!!################################ !!ALSA Information Script v 0.4.64 !!################################ !!Script ran on: Sat May 1 20:23:00 UTC 2021 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 5.10.17-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k5.10.17-v7 Library version: 1.1.8 Utilities version: 1.1.8 !!Loaded ALSA modules !!------------------- snd_bcm2835 snd_bcm2835 !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [b1 ]: bcm2835_hdmi - bcm2835 HDMI 1 bcm2835 HDMI 1 1 [Headphones ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones bcm2835 Headphones !!PCI Soundcards installed in the system !!-------------------------------------- !!Advanced information - PCI Vendor/Device/Subsystem ID's !!------------------------------------------------------- !!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_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 May 1 06:17 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 May 1 06:17 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 16 May 1 06:17 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 48 May 1 06:17 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 1 May 1 14:14 /dev/snd/seq crw-rw---- 1 root audio 116, 33 May 1 06:17 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 60 May 1 06:17 . drwxr-xr-x 3 root root 180 May 1 06:17 .. lrwxrwxrwx 1 root root 12 May 1 06:17 platform-bcm2835_audio -> ../controlC1 !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1] Subdevices: 4/4 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones] Subdevices: 4/4 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 ARECORD **** List of CAPTURE Hardware Devices **** !!Amixer output !!------------- !!-------Mixer controls for card 0 [b1] Card hw:0 '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 -26 [96%] [-0.26dB] [on] !!-------Mixer controls for card 1 [Headphones] Card hw:1 '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 400 [100%] [4.00dB] [on] !!Alsactl output !!-------------- --startcollapse-- state.b1 { control.1 { iface MIXER name 'HDMI Playback Volume' value -26 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -26 } } 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 400 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 400 } } control.2 { iface MIXER name 'Headphone Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } --endcollapse-- !!All Loaded Modules !!------------------ Module snd_seq_dummy snd_seq snd_seq_device cmac bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc brcmfmac brcmutil joydev sha256_generic cfg80211 rfkill raspberrypi_hwmon bcm2835_codec snd_bcm2835 bcm2835_v4l2 v4l2_mem2mem bcm2835_isp bcm2835_mmal_vchiq snd_pcm videobuf2_dma_contig videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_timer videobuf2_common snd videodev mc vc_sm_cma uio_pdrv_genirq fixed uio uinput 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=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=1280 bcm2708_fb.fbheight=1024 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=a13f990a-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait loglevel=3 consoleblank=0 plymouth.enable=0 [ 0.000000] Kernel parameter elevator= does not have any effect anymore. -- [ 7.289284] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned. [ 7.294403] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 7.297127] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.