Hi everybody,
I recently bought a cheap 50' HDMI cable to use my 4k TV as a second monitor. Unfortunately the cable will not carry a 2160p signal (and only occasionally works at 1080p resolution). Can anybody recommend a fairly priced HDMI cable for this? The cable must be at least 35' (prefer 40'+), as it is run through the walls and attic.
Related: I need to change the resolution on my second monitor (TV), but plugging the HDMI cable in and turning the TV on disables my primary display and shows "no signal" on the TV. How can I switch from "Use only display 2" to "Mirror this display" without being able to see anything?