I'm having a sound output issue on my mac when both my Apogee Duet 2 and Logitech H540 headset are connected to my Macbook pro at boot.
Every time I restart my mid-2012 Macbook Pro my volume control icon in the menu bar is greyed out. If I unplug the Logitech H540 headset and reboot the volume control is solid (dark) and everything works fine. But when both devices are connected (which I need them to be), the volume control is grayed out so I can't make any adjustments from the menu bar.
The H540 headset is Mac compatible and doesn't require/have any drivers. This is a pretty annoying issues because I need to open my sound preferences and switch from the Duet USB output device to another device and then back to the Duet USB device to get things working properly again.
I have my MBP connected to an external Thunderbolt display, and I'm also using a USB hub for some extra USB ports. I always leave the Duet 2 connected to one of the MBP's USB ports, and I've tried the H540 headset in the Display USB's port, Hub's USB port, and connected directly to the MBP. Neither of those three ports made a difference on a reboot.
Is there some way I can delay the headset from connecting at boot? Maybe set it to delay by 30 seconds or something so that the Duet 2 becomes and main sound output and after 30 seconds the H540 is recognized as an additional sound output device?
Do I have any other alternatives or things I can try?