I could barely support 50-60ft at 1080p over physical hdmi for some noc video walls I built for a customer, 4k is likely going to be worse without an active component chip to the extension cable. Quality of the cable is a big part - to get length, I required the use of specifically 24ga wire in the cable, which was quite thick, but not a biggie as most was in walls. I got this up to 75ft, but again only 1080p, not 4k... My suggestion is look at 4k over lan repeaters ala HDBase-T. They are out there, but pricey(er) for 4k - check monoprice . I've used 1080p units like Just Add Power units for video walls, but requires some automation around it too for more than one. Just a single display should be easy to extend over copper with some hdmi adapters at least. -mb On Sat, Dec 7, 2019 at 5:16 PM Aaron Jones wrote: > I have tried three separate cables to connect my Radeon RX580 to a monitor > and none of them work. I need to be able to connect from across my room and > so I have purchased a 20 Foot Cable, a 25 Foot cable, and a 30 Foot cable > with a repeater and none of them will keep a signal at 4K. However, I moved > the 30 foot cable over to the displayport using an adapter and reduced to > 1080p and it works. > > Any one able to recommend a 4K friendly method for connecting my system at > around 20ish feet? > > Thanks, > Aaron > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss