!!################################ !!ALSA Information Script v 0.4.64 !!################################ !!Script ran on: Mon Mar 2 13:52:19 UTC 2020 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: !!Kernel Information !!------------------ Kernel release: 4.19.66-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k4.19.66-v7 Library version: 1.1.3 Utilities version: 1.1.3 !!Loaded ALSA modules !!------------------- snd_bcm2835 snd_bcm2835 snd_bcm2835 !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [HDMI ]: bcm2835_hdmi - bcm2835 HDMI bcm2835 HDMI 1 [b1 ]: bcm2835_hdmi - bcm2835 HDMI 1 bcm2835 HDMI 1 2 [Headphones ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones bcm2835 Headphones !!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_headphones=1 snd_bcm2835: enable_hdmi=1 snd_bcm2835: enable_compat_alsa=0 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Mar 2 13:51 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Mar 2 13:51 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 64 Mar 2 13:51 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 16 Mar 2 13:51 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 48 Mar 2 13:51 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 80 Mar 2 13:51 /dev/snd/pcmC2D0p crw-rw---- 1 root audio 116, 1 Mar 2 13:51 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Mar 2 13:51 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 60 Mar 2 13:51 . drwxr-xr-x 3 root root 220 Mar 2 13:51 .. lrwxrwxrwx 1 root root 12 Mar 2 13:51 platform-soc:audio -> ../controlC2 !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: HDMI [bcm2835 HDMI], device 0: bcm2835 HDMI [bcm2835 HDMI] Subdevices: 4/4 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 card 1: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 card 2: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 ARECORD **** List of CAPTURE Hardware Devices **** !!Amixer output !!------------- !!-------Mixer controls for card 0 [HDMI] Card hw:0 'HDMI'/'bcm2835 HDMI' Mixer name : 'Broadcom Mixer' Components : '' Controls : 2 Simple ctrls : 1 Simple mixer control 'HDMI',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback 0 [96%] [0.00dB] [on] !!-------Mixer controls for card 1 [b1] Card hw:1 'b1'/'bcm2835 HDMI 1' Mixer name : 'Broadcom Mixer' Components : '' Controls : 2 Simple ctrls : 1 Simple mixer control 'HDMI',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback 0 [96%] [0.00dB] [on] !!-------Mixer controls for card 2 [Headphones] Card hw:2 '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] !!Alsactl output !!-------------- --startcollapse-- state.HDMI { control.1 { iface MIXER name 'HDMI Playback Volume' value 0 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 0 } } control.2 { iface MIXER name 'HDMI Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.b1 { control.1 { iface MIXER name 'HDMI Playback Volume' value 0 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 0 } } control.2 { iface MIXER name 'HDMI Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } 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 } } } --endcollapse-- !!All Loaded Modules !!------------------ Module fuse uinput sha256_generic lzo lzo_compress cfg80211 rfkill zram zsmalloc evdev joydev hid_multitouch bcm2835_codec bcm2835_v4l2 raspberrypi_hwmon hwmon v4l2_common v4l2_mem2mem videobuf2_vmalloc snd_bcm2835 bcm2835_mmal_vchiq videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 snd_pcm videobuf2_common snd_timer snd videodev media vc_sm_cma fixed uio_pdrv_genirq uio ip_tables x_tables ipv6 !!ALSA/HDA dmesg !!-------------- [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 194880 [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 bcm2708_fb.fbwidth=1920 bcm2708_fb.fbheight=1080 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_compat_alsa=0 logo.nologo dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait cma=256MB fastboot noswap [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) -- [ 5.861066] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned. [ 5.863152] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 5.905686] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.