!!################################
!!ALSA Information Script v 0.5.3
!!################################

!!Script ran on: Sun Apr 19 10:07:31 UTC 2026


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

Debian GNU/Linux 13 \n \l PRETTY_NAME="Debian GNU/Linux 13 (trixie)" NAME="Debian GNU/Linux" DEBIAN_VERSION_FULL=13.4 ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/"


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

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


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



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



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

Kernel release:    #1 SMP PREEMPT Debian 1:6.12.75-1 rpt1 (2026-03-11)
Operating System:  GNU/Linux
Architecture:      aarch64
Processor:         unknown
SMP Enabled:       Yes


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

Driver version:     k6.12.75 rpt-rpi-v8
Library version:    
Utilities version:  1.2.14


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

snd_bcm2835 (card 0)


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

No sound servers found.


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

 0 [Headphones     ]: bcm2835_headpho - bcm2835 Headphones
                      bcm2835 Headphones


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

snd_pcsp: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_bcm2835: enable_headphones=0
snd_bcm2835: enable_headphones=1
snd_bcm2835: enable_hdmi=1
snd_bcm2835: enable_hdmi=0


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

!!Module: snd_bcm2835
	enable_hdmi : N
	enable_headphones : Y
	force_bulk : N
	num_channels : 8


!!Sysfs card info
!!---------------

!!Card: /sys/class/sound/card0
Driver: /sys/bus/vchiq-bus/drivers/bcm2835-audio
Tree:


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

crw-rw---- 1 root audio 116,  3 Apr 17 23:10 /dev/snd/controlC0
crw-rw---- 1 root audio 116,  2 Apr 17 23:10 /dev/snd/pcmC0D0p
crw-rw---- 1 root audio 116,  1 Apr 17 23:10 /dev/snd/seq
crw-rw---- 1 root audio 116, 33 Apr 17 23:10 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root  60 Apr 17 23:10 .
drwxr-xr-x 3 root root 140 Apr 17 23:10 ..
lrwxrwxrwx 1 root root  12 Apr 17 23:10 platform-3f00b840.mailbox -> ../controlC0


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

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

pcm.!default {
	type hw
	card 0
	device 0
}

ctl.!default {
	type hw
	card 0
}


!!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 Headphones

Card sysdefault:0 'Headphones'/'bcm2835 Headphones'
  Mixer name	: 'Broadcom Mixer'
  Components	: ''
  Controls      : 2
  Simple ctrls  : 1
Simple mixer control 'PCM',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback -10239 - 400
  Mono: Playback 0 [96%] [0.00dB] [on]


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

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


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

bluetooth
brcmfmac
brcmfmac_wcc
brcmutil
btbcm
cfg80211
ecc
ecdh_generic
fuse
hci_uart
inet_diag
ip_tables
ipv6
libaes
nfnetlink
raspberrypi_gpiomem
raspberrypi_hwmon
rfkill
snd
snd_bcm2835
snd_pcm
snd_timer
tcp_diag
uio
uio_pdrv_genirq
x_tables


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

[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_headphones=0 cgroup_disable=memory snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=720 bcm2708_fb.fbheight=480 bcm2708_fb.fbdepth=16 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3f000000 vc_mem.mem_size=0x3f600000  root=PARTUUID=3db938b9-02 rootfstype=ext4 rootwait fsck.repair=yes net.ifnames=0 logo.nologo console=tty1 snd_bcm2835.enable_hdmi=0
[    0.000000] cgroup: Disabling memory control group subsystem
--
[    8.780598] rpi-gpiomem 3f200000.gpiomem: initialised 1 regions as /dev/gpiomem
[    9.136033] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    9.140770] bcm2835-audio bcm2835-audio: card created with 8 channels
[    9.297136] Bluetooth: Core ver 2.22


!!Packages installed
!!--------------------

ii  alsa-utils                     1.2.14-1 rpt1                  arm64        Utilities for configuring and using ALSA