I am using an external monitor that worked fine in CS5.5 as long as I set the Mercury play engine to software only. Now the external monitor doesn't work. In the tutorial it say to use the playback settings to select the external monitor. The playback setting selection is greyed out. Now what? Really need the external monitor for the TV work I do.
What kind of monitor and how is it connected?
I found the issue. You can now use the Mercury hardware acceleration settings but must set up the preferences/ playback and set up the Adobe DV selection, only then will it work. Problem is now that with hardware excelleration on the transitions are no longer smooth. you must disable the Mercury hardware to software selection to get a smooth transition. I hope they fix this soon.
This is not a 'problem' that requires fixing. Hardware acceleration uses Linear Light Processing, which more closely approximates the way the human eye sees light than does the old method used by software mode.
What you're seeing is working as Adobe intended it to work.