!!################################ !!ALSA Information Script v 0.4.65 !!################################ !!Script ran on: Sun Aug 21 15:09:06 UTC 2022 !!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: 5.10.103-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k5.10.103-v7 Library version: 1.2.4 Utilities version: 1.2.4 !!Loaded ALSA modules !!------------------- snd_bcm2835 snd_soc_simple_card !!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 [sndrpisimplecar]: snd_rpi_simple_ - snd_rpi_simple_card snd_rpi_simple_card !!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 * : !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Aug 21 13:45 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Aug 21 14:26 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 16 Aug 21 13:45 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 56 Aug 21 14:26 /dev/snd/pcmC1D0c crw-rw---- 1 root audio 116, 48 Aug 21 14:26 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 Aug 21 13:45 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Aug 21 13:45 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Aug 21 14:26 . drwxr-xr-x 3 root root 200 Aug 21 14:26 .. lrwxrwxrwx 1 root root 12 Aug 21 14:26 platform-asoc-simple-card.0 -> ../controlC1 lrwxrwxrwx 1 root root 12 Aug 21 13:45 platform-bcm2835_audio -> ../controlC0 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) #This section makes a reference to your I2S hardware, adjust the card name # to what is shown in arecord -l after card x: before the name in [] #You may have to adjust channel count also but stick with default first pcm.dmic_hw { type hw card sndrpisimplecar channels 2 format S32_LE } #This is the software volume control, it links to the hardware above and after # saving the .asoundrc file you can type alsamixer, press F6 to select # your I2S mic then F4 to set the recording volume and arrow up and down # to adjust the volume # After adjusting the volume - go for 50 percent at first, you can do # something like # arecord -D dmic_sv -c2 -r 48000 -f S32_LE -t wav -V mono -v myfile.wav pcm.dmic_sv { type softvol slave.pcm dmic_hw control { name "Boost Capture Volume" card sndrpisimplecar } min_dB -3.0 max_dB 30.0 } !!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: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 1: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0] 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 'Headphone',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -127 [95%] [-1.27dB] [on] !!-------Mixer controls for card sndrpisimplecar Card hw:1 'sndrpisimplecar'/'snd_rpi_simple_card' Mixer name : '' Components : '' Controls : 1 Simple ctrls : 1 Simple mixer control 'Boost',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 255 Front Left: Capture 255 [100%] [27.60dB] Front Right: Capture 255 [100%] [27.60dB] !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'Headphone Playback Volume' value -127 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -127 } } control.2 { iface MIXER name 'Headphone Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.sndrpisimplecar { control.1 { iface MIXER name 'Boost Capture Volume' value.0 255 value.1 255 comment { access 'read write user' type INTEGER count 2 range '0 - 255' tlv '0000000100000008fffffed40000000c' dbmin -300 dbmax 2760 dbvalue.0 2760 dbvalue.1 2760 } } } --endcollapse-- !!All Loaded Modules !!------------------ 8021q aes_arm_bs af_alg algif_hash algif_skcipher backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 bluetooth bnep brcmfmac brcmutil btbcm cfg80211 cmac configs cryptd crypto_simd drm drm_panel_orientation_quirks ecc ecdh_generic fixed fuse garp hci_uart i2c_dev ip_tables iptable_filter iptable_mangle iptable_nat ipv6 llc mc nf_conntrack nf_defrag_ipv4 nf_defrag_ipv6 nf_nat raspberrypi_hwmon rfcomm rfkill sha256_generic snd snd_bcm2835 snd_compress snd_i2s_mic snd_pcm snd_pcm_dmaengine snd_soc_bcm2835_i2s snd_soc_core 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=d9b3f436-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles [ 0.000000] Kernel parameter elevator= does not have any effect anymore. -- [ 6.022997] i2c /dev entries driver [ 6.149304] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 6.160485] bcm2835_audio bcm2835_audio: card created with 8 channels -- [ 204.080024] ICMPv6: process `dhcpcd' is using deprecated sysctl (syscall) net.ipv6.neigh.wlan0.retrans_time - use net.ipv6.neigh.wlan0.retrans_time_ms instead [ 1991.944645] snd_i2s_mic: loading out-of-tree module taints kernel. [ 1991.997612] request module load 'bcm2708-dmaengine': 0 !!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 armhf Utilities for configuring and using ALSA