!!################################ !!ALSA Information Script v 0.4.64 !!################################ !!Script ran on: Sun Jun 16 00:38:07 UTC 2019 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: !!Kernel Information !!------------------ Kernel release: 4.19.42-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k4.19.42-v7 Library version: 1.1.3 Utilities version: 1.1.3 !!Loaded ALSA modules !!------------------- snd_bcm2835 snd_usb_audio !!Sound Servers on this system !!---------------------------- Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - Yes Jack: Installed - Yes (/usr/bin/jackd) Running - No !!Soundcards recognised by ALSA !!----------------------------- 0 [ALSA ]: bcm2835_alsa - bcm2835 ALSA bcm2835 ALSA 1 [C920 ]: USB-Audio - HD Pro Webcam C920 HD Pro Webcam C920 at usb-3f980000.usb-1.3, high speed !!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 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_compat_alsa : Y enable_hdmi : N enable_headphones : N force_bulk : N !!Module: snd_usb_audio autoclock : Y device_setup : 0,0,0,0,0,0,0,0 enable : Y,Y,Y,Y,Y,Y,Y,Y id : (null),(null),(null),(null),(null),(null),(null),(null) ignore_ctl_error : N index : -2,-1,-1,-1,-1,-1,-1,-1 pid : -1,-1,-1,-1,-1,-1,-1,-1 quirk_alias : (null),(null),(null),(null),(null),(null),(null),(null) use_vmalloc : Y vid : -1,-1,-1,-1,-1,-1,-1,-1 !!USB Mixer information !!--------------------- --startcollapse-- USB Mixer: usb_id=0x046d082d, ctrlif=2, ctlerr=0 Card: HD Pro Webcam C920 at usb-3f980000.usb-1.3, high speed Unit: 5 Control: name="Mic Capture Volume", index=0 Info: id=5, control=2, cmask=0x0, channels=1, type="S16" Volume: min=5120, max=12800, dBmin=2000, dBmax=5000 Unit: 5 Control: name="Mic Capture Switch", index=0 Info: id=5, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 --endcollapse-- !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Jun 15 17:51 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Jun 15 17:51 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 16 Jun 15 17:51 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 17 Jun 15 17:51 /dev/snd/pcmC0D1p crw-rw---- 1 root audio 116, 56 Jun 15 17:51 /dev/snd/pcmC1D0c crw-rw---- 1 root audio 116, 1 Jun 15 17:29 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Jun 15 17:51 /dev/snd/timer /dev/snd/by-id: total 0 drwxr-xr-x 2 root root 60 Jun 15 17:29 . drwxr-xr-x 4 root root 220 Jun 15 17:29 .. lrwxrwxrwx 1 root root 12 Jun 15 17:51 usb-046d_HD_Pro_Webcam_C920_5E8B45BF-02 -> ../controlC1 /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Jun 15 17:29 . drwxr-xr-x 4 root root 220 Jun 15 17:29 .. lrwxrwxrwx 1 root root 12 Jun 15 17:51 platform-3f980000.usb-usb-0:1.3:1.2 -> ../controlC1 lrwxrwxrwx 1 root root 12 Jun 15 17:51 platform-soc:audio -> ../controlC0 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) #pcm.!default { # type hw # card 0 #} #ctl.!default { # type hw # card 0 #} pcm.!default { type asym capture.pcm "mic" playback.pcm "speaker" } pcm.mic { type plug slave { pcm "hw:1,0" } } pcm.speaker { type plug slave { pcm "hw:0,0" } } pcm.record_left { type dsnoop ipc_key 234884 slave { pcm "hw:1,0" channels 2 rate 48000 } bindings.0 0 #pick one of the stereo mic channels } pcm.record_right { type dsnoop ipc_key 2241234 slave { pcm "hw:1,0" channels 2 rate 48000 } bindings.0 1 #pick the other of the stereo mic channels } !!System wide config file (/etc/asound.conf) pcm.mmap0 { type mmap_emul; slave { pcm "hw:0,0"; } } #pcm.!default { # type plug; # slave { # pcm mmap0; # } #} pcm.pulse { type pulse } ctl.pulse { type pulse } pcm.!default { type pulse } ctl.!default { type pulse } !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA] Subdevices: 7/7 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 card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 IEC958/HDMI [bcm2835 IEC958/HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 1: C920 [HD Pro Webcam C920], device 0: USB Audio [USB Audio] Subdevices: 0/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card 0 [ALSA] Card hw:0 'ALSA'/'bcm2835 ALSA' Mixer name : 'Broadcom Mixer' Components : '' Controls : 5 Simple ctrls : 1 Simple mixer control 'PCM',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -2489 [73%] [-24.89dB] [on] !!-------Mixer controls for card 1 [C920] Card hw:1 'C920'/'HD Pro Webcam C920 at usb-3f980000.usb-1.3, high speed' Mixer name : 'USB Mixer' Components : 'USB046d:082d' Controls : 4 Simple ctrls : 1 Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined Capture channels: Mono Limits: Capture 0 - 15 Mono: Capture 10 [67%] [40.00dB] [on] !!Alsactl output !!-------------- --startcollapse-- state.ALSA { control.1 { iface MIXER name 'PCM Playback Volume' value -2489 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -2489 } } control.2 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface MIXER name 'PCM Playback Route' value 0 comment { access 'read write' type INTEGER count 1 range '0 - 2' } } control.4 { iface PCM name 'IEC958 Playback Default' value '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read write' type IEC958 count 1 } } control.5 { iface PCM name 'IEC958 Playback Con Mask' value '0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access read type IEC958 count 1 } } } state.C920 { control.1 { iface PCM name 'Capture Channel Map' value.0 3 value.1 4 comment { access read type INTEGER count 2 range '0 - 36' } } control.2 { iface MIXER name 'Mic Capture Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface MIXER name 'Mic Capture Volume' value 10 comment { access 'read write' type INTEGER count 1 range '0 - 15' dbmin 2000 dbmax 5000 dbvalue.0 4000 } } control.4 { iface CARD name 'Keep Interface' value false comment { access 'read write' type BOOLEAN count 1 } } } --endcollapse-- !!All Loaded Modules !!------------------ Module hidp fuse hci_uart serdev rfcomm cmac bnep snd_usb_audio snd_hwdep uvcvideo snd_usbmidi_lib snd_rawmidi snd_seq_device brcmfmac brcmutil sha256_generic bcm2835_codec bcm2835_v4l2 v4l2_mem2mem cfg80211 v4l2_common bcm2835_mmal_vchiq videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common videodev media vc_sm_cma raspberrypi_hwmon snd_bcm2835 hwmon snd_pcm snd_timer snd uio_pdrv_genirq uio fixed hid_logitech_hidpp joydev evdev hid_logitech_dj btusb btrtl btintel btbcm bluetooth ecdh_generic rfkill i2c_dev ip_tables x_tables ipv6 !!ALSA/HDA dmesg !!-------------- [ 3.927612] random: 7 urandom warning(s) missed due to ratelimiting [ 3.967482] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 3.971937] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned. -- [ 4.965143] USB Video Class driver (1.1.1) [ 5.173558] usbcore: registered new interface driver snd-usb-audio [ 5.456583] uart-pl011 3f201000.serial: no DMA platform data