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Check with a shorter cable to make sure the ports are good. You might need a signal booster for a 50 feet run, dunno. Because their is no compliance requirement for HDMI cables, anything longer than 15 feet is a crap shoot.

Thanks.

The problem is it use to work fine and it works with my integrated graphics card just fine but that is hdmi 1.4 port I think.
[doublepost=1565107360][/doublepost]The really weird part is the when I connect a short hdmi cable, like you said, from my projector to my dedicated video card it works as well.
 
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