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

!!Script ran on: Tue May  4 08:19:23 UTC 2021


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

ID_LIKE=debian


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

Manufacturer:      
Product Name:      
Product Version:   
Firmware Version:  
Board Vendor:      
Board Name:        


!!ACPI Device Status Information
!!---------------



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

Kernel release:    5.10.17-v8 
Operating System:  GNU/Linux
Architecture:      aarch64
Processor:         unknown
SMP Enabled:       Yes


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

Driver version:     k5.10.17-v8 
Library version:    1.1.8
Utilities version:  1.1.8


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

snd_bcm2835


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

No sound servers found.


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

 0 [Headphones     ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones
                      bcm2835 Headphones


!!PCI Soundcards installed in the system
!!--------------------------------------



!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------



!!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_bcm2835: enable_compat_alsa=0
snd_bcm2835: enable_hdmi=1


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

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


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

crw-rw---- 1 root audio 116,  0 Apr  5 17:37 /dev/snd/controlC0
crw-rw---- 1 root audio 116, 16 Apr  5 17:37 /dev/snd/pcmC0D0p
crw-rw---- 1 root audio 116,  1 Apr  5 17:37 /dev/snd/seq
crw-rw---- 1 root audio 116, 33 Apr  5 17:37 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  60 Apr  5 17:37 .
drwxr-xr-x 3 root root 140 Apr  5 17:37 ..
lrwxrwxrwx 1 root root  12 Apr  5 17:37 platform-bcm2835_audio -> ../controlC0


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

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
  Subdevices: 8/8
  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
  Subdevice #7: subdevice #7

ARECORD

**** List of CAPTURE Hardware Devices ****

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

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

Card hw:0 'Headphones'/'bcm2835 Headphones'
  Mixer name	: 'Broadcom Mixer'
  Components	: ''
  Controls      : 2
  Simple ctrls  : 1
Simple mixer control 'Headphone',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback -10239 - 400
  Mono: Playback -2000 [77%] [-20.00dB] [on]


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

--startcollapse--
state.Headphones {
	control.1 {
		iface MIXER
		name 'Headphone Playback Volume'
		value -2000
		comment {
			access 'read write'
			type INTEGER
			count 1
			range '-10239 - 400'
			dbmin -9999999
			dbmax 400
			dbvalue.0 -2000
		}
	}
	control.2 {
		iface MIXER
		name 'Headphone Playback Switch'
		value true
		comment {
			access 'read write'
			type BOOLEAN
			count 1
		}
	}
}
--endcollapse--


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

Module
xt_nat
xt_tcpudp
veth
xt_conntrack
xt_MASQUERADE
nf_conntrack_netlink
nft_counter
xt_addrtype
nft_compat
nft_chain_nat
nf_nat
nf_conntrack
nf_defrag_ipv6
nf_defrag_ipv4
nf_tables
nfnetlink
br_netfilter
bridge
overlay
aes_neon_blk
crypto_simd
cryptd
bnep
hci_uart
btbcm
bluetooth
ecdh_generic
ecc
8021q
garp
stp
llc
spidev
brcmfmac
brcmutil
sha256_generic
raspberrypi_hwmon
cfg80211
rfkill
i2c_bcm2835
bcm2835_codec
bcm2835_v4l2
bcm2835_isp
v4l2_mem2mem
snd_bcm2835
bcm2835_mmal_vchiq
videobuf2_vmalloc
videobuf2_dma_contig
videobuf2_memops
snd_pcm
videobuf2_v4l2
videobuf2_common
spi_bcm2835
snd_timer
snd
videodev
vc_sm_cma
mc
uio_pdrv_genirq
uio
i2c_dev
ip_tables
x_tables
ipv6


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

[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 225792
[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=ee13923c-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[    0.000000] Kernel parameter elevator= does not have any effect anymore.
--
[    7.512439] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    7.512884] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    7.521176] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.