager
Nthusim Pty. Ltd. | www.nthusim.com

Odd, the cable length and type looks just fine.

_________________
Brad Hawthorne
Product Manager
Nthusim Pty. Ltd. | www.nthusim.com

Strange.... did you contact MSI customer support and ask them ?

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We gonna send it to outa space!

Yes. They were the ones who told me to update the MB bios which I did. I am calling them again tomorrow to let them know bios update did not help and see what they say. They did confirm that this setup should work, which I knew but it's nice to have confirmation. I'll keep you guys posted and thanks for the replies, VERY much appreciated Keep'em coming