Yet another "lvl0: VolumeControl::init() - Failed to find mixer elements" error help request (sorry; please read). - RetroPie Forum
USB Audio Card lv10 Volume Control: Failed to find mixer ((Solved)) - RetroPie Forum
On RPI2 with USB sound adapter, ES always reports VolumeControl::init() - Failed to find mixer elements! · Issue #433 · Aloshi/EmulationStation · GitHub
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How to Fix Failed to find mixer elements - Fastoe
Keeps coming back - Failed to find Mixer Elements - RetroPie Forum
Background Music Compatible with Video Preview Audio? - RetroPie Forum