So I bought a PS4 maybe 2 weeks ago. Everything works fine except one weird thing: My PS4 is plugged to a Toshiba 720p TV, and when I turn on my PS4,then switch my TV input to PS4 , the screen flicked from Signal(black) to no signal(blue) for approx. 20 seconds(the time vary a lot-sometimes 8 seconds,sometimes more than 40 seconds),a nd after that the PS4 screen shows up correctly. This also happens if the PS4 is on,and then switch input to regular TV,and then switch back to PS4,screen flicker again but for a shorter time(5-8 seconds approx.). This happens even when PS4 wakes up from sleep mode. I had a Chromecast plugged in this HDMI port before and everything was fine - no screen flickering. My PS4 is set to display at 720p (not automatic). I tried automatic, 1080p, but to no avail. I doubt it would have caused this issue, but when I installed my PS4, I made this quick and plugged AC cord BEFORE HDMI when the instructions said to plug HDMI first.
EDIT:I tried to disable HDCP and now its works like a charm,no delay before PS4 screen showing up,I immediatly see the PS4 logo :) But I mean I guess its better to enable it? The screen still show up if HDCP is enabled,it just takes more time; and the time vary alot(very random); for example,I tried it this afternoon with HDCP enabled and it took maybe 3-4 seconds and the screen showed up,while yesterday it took 20+ seconds.Its really random. But if the screen show up after some time,it means that the TV ended sending a "response" to the PS4? Because if I go in the settings of PS4,HDCP is enabled.Screen just show up instanly when HDCP is disabled,while when enabled it takes a little bit more time.For information purpose,my TV is a 2007 Toshiba,model 32HL57 with 2 HDMI port an apparently this TV is HDCP enabled(I searched my model on the web).Maybe that 8ms response explain the little delay before the screen show up when HDCP enabled? Or else I guess it would be better to let HDCP enabled even if screen takes time to show up? At least now we know that its because HDCP.