!!################################ !!ALSA Information Script v 0.5.4 !!################################ !!Script ran on: Wed Jul 1 15:17:19 UTC 2026 !!Linux Distribution !!------------------ Fedora release 44 (Forty Four) NAME="Fedora Linux" ID=fedora PRETTY_NAME="Fedora Linux 44 (KDE Plasma Desktop Edition)" LOGO=fedora-logo-icon CPE_NAME="cpe:/o:fedoraproject:fedora:44" DEFAULT_HOSTNAME="fedora" HOME_URL="https://fedoraproject.org/" DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f44/" SUPPORT_URL="https://ask.fedoraproject.org/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Fedora" REDHAT_BUGZILLA_PRODUCT_VERSION=44 REDHAT_SUPPORT_PRODUCT="Fedora" REDHAT_SUPPORT_PRODUCT_VERSION=44 Fedora release 44 (Forty Four) Fedora release 44 (Forty Four) !!DMI Information !!--------------- Manufacturer: raspberrypi Product Name: Raspberry Pi 4 Model B Rev 1.5 Product Version: Firmware Version: 2026.04 System SKU: Board Vendor: raspberrypi Board Name: Raspberry Pi 4 Model B Rev 1.5 !!ACPI Device Status Information !!--------------- !!ACPI SoundWire Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: #1 SMP PREEMPT_DYNAMIC Fri Jun 19 22:48:11 UTC 2026 Operating System: GNU/Linux Architecture: aarch64 Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k7.0.13-200.fc44.aarch64 Library version: Utilities version: 1.2.16 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) vc4 (card 1) vc4 (card 2) !!Sound Servers on this system !!---------------------------- PipeWire: Installed - Yes (/usr/bin/pipewire) Running - Yes No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [Headphones ]: bcm2835_headpho - bcm2835 Headphones bcm2835 Headphones 1 [vc4hdmi0 ]: vc4-hdmi - vc4-hdmi-0 raspberrypi-RaspberryPi4ModelBRev1.5 2 [vc4hdmi1 ]: vc4-hdmi - vc4-hdmi-1 raspberrypi-RaspberryPi4ModelBRev1.5 !!PCI Soundcards installed in the system !!-------------------------------------- !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_hdmi : N enable_headphones : Y force_bulk : N num_channels : 8 !!Module: vc4 * : !!Module: vc4 * : !!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 |-- 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/vc4_hdmi Tree: /sys/class/sound/card1 |-- controlC1 | |-- dev | |-- device -> ../../card1 | |-- power | |-- subsystem -> ../../../../../../../class/sound | `-- uevent |-- device -> ../../../fef00700.hdmi |-- id |-- input5 | |-- capabilities | |-- device -> ../../card1 | |-- event5 | |-- id | |-- inhibited | |-- modalias | |-- name | |-- phys | |-- power | |-- properties | |-- subsystem -> ../../../../../../../class/input | |-- uevent | `-- uniq |-- 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 -> ../../../fef05700.hdmi |-- id |-- input7 | |-- capabilities | |-- device -> ../../card2 | |-- event7 | |-- 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, 3 Jun 26 20:00 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 5 Jun 26 20:00 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 7 Jun 26 20:00 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 2 Jun 26 20:00 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 4 Jun 26 20:00 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 6 Jun 26 20:00 /dev/snd/pcmC2D0p crw-rw---- 1 root audio 116, 1 Jun 26 20:00 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Jun 26 20:00 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x. 2 root root 100 Jun 26 20:00 . drwxr-xr-x. 3 root root 220 Jun 26 20:00 .. lrwxrwxrwx. 1 root root 12 Jun 26 20:00 platform-fe00b840.mailbox -> ../controlC0 lrwxrwxrwx. 1 root root 12 Jun 26 20:00 platform-fef00700.hdmi -> ../controlC1 lrwxrwxrwx. 1 root root 12 Jun 26 20:00 platform-fef05700.hdmi -> ../controlC2 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) pcm.!default { type hw card 2 } ctl.!default { type hw card 2 } !!System wide config file (/etc/asound.conf) # # Place your global alsa-lib configuration here... # !!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: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: vc4hdmi1 [vc4-hdmi-1], 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 400 [100%] [4.00dB] [on] !!-------Mixer controls for card vc4hdmi0 Card sysdefault:1 'vc4hdmi0'/'raspberrypi-RaspberryPi4ModelBRev1.5' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 0 !!-------Mixer controls for card vc4hdmi1 Card sysdefault:2 'vc4hdmi1'/'raspberrypi-RaspberryPi4ModelBRev1.5' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 0 !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'PCM Playback Volume' value 400 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 400 } } control.2 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.vc4hdmi0 { 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 } } } state.vc4hdmi1 { 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 '100008006a10000100000000000000004a0c0001525049204d4f4e313536097f070000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read volatile' type BYTES count 128 } } } --endcollapse-- !!All Loaded Modules !!------------------ ac97_bus aes_neon_bs bcm2711_thermal bcm2835_dma bcm2835_wdt bcm_phy_lib bcm_phy_ptp binfmt_misc bluetooth bnep brcmfmac brcmfmac_wcc brcmutil broadcom btbcm btintel btqca btrtl btsdio cec cfg80211 clk_bcm2711_dvp cpufreq_dt drm_display_helper drm_dma_helper drm_exec dwc2 fat fuse genet gpio_raspberrypi_exp gpu_sched hci_uart i2c_bcm2835 i2c_brcmstb i2c_dev i2c_mux i2c_mux_pinctrl iproc_rng200 joydev leds_gpio ledtrig_default_on lz4_compress lz4hc_compress mdio_bcm_unimac mmc_block mmc_core nf_conntrack nf_conntrack_broadcast nf_conntrack_netbios_ns nf_defrag_ipv4 nf_defrag_ipv6 nf_nat nf_reject_ipv4 nf_reject_ipv6 nf_tables nfnetlink nft_chain_nat nft_ct nft_fib nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_reject nft_reject_inet nvmem_rmem overlay phy_generic pwm_bcm2835 pwrseq_simple qrtr raspberrypi_cpufreq raspberrypi_hwmon reset_gpio rfcomm rfkill rpmb_core sdhci sdhci_iproc sdhci_pltfm snd snd_bcm2835 snd_compress snd_hrtimer snd_pcm snd_pcm_dmaengine snd_seq snd_seq_device snd_seq_dummy snd_soc_core snd_soc_hdmi_codec snd_timer soundcore sunrpc udc_core uinput v3d vc4 vchiq vfat zram !!ALSA/HDA dmesg !!-------------- !!Packages installed !!-------------------- alsa-lib-1.2.16.1-1.fc44.aarch64 alsa-ucm-1.2.16.1-1.fc44.noarch alsa-utils-1.2.16-1.fc44.aarch64