!!################################ !!ALSA Information Script v 0.5.0 !!################################ !!Script ran on: Mon Apr 12 09:36:32 UTC 2021 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: System SKU: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 5.4.79-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k5.4.79-v7 Library version: 1.1.8 Utilities version: 1.1.8 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) snd_soc_simple_card (card 1) !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [Headphones ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones bcm2835 Headphones 1 [MAX98357A ]: MAX98357A - MAX98357A MAX98357A !!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_compat_alsa=0 snd_bcm2835: enable_hdmi=1 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_soc_simple_card * : !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/platform/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/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 !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Apr 12 10:55 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Apr 12 10:55 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 16 Apr 12 10:55 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 48 Apr 12 10:55 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 Apr 12 10:55 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Apr 12 10:55 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Apr 12 10:55 . drwxr-xr-x 3 root root 180 Apr 12 10:55 .. lrwxrwxrwx 1 root root 12 Apr 12 10:55 platform-bcm2835_audio -> ../controlC0 lrwxrwxrwx 1 root root 12 Apr 12 10:55 platform-soc:sound -> ../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: MAX98357A [MAX98357A], device 0: bcm2835-i2s-HiFi HiFi-0 [bcm2835-i2s-HiFi HiFi-0] Subdevices: 0/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** !!Amixer output !!------------- !!-------Mixer controls for card Headphones Card hw:0 'Headphones'/'bcm2835 Headphones' Mixer name : 'Broadcom Mixer' Components : '' Controls : 5 Simple ctrls : 3 Simple mixer control 'Headphone',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -562 [91%] [-5.62dB] [on] Simple mixer control 'Attenuation',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -50 - 0 Mono: Playback -13 [74%] [-13.00dB] [on] Simple mixer control 'Reference',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 50 - 90 Mono: Playback 77 [68%] [77.00dB] !!-------Mixer controls for card MAX98357A Card hw:1 'MAX98357A'/'MAX98357A' Mixer name : '' Components : '' Controls : 4 Simple ctrls : 3 Simple mixer control 'Attenuation',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -50 - 0 Mono: Playback -1 [98%] [-1.00dB] [on] Simple mixer control 'Reference',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 50 - 90 Mono: Playback 78 [70%] [78.00dB] Simple mixer control 'Softmaster',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 255 Front Left: 159 [62%] Front Right: 93 [36%] !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'Headphone Playback Volume' value -562 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -562 } } control.2 { iface MIXER name 'Headphone Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface MIXER name 'Attenuation Playback Volume' value -13 comment { access 'read write user' type INTEGER count 1 range '-50 - 0 (step 1)' tlv '0000000400000008ffffec7800000000' dbmin -5000 dbmax 0 dbvalue.0 -1300 } } control.4 { iface MIXER name 'Reference Playback Volume' value 77 comment { access 'read write user' type INTEGER count 1 range '50 - 90 (step 1)' tlv '00000004000000080000138800002328' dbmin 5000 dbmax 9000 dbvalue.0 7700 } } control.5 { iface MIXER name 'Attenuation Playback Switch' value true comment { access 'read write user' type BOOLEAN count 1 } } } state.MAX98357A { control.1 { iface MIXER name Softmaster value.0 159 value.1 93 comment { access 'read write user' type INTEGER count 2 range '0 - 255' tlv '0000000100000008ffffec1400000014' dbmin -5100 dbmax 0 dbvalue.0 -1920 dbvalue.1 -3240 } } control.2 { iface MIXER name 'Attenuation Playback Volume' value -1 comment { access 'read write user' type INTEGER count 1 range '-50 - 0 (step 1)' tlv '0000000400000008ffffec7800000000' dbmin -5000 dbmax 0 dbvalue.0 -100 } } control.3 { iface MIXER name 'Reference Playback Volume' value 78 comment { access 'read write user' type INTEGER count 1 range '50 - 90 (step 1)' tlv '00000004000000080000138800002328' dbmin 5000 dbmax 9000 dbvalue.0 7800 } } control.4 { iface MIXER name 'Attenuation Playback Switch' value true comment { access 'read write user' type BOOLEAN count 1 } } } --endcollapse-- !!All Loaded Modules !!------------------ 8021q bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 bluetooth bnep brcmfmac brcmutil btbcm cfg80211 charlcd cmac ecc ecdh_generic fixed garp gpio_keys hci_uart hd44780 i2c_dev ip_tables ipv6 libsha256 llc mc raspberrypi_hwmon rfcomm rfkill rotary_encoder sha256_generic snd snd_bcm2835 snd_compress snd_pcm snd_pcm_dmaengine snd_soc_bcm2835_i2s snd_soc_core snd_soc_max98357a snd_soc_simple_card snd_soc_simple_card_utils snd_timer stp uio uio_pdrv_genirq v4l2_mem2mem 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: 240555 [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=0ac98b8d-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) -- [ 7.247062] [vc_sm_connected_init]: installed successfully [ 7.274019] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 7.349800] videodev: Linux video capture interface: v2.00 [ 7.378086] bcm2835_audio bcm2835_audio: card created with 8 channels [ 7.417830] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned. -- [ 7.527637] bcm2835-codec bcm2835-codec: Loaded V4L2 isp [ 7.813827] asoc-simple-card soc:sound: HiFi <-> 3f203000.i2s mapping ok [ 8.069587] cfg80211: Loading compiled-in X.509 certificates for regulatory database !!Packages installed !!-------------------- ii alsa-utils 1.1.8-2 armhf Utilities for configuring and using ALSA