!!################################ !!ALSA Information Script v 0.5.3 !!################################ !!Script ran on: Mon Feb 2 17:28:11 UTC 2026 !!Linux Distribution !!------------------ Debian GNU/Linux 13 \n \l PRETTY_NAME="Debian GNU/Linux 13 (trixie)" NAME="Debian GNU/Linux" DEBIAN_VERSION_FULL=13.2 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 1:6.12.47-1 rpt1 (2025-09-16) Operating System: GNU/Linux Architecture: aarch64 Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k6.12.47 rpt-rpi-v8 Library version: Utilities version: 1.2.14 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) vc4 (card 1) !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [Headphones ]: bcm2835_headpho - bcm2835 Headphones bcm2835 Headphones 1 [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_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 : !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/vchiq-bus/drivers/bcm2835-audio Tree: !!Card: /sys/class/sound/card1 Driver: /sys/bus/platform/drivers/vc4_hdmi Tree: !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 3 Feb 2 17:24 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 5 Feb 2 17:24 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 2 Feb 2 17:24 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 4 Feb 2 17:24 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 Feb 2 17:18 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Feb 2 17:24 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Feb 2 17:18 . drwxr-xr-x 3 root root 180 Feb 2 17:18 .. lrwxrwxrwx 1 root root 12 Feb 2 17:18 platform-3f00b840.mailbox -> ../controlC0 lrwxrwxrwx 1 root root 12 Feb 2 17:18 platform-3f902000.hdmi -> ../controlC1 !!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 card 1: 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 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] !!-------Mixer controls for card vc4hdmi Card sysdefault:1 'vc4hdmi'/'vc4-hdmi' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 0 !!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 } } } state.vc4hdmi { control.1 { iface CARD name 'HDMI Jack' value true 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 '100008006c10000100000000000000001e6df9764c4720554c54524157494445090707000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read volatile' type BYTES count 128 } } } --endcollapse-- !!All Loaded Modules !!------------------ aes_arm64 aes_generic af_alg algif_hash algif_skcipher backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 binfmt_misc bluetooth bnep brcmfmac brcmfmac_wcc brcmutil btbcm cec cfg80211 cmac drm drm_display_helper drm_dma_helper drm_kms_helper drm_panel_orientation_quirks ecc ecdh_generic ff_memless fuse hci_uart i2c_bcm2835 ip_tables ipv6 joydev libaes lz4_compress mc nfnetlink raspberrypi_gpiomem raspberrypi_hwmon rfcomm rfkill sch_fq_codel snd snd_bcm2835 snd_compress snd_pcm snd_pcm_dmaengine snd_soc_core snd_soc_hdmi_codec snd_timer squashfs uio uio_pdrv_genirq v4l2_mem2mem vc4 vc_sm_cma videobuf2_common videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev x_tables xpad zram !!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 snd_bcm2835.enable_hdmi=0 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=9b4ed562-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=ES [ 0.000000] cgroup: Disabling memory control group subsystem -- [ 9.930833] Adding 927740k swap on /dev/zram0. Priority:100 extents:1 across:927740k SS [ 10.332547] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 10.361357] mc: Linux media interface: v0.10 [ 10.365647] bcm2835-audio bcm2835-audio: card created with 8 channels [ 10.368036] vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_hvs_ops [vc4]) -- [ 10.694198] bcm2835-codec bcm2835-codec: Loaded V4L2 encode [ 10.703077] input: vc4-hdmi HDMI Jack as /devices/platform/soc/3f902000.hdmi/sound/card1/input8 [ 10.703628] bcm2835-codec bcm2835-codec: Device registered as /dev/video12 -- [ 422.520590] audit: type=1326 audit(1770053138.120:2): auid=1000 uid=1000 gid=1000 ses=1 pid=8849 comm="dosbox" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=29 compat=0 ip=0x7f815d1b50 code=0x50000 [ 422.594158] audit: type=1326 audit(1770053138.192:3): auid=1000 uid=1000 gid=1000 ses=1 pid=8849 comm="SDLHotplugALSA" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=140 compat=0 ip=0x7f815d194c code=0x50000 [ 458.886606] audit: type=1326 audit(1770053174.483:4): auid=1000 uid=1000 gid=1000 ses=1 pid=8992 comm="dosbox" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=29 compat=0 ip=0x7f84821b50 code=0x50000 [ 458.956866] audit: type=1326 audit(1770053174.555:5): auid=1000 uid=1000 gid=1000 ses=1 pid=8992 comm="SDLHotplugALSA" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=140 compat=0 ip=0x7f8482194c code=0x50000 [ 535.821091] audit: type=1326 audit(1770053251.418:6): auid=1000 uid=1000 gid=1000 ses=1 pid=9119 comm="dosbox" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=29 compat=0 ip=0x7fb8981b50 code=0x50000 [ 535.885504] audit: type=1326 audit(1770053251.482:7): auid=1000 uid=1000 gid=1000 ses=1 pid=9119 comm="SDLHotplugALSA" exe="/snap/dosbox-staging/122/usr/local/bin/dosbox" sig=0 arch=c00000b7 syscall=140 compat=0 ip=0x7fb898194c code=0x50000 !!Packages installed !!-------------------- ii alsa-tools 1.2.14-1 arm64 Console based ALSA utilities for specific hardware ii alsa-topology-conf 1.2.5.1-3 all ALSA topology configuration files ii alsa-ucm-conf 1.2.14-1 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.14-1 rpt1 arm64 Utilities for configuring and using ALSA