I've got MBP 13 late 2015 - I don't use it much as it's my backup. Everything works fine, except the HDMI port. Going through DisplayPort its' fine, use adaptors to HDMI, VGA whatever - all good. But using the native HDMI port nothing - it detects no screen, screen does not detect it, it just does nothing. Any ideas what it could be? I have done all the PRAM and SMC reset, 4 monitors/tv's tried, different cables. Safe mode too As said it works fine through DisplayPort, but native HDMI seems to be dead. Am I missing something? I have tries deleting various preference files, again nothing. Only thing left is to flatten the machine and start again, but I can't really be bothered to do that. Any ideas?