!!################################ !!ALSA Information Script v 0.5.1 !!################################ !!Script ran on: Sat Sep 13 16:09:25 UTC 2025 !!Linux Distribution !!------------------ Debian GNU/Linux 12 \n \l PRETTY_NAME="Debian GNU/Linux 12 (bookworm)" NAME="Debian GNU/Linux" 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 !!--------------- !!Kernel Information !!------------------ Kernel release: 6.12.25 rpt-rpi-v8 Operating System: GNU/Linux Architecture: aarch64 Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k6.12.25 rpt-rpi-v8 Library version: 1.2.8 Utilities version: 1.2.8 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) snd_soc_simple_card (card 1) vc4 (card 2) !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [b1 ]: bcm2835_hdmi - bcm2835 HDMI 1 bcm2835 HDMI 1 1 [Slave ]: simple-card - Generic I2S Output - Slave Generic I2S Output - Slave 2 [vc4hdmi ]: vc4-hdmi - vc4-hdmi vc4-hdmi !!PCI Soundcards installed in the system !!-------------------------------------- !!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_hdmi=0 snd_bcm2835: enable_hdmi=1 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_hdmi : Y enable_headphones : N force_bulk : N num_channels : 8 !!Module: snd_soc_simple_card * : !!Module: vc4 fkms_max_refresh_rate : 85 force_hotplug : 0 tv_norm : !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/vchiq-bus/drivers/bcm2835-audio Tree: /sys/class/sound/card0 |-- controlC0 | |-- dev | |-- device -> ../../card0 | |-- power | |-- subsystem -> ../../../../../../../../class/sound | `-- uevent |-- device -> ../../../bcm2835-audio |-- id |-- number |-- pcmC0D0p | |-- dev | |-- device -> ../../card0 | |-- pcm_class | |-- power | |-- subsystem -> ../../../../../../../../class/sound | `-- uevent |-- pcmC0D1p | |-- dev | |-- device -> ../../card0 | |-- pcm_class | |-- power | |-- subsystem -> ../../../../../../../../class/sound | `-- uevent |-- power | |-- autosuspend_delay_ms | |-- control | |-- runtime_active_time | |-- runtime_status | `-- runtime_suspended_time |-- subsystem -> ../../../../../../../class/sound `-- uevent !!Card: /sys/class/sound/card1 Driver: /sys/bus/platform/drivers/asoc-simple-card Tree: /sys/class/sound/card1 |-- controlC1 | |-- dev | |-- device -> ../../card1 | |-- power | |-- subsystem -> ../../../../../../../class/sound | `-- uevent |-- device -> ../../../soc:sound |-- id |-- number |-- pcmC1D0p | |-- dev | |-- device -> ../../card1 | |-- pcm_class | |-- power | |-- subsystem -> ../../../../../../../class/sound | `-- uevent |-- power | |-- autosuspend_delay_ms | |-- control | |-- runtime_active_time | |-- runtime_status | `-- runtime_suspended_time |-- subsystem -> ../../../../../../class/sound `-- uevent !!Card: /sys/class/sound/card2 Driver: /sys/bus/platform/drivers/vc4_hdmi Tree: /sys/class/sound/card2 |-- controlC2 | |-- dev | |-- device -> ../../card2 | |-- power | |-- subsystem -> ../../../../../../../class/sound | `-- uevent |-- device -> ../../../3f902000.hdmi |-- id |-- input1 | |-- capabilities | |-- device -> ../../card2 | |-- event1 | |-- id | |-- inhibited | |-- modalias | |-- name | |-- phys | |-- power | |-- properties | |-- subsystem -> ../../../../../../../class/input | |-- uevent | `-- uniq |-- number |-- pcmC2D0p | |-- dev | |-- device -> ../../card2 | |-- pcm_class | |-- power | |-- subsystem -> ../../../../../../../class/sound | `-- uevent |-- power | |-- autosuspend_delay_ms | |-- control | |-- runtime_active_time | |-- runtime_status | `-- runtime_suspended_time |-- subsystem -> ../../../../../../class/sound `-- uevent !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 4 Sep 13 11:59 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 6 Sep 13 11:59 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 8 Sep 13 11:59 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 2 Sep 13 11:59 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 3 Sep 13 11:59 /dev/snd/pcmC0D1p crw-rw---- 1 root audio 116, 5 Sep 13 11:59 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 7 Sep 13 11:59 /dev/snd/pcmC2D0p crw-rw---- 1 root audio 116, 1 Sep 13 11:59 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Sep 13 11:59 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 100 Sep 13 11:59 . drwxr-xr-x 3 root root 240 Sep 13 11:59 .. lrwxrwxrwx 1 root root 12 Sep 13 11:59 platform-3f00b840.mailbox -> ../controlC0 lrwxrwxrwx 1 root root 12 Sep 13 11:59 platform-3f902000.hdmi -> ../controlC2 lrwxrwxrwx 1 root root 12 Sep 13 11:59 platform-soc:sound -> ../controlC1 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) pcm.!default { type hw card 2 device 0 } !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1] 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 card 0: b1 [bcm2835 HDMI 1], device 1: bcm2835 HDMI 1 [bcm2835 HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Slave [Generic I2S Output - Slave], device 0: bcm2835-i2s-dit-hifi dit-hifi-0 [bcm2835-i2s-dit-hifi dit-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: vc4hdmi [vc4-hdmi], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** !!Amixer output !!------------- !!-------Mixer controls for card b1 Card sysdefault:0 'b1'/'bcm2835 HDMI 1' Mixer name : 'Broadcom Mixer' Components : '' Controls : 4 Simple ctrls : 1 Simple mixer control 'PCM',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -930 [87%] [-9.30dB] [on] !!-------Mixer controls for card Slave Card sysdefault:1 'Slave'/'Generic I2S Output - Slave' Mixer name : '' Components : '' Controls : 0 Simple ctrls : 0 !!-------Mixer controls for card vc4hdmi Card sysdefault:2 'vc4hdmi'/'vc4-hdmi' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 0 !!Alsactl output !!-------------- --startcollapse-- state.b1 { control.1 { iface MIXER name 'PCM Playback Volume' value -930 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -930 } } control.2 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface PCM name 'IEC958 Playback Default' value '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read write' type IEC958 count 1 } } control.4 { iface PCM name 'IEC958 Playback Con Mask' value '0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access read type IEC958 count 1 } } } state.Slave { control { } } state.vc4hdmi { control.1 { iface CARD name 'HDMI Jack' value false comment { access read type BOOLEAN count 1 } } control.2 { iface PCM name 'Playback Channel Map' value.0 0 value.1 0 value.2 0 value.3 0 value.4 0 value.5 0 value.6 0 value.7 0 comment { access 'read volatile' type INTEGER count 8 range '0 - 36' } } control.3 { iface PCM name 'IEC958 Playback Mask' value ffffffffffffffffffffffffffffffffffffffffffffffff0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 comment { access read type IEC958 count 1 } } control.4 { iface PCM name 'IEC958 Playback Default' value '0400000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read write' type IEC958 count 1 } } control.5 { iface PCM name ELD value '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read volatile' type BYTES count 128 } } } --endcollapse-- !!All Loaded Modules !!------------------ backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 binfmt_misc bluetooth brcmfmac brcmfmac_wcc brcmutil btbcm cec cfg80211 dm_mod drm drm_display_helper drm_dma_helper drm_kms_helper drm_panel_orientation_quirks ecc ecdh_generic fuse hci_uart i2c_bcm2835 i2c_dev ip_tables ipv6 libaes mc raspberrypi_gpiomem raspberrypi_hwmon rfkill snd snd_bcm2835 snd_compress snd_pcm snd_pcm_dmaengine snd_soc_bcm2835_i2s snd_soc_core snd_soc_hdmi_codec snd_soc_simple_card snd_soc_simple_card_utils snd_soc_spdif_tx snd_timer uio uio_pdrv_genirq v4l2_mem2mem vc4 vc_sm_cma videobuf2_common videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev 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_hdmi=0 snd_bcm2835.enable_hdmi=1 smsc95xx.macaddr=B8:27:EB:EB:80:8F vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 console=ttyS0,115200 console=tty1 root=PARTUUID=af5efd38-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=CA [ 0.000000] cgroup: Disabling memory control group subsystem -- [ 6.816123] mc: Linux media interface: v0.10 [ 6.841476] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 6.851933] bcm2835-audio bcm2835-audio: card created with 8 channels [ 6.993805] videodev: Linux video capture interface: v2.00 -- [ 7.773082] input: vc4-hdmi as /devices/platform/soc/3f902000.hdmi/rc/rc0/input0 [ 7.820608] input: vc4-hdmi HDMI Jack as /devices/platform/soc/3f902000.hdmi/sound/card2/input1 [ 7.823578] vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) !!Packages installed !!-------------------- ii alsa-topology-conf 1.2.5.1-2 all ALSA topology configuration files ii alsa-ucm-conf 1.2.8-1 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.8-1 rpt1 arm64 Utilities for configuring and using ALSA hi bluez-alsa-utils 4.2.0-2moode1 arm64 Bluetooth Audio ALSA Backend (utils)