!!################################ !!ALSA Information Script v 0.5.0 !!################################ !!Script ran on: Thu May 27 10:50:14 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: 5.4.51-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k5.4.51-v7 Library version: 1.1.8 Utilities version: 1.1.8 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) snd_dummy (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 [Dummy ]: Dummy - Dummy Dummy 1 !!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 snd_bcm2835: enable_headphones=1 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_dummy enable : Y,N,N,N,N,N,N,N fake_buffer : Y hrtimer : Y id : (null),(null),(null),(null),(null),(null),(null),(null) index : -1,-1,-1,-1,-1,-1,-1,-1 model : (null),(null),(null),(null),(null),(null),(null),(null) pcm_devs : 1,1,1,1,1,1,1,1 pcm_substreams : 8,8,8,8,8,8,8,8 !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/platform/drivers/bcm2835_audio Tree: !!Card: /sys/class/sound/card1 Driver: /sys/bus/platform/drivers/snd_dummy Tree: !!ALSA Device nodes !!----------------- crw-rw-rw- 1 root audio 116, 0 Oct 5 2020 /dev/snd/controlC0 crw-rw-rw- 1 root audio 116, 32 Oct 5 2020 /dev/snd/controlC1 crw-rw-rw- 1 root audio 116, 16 Oct 5 2020 /dev/snd/pcmC0D0p crw-rw-rw- 1 root audio 116, 56 Oct 5 2020 /dev/snd/pcmC1D0c crw-rw-rw- 1 root audio 116, 48 May 27 12:44 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 Oct 5 2020 /dev/snd/seq crw-rw-rw- 1 root audio 116, 33 Oct 5 2020 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Oct 5 2020 . drwxr-xr-x 3 root root 200 Oct 5 2020 .. lrwxrwxrwx 1 root root 12 Oct 5 2020 platform-bcm2835_audio -> ../controlC0 lrwxrwxrwx 1 root root 12 Oct 5 2020 platform-snd_dummy.0 -> ../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: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] 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 ARECORD **** List of CAPTURE Hardware Devices **** card 1: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] 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 !!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 -2000 [77%] [-20.00dB] [on] !!-------Mixer controls for card Dummy Card hw:1 'Dummy'/'Dummy 1' Mixer name : 'Dummy Mixer' Components : '' Controls : 11 Simple ctrls : 6 Simple mixer control 'Master',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Synth',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Line',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'CD',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Mic',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'External I/O Box',0 Capabilities: enum Items: 'None' 'CD Player' Item0: 'CD Player' !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'Headphone 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 'Headphone Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.Dummy { control.1 { iface MIXER name 'Master Volume' value.0 0 value.1 0 comment { access 'read write' type INTEGER count 2 range '-50 - 100' dbmin -4500 dbmax 0 dbvalue.0 -3000 dbvalue.1 -3000 } } control.2 { iface MIXER name 'Master Capture Switch' value.0 false value.1 false comment { access 'read write' type BOOLEAN count 2 } } control.3 { iface MIXER name 'Synth Volume' value.0 0 value.1 0 comment { access 'read write' type INTEGER count 2 range '-50 - 100' dbmin -4500 dbmax 0 dbvalue.0 -3000 dbvalue.1 -3000 } } control.4 { iface MIXER name 'Synth Capture Switch' value.0 false value.1 false comment { access 'read write' type BOOLEAN count 2 } } control.5 { iface MIXER name 'Line Volume' value.0 0 value.1 0 comment { access 'read write' type INTEGER count 2 range '-50 - 100' dbmin -4500 dbmax 0 dbvalue.0 -3000 dbvalue.1 -3000 } } control.6 { iface MIXER name 'Line Capture Switch' value.0 false value.1 false comment { access 'read write' type BOOLEAN count 2 } } control.7 { iface MIXER name 'Mic Volume' value.0 0 value.1 0 comment { access 'read write' type INTEGER count 2 range '-50 - 100' dbmin -4500 dbmax 0 dbvalue.0 -3000 dbvalue.1 -3000 } } control.8 { iface MIXER name 'Mic Capture Switch' value.0 false value.1 false comment { access 'read write' type BOOLEAN count 2 } } control.9 { iface MIXER name 'CD Volume' value.0 0 value.1 0 comment { access 'read write' type INTEGER count 2 range '-50 - 100' dbmin -4500 dbmax 0 dbvalue.0 -3000 dbvalue.1 -3000 } } control.10 { iface MIXER name 'CD Capture Switch' value.0 false value.1 false comment { access 'read write' type BOOLEAN count 2 } } control.11 { iface MIXER name 'External I/O Box' value 'CD Player' comment { access 'read write' type ENUMERATED count 1 item.0 None item.1 'CD Player' } } } --endcollapse-- !!All Loaded Modules !!------------------ 8021q bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 bluetooth bnep brcmfmac brcmutil btbcm cfg80211 cmac ecc ecdh_generic fixed garp hci_uart ip_tables ipv6 libsha256 llc lz4 lz4_compress mc nf_defrag_ipv6 raspberrypi_hwmon rfkill rpi_poe_fan sha256_generic snd snd_bcm2835 snd_dummy snd_pcm 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 zram zsmalloc !!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 snd_bcm2835.enable_headphones=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) -- [ 4.991063] systemd[1]: Started Dispatch Password Requests to Console Directory Watch. [ 5.230234] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 5.252370] bcm2835_audio bcm2835_audio: card created with 8 channels [ 5.921606] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null) !!Packages installed !!-------------------- ii alsa-utils 1.1.8-2 armhf Utilities for configuring and using ALSA