When you hook up an HDMI TV or DisplayPort monitor with built-in audio device, you might discover that you can't change the volume with the Mac software mixer any more. Volume buttons on your keyboard won't work. You're expected to use the TV remote or volume control on the device.
Mini DisplayPort to HDMI Adapter (4K) Mini DisplayPort to HDMI Adapter (4K) Connect your Mac to any HDMI TV or Monitor using this Mini DisplayPort to HDMI Adapter. Supports both Full HD (1080P) and Ultra HD (4K) displays. After plugging in my Mini Display to HDMI adapter, I checked the Playback Devices, and my HDMI Tv wasn't listed. I installed the latest Intel drivers ( from here ), and still no luck. I know that things should work, and that it's just a driver problem, because when I restart in OSX, everything is detected and works properly. Mini Display Port, connect Mac Book, Mac Book Pro, or Mac Book Air which has Mini Displayport or Thunderbolt port.Only one of the 3 outputs could be used at a time, you cannot use all of them simultaneously. Support Mini Display Port 1.1a Dual-mode input. The HDMI can support audio output for iMac (Late 2009) and Mac Book Pro (Mid 2010).
Apple Mini Display To Hdmi
Here's a trick to get around this limitation. Grab Soundflower and switch the output to your HDMI or DisplayPort device as shown here:
Then option-click the speaker icon in the menu bar. Switch your Mac audio output device to Soundflower:
Hdmi Port Drivers Download
Here, 34UM95 is the display with audio device that won't let me adjust volume.
Hdmi Cable For Mac Mini
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