One of three screens goes black momentarily

My setup until recently:

2x 6950s
3x Qnix displays. One DVDI, two with active DP adapters to mini DP ports.

I just swapped out the 6950s for a PNY GTX 970 and everything works fine... most of the time. Every hour or so one of the two DP screens will black out for a few seconds. It doesn't have time to go into standby mode, but it's like they just lose the signal for three to five seconds then come back. No errors or anything, it's just super annoying.

Doesn't seem to matter what I'm doing at the time. Gaming, browsing, or idle it still happens.

Is there some issue with 970s and DisplayPort adapters?

I get that too with my r9 290.

I have 2 x Asus Panels at 1920x1200 one on DVI and one on HDMI and one QNIX at 2560x1440 on DP (straight cable, no adapters).

Randomly one of the Asus on DVI or HDMI will momentarily show a black screen and like you, gaming, browsing, video watching or idle.

Never happened on the 6950s. Not sure I made that clear. Only happens on the GTX 970.

If you swap screens around, does the black-out stay with the gfx port, or with the screen that moved?

It only happens on whichever panels are plugged into the DisplayPorts. It seems completely random which of the two blanks out and when. The panel plugged into the DVDI port (with no adapter) never blanks out. None of the three blank out when plugged into the 6950s.

Headcase_Fargone said:

Never happened on the 6950s. Not sure I made that clear. Only happens on the GTX 970.

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I know, I was just suggesting that it isn't limited to Nvidia, that it happens on AMD as well.

I also noticed that it happened specifically after I upgraded the drivers about 7 months ago, but I can't remember the version I upgraded from and to.

Happened to me as well. I am running 3 1440p Samsung S32D850T monitors powered by 1 GTX 770 4GB. I think my solution was to change the connections around. I originally was using like 1 DVI, HDMI, DP. I've now swapped over to not using any DisplayPort.

You are using active adapters - I thought the GTX970 only needs passive adapters?

I get a similar momentary black screen (less than a second) over HDMI on a Titan X and my previous card the GTX 980.

I'm guessing it's either the display (Sony Bravia TV), HDMI cable or nVidias drivers.

The black screen flicker is random and happens while gaming, browsing, watching movies etc but seems to happen most when the display is first turned on then gets less and less frequent over time.

rtangwai said:

You are using active adapters - I thought the GTX970 only needs passive adapters?

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I wasn't aware of that, but I'll do some checking. They're just what I happened to have already since the 6950s require them. I was really hoping someone would reply with "Oh yeah, that's a known issue with Nvidia and active DP adapters. You just have to do X to fix it." Doesn't look like this is an overly common issue though.

I'm guessing it's either the display (Sony Bravia TV), HDMI cable or nVidias drivers.

Click to expand...

In my case I can be 100% certain that it's not the cables, adapters, or displays. They work perfectly on another card.