Go into the Setup Menu, Video, HDMI Setup and look for HDMI Control. Turn it off and use an optical cable to send audio from the TV to the receiver, if you use the TV's tuner. If you don't and have cable, satellite or U-Verse, it doesn't matter and isn't needed, anyway.
If HDMI Control is turned off in the receiver, look in the TV's setup menu for it. It may be called CEC. ALso, look at the bottom of the list for Power Off Control- turn that off.
This is part of CEC, which is one of many problems that we'll have to experience if we choose to let HDMI live. Personally, I think they should kill it and start over, without all of the BS that they're trying to force us to put up with.