If I want to use HD on Amazon Prime Instant Video I have to leave my TV on because my desktop display is not HDCP compliant but my secondary display the TV I hardly use is. Weirdly enough I prefer watching movies and TV at my desk. If I turn the TV off the Amazon player will detect and immediately switch back to SD only.
I try to go legit with my media and all they want to do is figure out ways to fuck me over and make piracy still the better product.
edit: Hahah and if I try to watch it on my TV display I need to leave my non-HDCP desktop display on or else it reverts... Basically both have to be on for me to have HD content. That is against their own idiotic rules, a pop-up came up saying all displays need to be HDCP, except my only working configuration is one HDCP and one non-HDCP.
edit2: Okay I figured it all out... Apparently both my displays are HDCP compliant but if I have them both hooked up they need both be powered on. If I physically unhook one or the other Prime will let me play HD on either.
Desktop and TV cabled and both powered = HDCP Desktop and TV cabled only one powered = No HDCP Only Desktop cabled and powered = HDCP Only TV cabled and powered = HDCP