I have a bizarre problem with my Hyundai W240D monitor, I have it connected to my video card via a DVI to HDMI adaptor and then via a long HDMI cable. I also have a HP ZR24w monitor connected the same way (the only difference is that it also has a HDMI couple and a HDMI to DVI cable). The HP has no problems at all.
Since I cannot describe the problem in words, here is a video I took of it happening ... http://www.youtube.com/watch?v=WhHNigEzrRw
Has anyone seen anything like this before? I suspect it's the cable that is at fault. As I also get horizontal lines flickering across the width of the entire screen depending on what it on the screen at the time they appears at different positions.
The Effect! It starts off by the colours going "hatched", fading in between looking focused and defocused (the hatching), then blocks of distortion appear (usually at the bottom), the it seems to fade to black and back again, but still with the image underneath. Eventually it ends up with a kind of black "blob" taking over the screen and spreading to the edges but not quite blacking out the whole screen.
Additional Information My setup is as follows ...
- W240D Monitor connected to 1st DVI output of video card via DVI to HDMI adaptor and long HDMI cable
- HP ZR24w Monitor connected to 2nd DVI output of video card via DVI to HDMI adaptor and long HDMI cable, then to a HDMI coupler and a short HDMI to DVI cable
The reason for this is that I have my PC located in the loft while my monitors (and all USB equipment, via an active USB extension cable) are in my office.
The HP monitor has no problems at all with either cable connected to it, and neither does the Hyundai monitor when only one cable is in use. But when I plug both monitors in I get the effect shown in this video.
So, I've tried the Hyundai monitor plugged into both HDMI cables coming from the loft and only when both are plugged in does it have the problem. But the HP monitor is perfect. So, it could be interference between the two cables, but the HP doesn't have a problem. So, maybe there is a fault/design flaw in the Hyundai's HDMI connection where it's overly sensitive to interference where the HP isn't.
I am still completely stumped by this.