I’m struggling to get the digital volume and mute controls to work on the Logitech S150 speakers. These are pc speakers powered by USB with an onboard DAC (it’s a only a basic player in the kitchen). All works fine other than not being able to use the digital volume control buttons on the speakers.
Bus 001 Device 005: ID 1130:1620 Tenx Technology, Inc.
Bus 001 Device 004: ID 0a5c:bd1e Broadcom Corp.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The /etc/asound.conf is there but empty. In the UI the Volume Options are: ‘Mixer Type’ is Hardware and the ‘Mixer Control Name’ is PCM. That mixer control name only has a PCM option available. Should I be able to select digital or is that dependent upon the USB DAC? is there a way to set it to digital in the asound.conf?
Configuration: Raspberry Pi B+, Volumio v.2.246, USB audio, wifi