So I have a new 49" curved screen, UE49KU6100.
Pleased with the television, but I've had loads of trouble with the HDMI auto switch feature not working.
Had loads of tech support, nothing helped.
I have super high grade triple insulated gold plated HDMI cabels. these worked fine with my old flat screen telly and the same periferals I still have.
When nothing would work someone said have you got any old HDMI cabels you could try, which I did.
Hey presto the instant switching now works (although sometimes it does not revert back to the telly after switching off, say the DVD).
The thing I find incredible is cheap jack cables work (very thin and not meant for 4k) but Good Quality Brand new, better generation cables don't work.
Anyone had similar problems, or do I in fact have a problem with the HDMI swictching.