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Item#: N82E16814121779

3 out of 5 eggs DisplayPort issues connecting to an ASUS monitor 11/14/2013

This review is from: ASUS GTX780-DC2OC-3GD5 G-SYNC Support GeForce GTX 780 3GB 384-Bit GDDR5 PCI Express 3.0 HDCP Ready SLI Support Video Card


Quiet, even when running under load. Card is sturdy and does not "droop" in the case like my previous Radeon HD 4850 x2 card (another large card)


I connected this brand new card to my brand new ASUS monitor (27" PB278Q) via the DisplayPort. I wanted to use the ASUS monitor as my primary monitor and a 5-year old Dell monitor connected via a DVI port as secondary monitor. No issues using the Dell on the DVI, but no signal on the DisplayPort. I used the NVIDIA control panel software to try and configure the ASUS monitor for use. The software could detect the make and model of the monitor, but would let me configure for use. The monitor reported that it was getting no signal on the DisplayPort. (I am using the DisplayPort cable that came with ASUS monitor). Switching the ASUS monitor over to the other DVI port worked fine.

The Dell monitor also has a DisplayPort on it. Connecting it via DisplayPort to the GTX780 worked fine. No software configuration required.

My motherboard also has a DisplayPort on it, so after I removed the GTX780 from the PC and then connecting either the Dell or the ASUS monitor to that DisplayPort works fine. Again no software configuration required to get this to work.

Putting the graphics card back into the PC, and plugging the ASUS monitor back into the DisplayPort of GTX780, did not work, and the NVIDIA control panel software does not automatically detect the monitor. However, this time when I clicked on the control panel's link "My display is not shown ...", not only did it detect the monitor, it even allowed me to configure it for use, so now I am able to use my primary monitor via DisplayPort.

I gave this information to ASUS technical support [ID=RWTM20131114030049160-782]. They were not able to shed any light on the issue. Just said there might a hardware issue, and suggested I could RMA the card back to them. (Not clear to me, that it is more likely to be a hardware issue, than say a issue with the driver or BIOS. Even it is hardware issue, why would it be a hardware issue with the card, rather than say the ASUS monitor?)

Given that it seems to working at the moment, and don't think I will send it back. But still feel a little queasy that connecting a brand new high-end ASUS monitor, to a brand new high-end ASUS graphics card, has this difficulty in connecting.

Other Thoughts:

ASRock Z87 Extreme4
Intel Core i5-4670K
Cooler Master Hyper 212 EVO
G.SKILL Ripjaws X 16Gb (2 x 8GB) DDR3 1600 Cas 9
Asus GTX780 DirectCU II OC
ASUS PB278Q 27" 2560 x 1440 Monitor
Western Digital Green WD10EZRX 1TB (2 in RAID 1)
SSD SAMSUNG 840 Pro Series 128GB MLC
SilverStone SDP08 Nickel 2.5 to 3.5 bay converter
Cooler Master CM 690 case
Corsair TX650W PSU

Manufacturer Response:

Dear Ben,

If possible, please try connecting the PB278Q to another computer via DisplayPort and see if there’s no problem. If you require further assistance or you would like to discuss this topic with me, then please reach out to me at and include case#3163149 in the subject line. ASUS Customer Loyalty is here to listen and respond to your concerns and to help you with a positive ASUS experience.

ASUS Customer Loyalty

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Item#: N82E16814121779
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