ALSA audio through 3.5mm jack instead of HDMI

[b3n_ja_m1n]

@grahamh

On my Pi2B, numid=3 is the volume control, numid=4 is the mute switch, so this sort of thing might be better:

amixer cset numid=3 56231,56231
amixer cset numid=4 1

Check with amixer controls

Having said that, I think Kodi doesn’t use alsa on the Pi for hdmi or analogue, but try it. You shouldn’t actually need alsa at all - the only alsa sound sink should be the BT output device. from kodi.log:

02:41:19.391 T:1959120896  NOTICE: Found 2 Lists of Devices
02:41:19.391 T:1959120896  NOTICE: Enumerated PI devices:
02:41:19.391 T:1959120896  NOTICE:     Device 1
02:41:19.392 T:1959120896  NOTICE:         m_deviceName      : HDMI
02:41:19.392 T:1959120896  NOTICE:         m_displayName     : HDMI
02:41:19.392 T:1959120896  NOTICE:         m_displayNameExtra:
02:41:19.392 T:1959120896  NOTICE:         m_deviceType      : AE_DEVTYPE_HDMI
02:41:19.392 T:1959120896  NOTICE:         m_channels        : FL,FR
02:41:19.392 T:1959120896  NOTICE:         m_sampleRates     : 8000,11025,16000,22050,24000,32000,44
100,48000,88200,96000,176400,192000
02:41:19.392 T:1959120896  NOTICE:         m_dataFormats     : AE_FMT_FLOAT,AE_FMT_S32NE,AE_FMT_S16N
E,AE_FMT_S32LE,AE_FMT_S16LE,AE_FMT_FLOATP,AE_FMT_S32NEP,AE_FMT_S16NEP,AE_FMT_RAW
02:41:19.392 T:1959120896  NOTICE:         m_streamTypes     : STREAM_TYPE_AC3,STREAM_TYPE_EAC3,STRE
AM_TYPE_DTSHD_CORE,STREAM_TYPE_DTS_2048,STREAM_TYPE_DTS_1024,STREAM_TYPE_DTS_512
02:41:19.392 T:1959120896  NOTICE:     Device 2
02:41:19.392 T:1959120896  NOTICE:         m_deviceName      : Analogue
02:41:19.392 T:1959120896  NOTICE:         m_displayName     : Analogue
02:41:19.392 T:1959120896  NOTICE:         m_displayNameExtra:
02:41:19.392 T:1959120896  NOTICE:         m_deviceType      : AE_DEVTYPE_PCM
02:41:19.392 T:1959120896  NOTICE:         m_channels        : FL,FR
02:41:19.392 T:1959120896  NOTICE:         m_sampleRates     : 48000
02:41:19.393 T:1959120896  NOTICE:         m_dataFormats     : AE_FMT_FLOAT,AE_FMT_S32LE,AE_FMT_S16L
E,AE_FMT_FLOATP,AE_FMT_S32NEP,AE_FMT_S16NEP
02:41:19.393 T:1959120896  NOTICE:         m_streamTypes     : No passthrough capabilities
02:41:19.393 T:1959120896  NOTICE:     Device 3
02:41:19.393 T:1959120896  NOTICE:         m_deviceName      : Both
02:41:19.393 T:1959120896  NOTICE:         m_displayName     : HDMI and Analogue
02:41:19.393 T:1959120896  NOTICE:         m_displayNameExtra:
02:41:19.393 T:1959120896  NOTICE:         m_deviceType      : AE_DEVTYPE_PCM
02:41:19.393 T:1959120896  NOTICE:         m_channels        : FL,FR
02:41:19.393 T:1959120896  NOTICE:         m_sampleRates     : 48000
02:41:19.393 T:1959120896  NOTICE:         m_dataFormats     : AE_FMT_FLOAT,AE_FMT_S32LE,AE_FMT_S16L
E,AE_FMT_FLOATP,AE_FMT_S32NEP,AE_FMT_S16NEP
02:41:19.393 T:1959120896  NOTICE:         m_streamTypes     : No passthrough capabilities
02:41:19.393 T:1959120896  NOTICE: Enumerated ALSA devices:
02:41:19.393 T:1959120896  NOTICE:     Device 1
02:41:19.393 T:1959120896  NOTICE:         m_deviceName      : pulse
02:41:19.393 T:1959120896  NOTICE:         m_displayName     : OSMC streaming to Bluetooth speaker /
 headphones
02:41:19.393 T:1959120896  NOTICE:         m_displayNameExtra:
02:41:19.393 T:1959120896  NOTICE:         m_deviceType      : AE_DEVTYPE_PCM
02:41:19.394 T:1959120896  NOTICE:         m_channels        : FL,FR,BL,BR,FC,LFE,SL,SR,UNKNOWN1,UNK
NOWN2,UNKNOWN3,UNKNOWN4,UNKNOWN5,UNKNOWN6,UNKNOWN7,UNKNOWN8
02:41:19.394 T:1959120896  NOTICE:         m_sampleRates     : 5512,8000,11025,16000,22050,32000,441
00,48000,64000,88200,96000,176400,192000
02:41:19.394 T:1959120896  NOTICE:         m_dataFormats     : AE_FMT_FLOAT,AE_FMT_S32NE,AE_FMT_S16NE,AE_FMT_S16LE,AE_FMT_S16BE,AE_FMT_U8
02:41:19.394 T:1959120896  NOTICE:         m_streamTypes     : No passthrough capabilities

amixer cset numid=3 56231,56231
amixer cset numid=4 1 did nothing but reduce the volume to 86%, if it helps any, here is the output of amixer controls:

numid=4,iface=MIXER,name='Master Playback Switch'
numid=3,iface=MIXER,name='Master Playback Volume'
numid=2,iface=MIXER,name='Capture Switch'
numid=1,iface=MIXER,name='Capture Volume'

Also, like I said, I know that Kodi doesn’t use ALSA for Analogue or HDMI audio, but Bluetooth audio doesn’t come through Kodi, it comes through a package called ‘a2dp-app-osmc’ from here.