!!################################ !!ALSA Information Script v 0.4.65 !!################################ !!Script ran on: Sun Jan 4 17:17:45 UTC 2026 !!Linux Distribution !!------------------ Debian GNU/Linux 11 \n \l PRETTY_NAME="Debian GNU/Linux 11 (bullseye)" 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: 6.1.21-v8 Operating System: GNU/Linux Architecture: aarch64 Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k6.1.21-v8 Library version: 1.2.4 Utilities version: 1.2.4 !!Loaded ALSA modules !!------------------- snd_bcm2835 vc4 snd_usb_audio snd_usb_audio !!Sound Servers on this system !!---------------------------- Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - Yes !!Soundcards recognised by ALSA !!----------------------------- 0 [Headphones ]: bcm2835_headpho - bcm2835 Headphones bcm2835 Headphones 1 [vc4hdmi ]: vc4-hdmi - vc4-hdmi vc4-hdmi 2 [AK5370 ]: USB-Audio - AK5370 AKM AK5370 at usb-3f980000.usb-1.3, full speed 3 [BT600 ]: USB-Audio - Poly BT600 Plantronics Poly BT600 at usb-3f980000.usb-1.2.1, full speed !!PCI Soundcards installed in the system !!-------------------------------------- !!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_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 !!Module: vc4 fkms_max_refresh_rate : 85 force_hotplug : 0 tv_norm : !!Module: snd_usb_audio autoclock : Y delayed_register : (null),(null),(null),(null),(null),(null),(null),(null) device_setup : 0,0,0,0,0,0,0,0 enable : Y,Y,Y,Y,Y,Y,Y,Y id : (null),(null),(null),(null),(null),(null),(null),(null) ignore_ctl_error : N implicit_fb : N,N,N,N,N,N,N,N index : -2,-1,-1,-1,-1,-1,-1,-1 lowlatency : Y pid : -1,-1,-1,-1,-1,-1,-1,-1 quirk_alias : (null),(null),(null),(null),(null),(null),(null),(null) quirk_flags : 0,0,0,0,0,0,0,0 skip_validation : N use_vmalloc : Y vid : -1,-1,-1,-1,-1,-1,-1,-1 !!Module: snd_usb_audio autoclock : Y delayed_register : (null),(null),(null),(null),(null),(null),(null),(null) device_setup : 0,0,0,0,0,0,0,0 enable : Y,Y,Y,Y,Y,Y,Y,Y id : (null),(null),(null),(null),(null),(null),(null),(null) ignore_ctl_error : N implicit_fb : N,N,N,N,N,N,N,N index : -2,-1,-1,-1,-1,-1,-1,-1 lowlatency : Y pid : -1,-1,-1,-1,-1,-1,-1,-1 quirk_alias : (null),(null),(null),(null),(null),(null),(null),(null) quirk_flags : 0,0,0,0,0,0,0,0 skip_validation : N use_vmalloc : Y vid : -1,-1,-1,-1,-1,-1,-1,-1 !!USB Mixer information !!--------------------- --startcollapse-- USB Mixer: usb_id=0x05560001, ctrlif=0, ctlerr=0 Card: AKM AK5370 at usb-3f980000.usb-1.3, full speed Unit: 3 Control: name="Auto Gain Control", index=0 Info: id=3, control=7, cmask=0x0, channels=1, type="BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 3 Control: name="Mic Capture Volume", index=0 Info: id=3, control=2, cmask=0x0, channels=1, type="S16" Volume: min=-14848, max=5120, dBmin=-5800, dBmax=2000 Unit: 3 Control: name="Mic Capture Switch", index=0 Info: id=3, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 USB Mixer: usb_id=0x047f02ee, ctrlif=0, ctlerr=0 Card: Plantronics Poly BT600 at usb-3f980000.usb-1.2.1, full speed Unit: 2 Control: name="Headset Capture Switch", index=0 Info: id=2, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 5 Control: name="PCM Playback Volume", index=0 Info: id=5, control=2, cmask=0x0, channels=1, type="S16" Volume: min=-10240, max=1280, dBmin=-4000, dBmax=500 Unit: 5 Control: name="PCM Playback Switch", index=0 Info: id=5, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 --endcollapse-- !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Dec 30 10:29 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Dec 30 10:29 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 64 Jan 3 13:55 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 96 Jan 3 18:42 /dev/snd/controlC3 crw-rw---- 1 root audio 116, 16 Dec 30 10:29 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 48 Dec 30 10:29 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 88 Jan 3 13:55 /dev/snd/pcmC2D0c crw-rw---- 1 root audio 116, 120 Jan 3 18:42 /dev/snd/pcmC3D0c crw-rw---- 1 root audio 116, 112 Jan 4 18:14 /dev/snd/pcmC3D0p crw-rw---- 1 root audio 116, 1 Dec 30 10:29 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Dec 30 10:29 /dev/snd/timer /dev/snd/by-id: total 0 drwxr-xr-x 2 root root 80 Jan 3 18:42 . drwxr-xr-x 4 root root 300 Jan 3 18:42 .. lrwxrwxrwx 1 root root 12 Jan 3 13:55 usb-AKM_AK5370-00 -> ../controlC2 lrwxrwxrwx 1 root root 12 Jan 3 18:42 usb-Plantronics_Poly_BT600_ed61593903b047b09e804c350f38d724-00 -> ../controlC3 /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 120 Jan 3 18:42 . drwxr-xr-x 4 root root 300 Jan 3 18:42 .. lrwxrwxrwx 1 root root 12 Dec 30 10:29 platform-3f902000.hdmi -> ../controlC1 lrwxrwxrwx 1 root root 12 Jan 3 18:42 platform-3f980000.usb-usb-0:1.2.1:1.0 -> ../controlC3 lrwxrwxrwx 1 root root 12 Jan 3 13:55 platform-3f980000.usb-usb-0:1.3:1.0 -> ../controlC2 lrwxrwxrwx 1 root root 12 Dec 30 10:29 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: 7/8 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 1: vc4hdmi [vc4-hdmi], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 3: BT600 [Poly BT600], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 2: AK5370 [AK5370], device 0: USB Audio [USB Audio] Subdevices: 0/1 Subdevice #0: subdevice #0 card 3: BT600 [Poly BT600], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card Headphones Card hw: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 -1356 [83%] [-13.56dB] [on] !!-------Mixer controls for card vc4hdmi Card hw:1 'vc4hdmi'/'vc4-hdmi' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 1 Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 155 [61%] [-20.00dB] Front Right: Playback 155 [61%] [-20.00dB] !!-------Mixer controls for card AK5370 Card hw:2 'AK5370'/'AKM AK5370 at usb-3f980000.usb-1.3, full speed' Mixer name : 'USB Mixer' Components : 'USB0556:0001' Controls : 4 Simple ctrls : 2 Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined Capture channels: Mono Limits: Capture 0 - 78 Mono: Capture 54 [69%] [-4.00dB] [on] Simple mixer control 'Auto Gain Control',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] !!-------Mixer controls for card BT600 Card hw:3 'BT600'/'Plantronics Poly BT600 at usb-3f980000.usb-1.2.1, full speed' Mixer name : 'USB Mixer' Components : 'USB047f:02ee' Controls : 5 Simple ctrls : 2 Simple mixer control 'PCM',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 45 Mono: Playback 28 [62%] [-12.00dB] [on] Simple mixer control 'Headset',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [on] !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'PCM Playback Volume' value -1356 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -1356 } } control.2 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.vc4hdmi { control.1 { 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 type INTEGER count 8 range '0 - 36' } } control.2 { iface PCM name 'IEC958 Playback Mask' value ffffffffffffffffffffffffffffffffffffffffffffffff0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 comment { access read type IEC958 count 1 } } control.3 { iface PCM name 'IEC958 Playback Default' value '0400000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read write' type IEC958 count 1 } } control.4 { iface PCM name ELD value '100007006622000000000000000000001e6dbc574d3233383044150750090707000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read volatile' type BYTES count 128 } } control.5 { iface MIXER name 'PCM Playback Volume' value.0 155 value.1 155 comment { access 'read write user' type INTEGER count 2 range '0 - 255' tlv '0000000100000008ffffec1400000014' dbmin -5100 dbmax 0 dbvalue.0 -2000 dbvalue.1 -2000 } } } state.AK5370 { control.1 { iface PCM name 'Capture Channel Map' value 2 comment { access read type INTEGER count 1 range '0 - 36' } } control.2 { iface MIXER name 'Mic Capture Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface MIXER name 'Mic Capture Volume' value 54 comment { access 'read write' type INTEGER count 1 range '0 - 78' dbmin -5800 dbmax 2000 dbvalue.0 -400 } } control.4 { iface MIXER name 'Auto Gain Control' value false comment { access 'read write' type BOOLEAN count 1 } } } state.BT600 { control.1 { iface PCM name 'Capture Channel Map' value 0 comment { access read type INTEGER count 1 range '0 - 36' } } control.2 { iface PCM name 'Playback Channel Map' value.0 0 value.1 0 comment { access read type INTEGER count 2 range '0 - 36' } } control.3 { iface MIXER name 'Headset Capture Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.4 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.5 { iface MIXER name 'PCM Playback Volume' value 28 comment { access 'read write' type INTEGER count 1 range '0 - 45' dbmin -4000 dbmax 500 dbvalue.0 -1200 } } } --endcollapse-- !!All Loaded Modules !!------------------ 8021q aes_arm64 aes_generic af_alg algif_hash algif_skcipher backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 bluetooth bnep brcmfmac brcmutil btbcm cec cfg80211 cmac drm drm_display_helper drm_dma_helper drm_kms_helper drm_panel_orientation_quirks ecc ecdh_generic fb_sys_fops fuse garp hci_uart i2c_bcm2835 i2c_dev ip_tables ipv6 joydev libaes llc mc raspberrypi_hwmon rfcomm rfkill sg snd snd_bcm2835 snd_compress snd_hwdep snd_pcm snd_pcm_dmaengine snd_rawmidi snd_seq_device snd_soc_core snd_soc_hdmi_codec snd_timer snd_usb_audio snd_usbmidi_lib squashfs stp syscopyarea sysfillrect sysimgblt 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] Built 1 zonelists, mobility grouping on. Total pages: 238896 [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_headphones=0 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_hdmi=0 video=HDMI-A-1:640x480M@60,margin_left=28,margin_right=28,margin_top=16,margin_bottom=16 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=5a1df0e1-02 rootfstype=ext4 fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles [ 0.000000] Unknown kernel command line parameters "splash", will be passed to user space. -- [ 12.453633] mc: Linux media interface: v0.10 [ 12.631662] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 12.642299] videodev: Linux video capture interface: v2.00 -- [357911.050129] usb 1-1.3: Manufacturer: AKM [357913.118694] usbcore: registered new interface driver snd-usb-audio [358513.251428] Transfer to device 6 endpoint 0x1 frame 1296 failed - FIQ reported NYET. Data may have been lost. !!Packages installed !!-------------------- ii alsa-topology-conf 1.2.4-1 all ALSA topology configuration files ii alsa-ucm-conf 1.2.4-2 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.4-1 rpt1 arm64 Utilities for configuring and using ALSA