!!################################
!!ALSA Information Script v 0.4.64
!!################################

!!Script ran on: Sun Mar 24 16:35:14 UTC 2019


!!Linux Distribution
!!------------------

ID_LIKE=debian


!!DMI Information
!!---------------

Manufacturer:      
Product Name:      
Product Version:   
Firmware Version:  


!!Kernel Information
!!------------------

Kernel release:    4.14.79-v7 
Operating System:  GNU/Linux
Architecture:      armv7l
Processor:         unknown
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     k4.14.79-v7 
Library version:    1.1.3
Utilities version:  1.1.3


!!Loaded ALSA modules
!!-------------------

snd_bcm2835
snd_aloop


!!Sound Servers on this system
!!----------------------------

No sound servers found.


!!Soundcards recognised by ALSA
!!-----------------------------

 0 [ALSA           ]: bcm2835_alsa - bcm2835 ALSA
                      bcm2835 ALSA
 1 [Loopback       ]: Loopback - Loopback
                      Loopback 1


!!Modprobe options (Sound related)
!!--------------------------------

snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_aloop: index=1 enable=1 pcm_substreams=4 id=Loopback


!!Loaded sound module options
!!---------------------------

!!Module: snd_bcm2835
	enable_compat_alsa : Y
	enable_hdmi : N
	enable_headphones : N
	force_bulk : N

!!Module: snd_aloop
	enable : Y,N,N,N,N,N,N,N
	id : Loopback,(null),(null),(null),(null),(null),(null),(null)
	index : 1,-1,-1,-1,-1,-1,-1,-1
	pcm_notify : 0,0,0,0,0,0,0,0
	pcm_substreams : 4,8,8,8,8,8,8,8


!!ALSA Device nodes
!!-----------------

crw-rw----  1 root audio 116,  0 Mar 24 11:33 /dev/snd/controlC0
crw-rw----  1 root audio 116, 32 Mar 24 11:33 /dev/snd/controlC1
crw-rw----  1 root audio 116, 16 Mar 24 11:33 /dev/snd/pcmC0D0p
crw-rw----  1 root audio 116, 17 Mar 24 11:33 /dev/snd/pcmC0D1p
crw-rw----  1 root audio 116, 56 Mar 24 11:33 /dev/snd/pcmC1D0c
crw-rw----  1 root audio 116, 48 Mar 24 11:33 /dev/snd/pcmC1D0p
crw-rw----  1 root audio 116, 57 Mar 24 11:33 /dev/snd/pcmC1D1c
crw-rw----  1 root audio 116, 49 Mar 24 11:33 /dev/snd/pcmC1D1p
crw-rw----  1 root audio 116,  1 Mar 24 11:33 /dev/snd/seq
crw-rw----  1 root audio 116, 33 Mar 24 11:33 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  80 Mar 24 11:33 .
drwxr-xr-x 3 root root 260 Mar 24 11:33 ..
lrwxrwxrwx 1 root root  12 Mar 24 11:33 platform-snd_aloop.0 -> ../controlC1
lrwxrwxrwx 1 root root  12 Mar 24 11:33 platform-soc:audio -> ../controlC0


!!ALSA configuration files
!!------------------------

!!System wide config file (/etc/asound.conf)

pcm.!default {
  type plug
  slave.pcm {
    type multi
    slaves {
      # Hardware device
      a { channels 2 pcm "hw:0,0" }
      # Loopback device
      b { channels 2 pcm "hw:Loopback,0" }
    }
    bindings {
      0 { slave a channel 0 }
      1 { slave a channel 1 }
      2 { slave b channel 0 }
      3 { slave b channel 1 }
    }
  }
  ttable [
    [ 1 0 1 0 ]  # left -> a.left, b.left
    [ 0 1 0 1 ]  # right -> a.right, b.right
  ]
}


!!Aplay/Arecord output
!!--------------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 6/7
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3

ARECORD

**** List of CAPTURE Hardware Devices ****
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3

!!Amixer output
!!-------------

!!-------Mixer controls for card 0 [ALSA]

Card hw:0 'ALSA'/'bcm2835 ALSA'
  Mixer name	: 'Broadcom Mixer'
  Components	: ''
  Controls      : 6
  Simple ctrls  : 1
Simple mixer control 'PCM',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback -10239 - 400
  Mono: Playback -27 [96%] [-0.27dB] [on]

!!-------Mixer controls for card 1 [Loopback]

Card hw:1 'Loopback'/'Loopback 1'
  Mixer name	: 'Loopback Mixer'
  Components	: ''
  Controls      : 48
  Simple ctrls  : 0


!!Alsactl output
!!--------------

--startcollapse--
state.ALSA {
	control.1 {
		iface MIXER
		name 'PCM Playback Volume'
		value -27
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '-10239 - 400'
			dbmin -9999999
			dbmax 400
			dbvalue.0 -27
		}
	}
	control.2 {
		iface MIXER
		name 'PCM Playback Switch'
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.3 {
		iface MIXER
		name 'PCM Playback Route'
		value 0
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '0 - 2'
		}
	}
	control.4 {
		iface PCM
		name 'IEC958 Playback Default'
		value '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write'
			type IEC958
			count 1
		}
	}
	control.5 {
		iface PCM
		name 'IEC958 Playback Con Mask'
		value '0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access read
			type IEC958
			count 1
		}
	}
	control.6 {
		iface PCM
		name 'IEC958 Playback PCM Stream'
		value '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
		comment {
			access 'read write inactive'
			type IEC958
			count 1
		}
	}
}
state.Loopback {
	control.1 {
		iface PCM
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.2 {
		iface PCM
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.3 {
		iface PCM
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.4 {
		iface PCM
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.5 {
		iface PCM
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.6 {
		iface PCM
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.7 {
		iface PCM
		subdevice 1
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.8 {
		iface PCM
		subdevice 1
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.9 {
		iface PCM
		subdevice 1
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.10 {
		iface PCM
		subdevice 1
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.11 {
		iface PCM
		subdevice 1
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.12 {
		iface PCM
		subdevice 1
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.13 {
		iface PCM
		subdevice 2
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.14 {
		iface PCM
		subdevice 2
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.15 {
		iface PCM
		subdevice 2
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.16 {
		iface PCM
		subdevice 2
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.17 {
		iface PCM
		subdevice 2
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.18 {
		iface PCM
		subdevice 2
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.19 {
		iface PCM
		subdevice 3
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.20 {
		iface PCM
		subdevice 3
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.21 {
		iface PCM
		subdevice 3
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.22 {
		iface PCM
		subdevice 3
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.23 {
		iface PCM
		subdevice 3
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.24 {
		iface PCM
		subdevice 3
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.25 {
		iface PCM
		device 1
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.26 {
		iface PCM
		device 1
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.27 {
		iface PCM
		device 1
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.28 {
		iface PCM
		device 1
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.29 {
		iface PCM
		device 1
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.30 {
		iface PCM
		device 1
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.31 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.32 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.33 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.34 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.35 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.36 {
		iface PCM
		device 1
		subdevice 1
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.37 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.38 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.39 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.40 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.41 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.42 {
		iface PCM
		device 1
		subdevice 2
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
	control.43 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Rate Shift 100000'
		value 100000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '80000 - 120000 (step 1)'
		}
	}
	control.44 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Notify'
		value false
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
	control.45 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Slave Active'
		value false
		comment {
			access read
			type BOOLEAN
			count 1
		}
	}
	control.46 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Slave Format'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 52 (step 1)'
		}
	}
	control.47 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Slave Rate'
		value 48000
		comment {
			access read
			type INTEGER
			count 1
			range '0 - 192000 (step 1)'
		}
	}
	control.48 {
		iface PCM
		device 1
		subdevice 3
		name 'PCM Slave Channels'
		value 2
		comment {
			access read
			type INTEGER
			count 1
			range '1 - 1024 (step 1)'
		}
	}
}
--endcollapse--


!!All Loaded Modules
!!------------------

Module
rpcsec_gss_krb5
bnep
hci_uart
btbcm
serdev
bluetooth
ecdh_generic
evdev
joydev
brcmfmac
brcmutil
cfg80211
rfkill
snd_bcm2835
uio_pdrv_genirq
fixed
uio
snd_aloop
snd_pcm
snd_timer
snd
ip_tables
x_tables
ipv6


!!ALSA/HDA dmesg
!!--------------

[    3.412545] systemd-journald[110]: Received request to flush runtime journal from PID 1
[    3.893762] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    3.897524] bcm2835_alsa bcm2835_alsa: card created with 8 channels