Displays Prefs are set up so the Epson mirrors the MBP display, and the MBP's internal display resolution is set to match the Epson's (1080p), which appears as 'Epson PJ' in the menubar's Displays pulldown.ġ) The issue I'm having here appears to be different from one with the HDMI connection not working after wakeup (numerous threads about it in Apple Discussions & other forums), since there the HDMI option for sound output device is does show up and is selectable (in the Sound Preferences panel, in the equiv. Receiver's HDMI output is connected to an Epson EH-TW3200 projector's HDMI input (projector is Euro version of the US Epson 8345 it has no audio whatsoever). MBP and receiver are connected via a PNY mini-DP-to-HDMI adapter, which by both its Amazon description & reviews explicitly supports passthrough audio on Macs, and an AmazonBasics HDMI cable (ditto). MBP connected to a Harman Kardon BDS 577 AV receiver's HDMI input (a 5.1 receiver, connected to 5.1 speakers). mid-2012 MBP (non-retina) running 10.8.5 (including latest supplemental 10.8.5, which fixed a different issue with an HDMI audio connection not working after a Mac's wakeup from sleep).

When the projector off, HDMI audio passthrough to the receiver works fine when the projector is on, the Mac forgets it has HDMI sound output and will only use the MBP's internal speakers. I have an MBP connected via HDMI to an AV receiver, whose HDMI output is connected to a projector. Sorry for the length, but I'm trying to supply all relevant info) This is an AV issue, but looks to be Mac-specific, so posting here rather than in the A/V Club.

Hdmi from mac to tv no sound