Remove audio device which is not kext When I had some problem with the audio (apparently boom crashed in background) I checked the Sound Preferences in System Preferences, and found a extension called DeviceName, I don't remember myself installing this, and it doesn't have any kext installed along it, How Do I uninstall it?
You have an audio driver.
Check out the path below to see if you can make progress
/Library/Audio/Plug-Ins/HAL

Restart the audio service
osascript -e 'do shell script &quot;launchctl kickstart -k system/com.apple.audio.coreaudiod&quot; with administrator privileges'