HP Z38c Screen flicker and blackout

[milleniumaire]

I have a Z38C curved monitor, which starts to flicker (horizontal lines across the screen) and sometimes completely blacks out for a fraction of a second.

HP support were very good when I reported the issue to them and the monitor was replaced under warranty.  Unfortunately, less than an hour into using the replacement "new" monitor the same thing is happening.

I originally spent weeks trying to troubleshoot this issue; changed cables, tried different graphics cards, updated all software (BIOS, drivers etc) but without any success and because it started to happen after the monitor had been in use for some time, then got gradually worse, I assumed it was a hardware issue.

Given that the 2nd monitor is now doing exactly the same, either these monitors are very poor quality or something else is going on.

I have a £1000 monitor that is driving me insane!!!! 

Any thoughts on how I can resolve this?

[milleniumaire · Accepted solution]

A disappointing lack of response from this HP forum.

Still, I shall update it with a solution I found.

I purchased a Displayport (v1.2) to HDMI (v2.0) adapter.  This plugged into the displayport socket on my PC and then then one end of a 4K rated HDMI cable was plugged into the other end of the adapter, with the other end of the HDMI cable plugged into the Z38c monitor.

This works and I now get 3840x1600 @ 60Hz.

This is yet another indication that the displayport on the Z38c product does not work correctly, not just on the current monitor I have, but also on the previous 2 monitors I tried, suggesting there is an issue with this product that HP need to investigate.

I say this because when ANYTHING is plugged into the Z38c displayport I get blackouts and horizontal flashing.  This adapter is plugged into my PC displayport and clearly the signal from that works perfectly otherwise I would be getting issues through the HDMI cable also.