Mac Volume up/down doesn't change Bluetooth Speaker Volume
Hi Community,
I have a problem which started to appear around 1 month ago and didn't stop.
I own a 2010 Macbook Pro and connected a Denon Envaya Mini Bluetooth speaker to it.
When I got the speaker the "system" volume change also affected the speaker but it doesn't anymore.
It doesn't work via volume up/down buttons, menu bar settings or system settings.
When changing via up/down buttons you can see the volume overlay and the volume dots going up and down without effect.
Sometimes the speaker goes mute, even if 1 dot is still there.
Already tried different resets (PRAM,...) and Safe Mode boot. Also reset the Denon speaker several times.
The volume up/ down still works with my iPhone 5s with the same speaker.
MacBook Pro, OS X Yosemite (10.10.3)