!!################################ !!ALSA Information Script v 0.5.3 !!################################ !!Script ran on: Sun May 31 22:14:04 UTC 2026 !!Linux Distribution !!------------------ Ubuntu 25.10 \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 25.10" PRETTY_NAME="Ubuntu 25.10" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=questing LOGO=ubuntu-logo !!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: #18-Ubuntu SMP PREEMPT_DYNAMIC Wed May 27 07:39:46 UTC 2026 Operating System: GNU/Linux Architecture: aarch64 Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k6.17.0-1018-raspi 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 : (null) !!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 Mar 24 14:38 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 5 Mar 24 14:38 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 2 Mar 24 14:38 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 4 Mar 24 14:38 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 Mar 24 14:38 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Mar 24 14:38 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Mar 24 14:38 . drwxr-xr-x 3 root root 180 Mar 24 14:38 .. lrwxrwxrwx 1 root root 12 Mar 24 14:38 platform-3f00b840.mailbox -> ../controlC0 lrwxrwxrwx 1 root root 12 Mar 24 14:38 platform-3f902000.hdmi -> ../controlC1 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) pcm.file_capture { type file slave { pcm "default" # Use your actual input device here } file "/tmp/dapnet-exit.raw" format "raw" } !!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 -2000 [77%] [-20.00dB] [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 -2000 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -2000 } } 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 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 !!------------------ ac97_bus aes_arm64 async_memcpy async_pq async_raid6_recov async_tx async_xor auth_rpcgss autofs4 backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 binfmt_misc blake2b_generic btrfs cec cfg80211 dax dm_mod dm_multipath drm_client_lib drm_display_helper drm_dma_helper drm_exec drm_kms_helper dwc2 efi_pstore fuse grace i2c_bcm2835 inet_diag ip_tables linear lockd mc md_mod mmc_block msi001 msi2500 netfs nfnetlink nfs nfsv4 phy_generic qrtr raid0 raid1 raid10 raid456 raid6_pq raspberrypi_gpiomem raspberrypi_hwmon rfkill roles rpcsec_gss_krb5 rpmb_core sch_fq_codel snd snd_bcm2835 snd_compress snd_pcm snd_pcm_dmaengine snd_soc_core snd_soc_hdmi_codec snd_timer sunrpc tcp_diag tls uas udc_core uio uio_pdrv_genirq usb_storage v4l2_mem2mem vc4 vc_sm_cma videobuf2_common videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev x_tables xor xor_neon !!ALSA/HDA dmesg !!-------------- [ 0.000000] alternatives: applying boot alternatives [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_headphones=0 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 multipath=off dwc_otg.lpm_enable=0 root=LABEL=writable rootfstype=ext4 panic=10 rootwait fixrtc enable_uart=1 [ 0.000000] Unknown kernel command line parameters "fixrtc multipath=off enable_uart=1", will be passed to user space. -- [ 17.334707] videodev: Linux video capture interface: v2.00 [ 17.415840] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 17.415891] snd_bcm2835: module verification failed: signature and/or required key missing - tainting kernel [ 17.428326] bcm2835-audio bcm2835-audio: card created with 8 channels [ 17.635361] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned. -- [ 18.519392] input: vc4-hdmi as /devices/platform/soc/3f902000.hdmi/rc/rc0/input0 [ 18.588200] input: vc4-hdmi HDMI Jack as /devices/platform/soc/3f902000.hdmi/sound/card1/input1 [ 18.605028] vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) -- [180340.489444] msi2500 1-1.4:1.0: SDR API is still slightly experimental and functionality changes may follow [181528.811697] audit: type=1400 audit(1780265627.860:206): apparmor="DENIED" operation="open" class="file" profile="alsamixer" name="/home/lukas/.asoundrc" pid=20967 comm="alsamixer" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [181530.911038] audit: type=1400 audit(1780265629.959:207): apparmor="DENIED" operation="open" class="file" profile="alsamixer" name="/root/.asoundrc" pid=20971 comm="alsamixer" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 [181536.052036] audit: type=1400 audit(1780265635.100:208): apparmor="DENIED" operation="open" class="file" profile="alsamixer" name="/root/.asoundrc" pid=20998 comm="alsamixer" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 !!Packages installed !!-------------------- ii alsa-topology-conf 1.2.5.1-3 all ALSA topology configuration files ii alsa-ucm-conf 1.2.12-1ubuntu2.3 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.14-1ubuntu1 arm64 Utilities for configuring and using ALSA