== snd-firewire-lib, snd-bebob, snd-fireworks, snd-dice, snd-oxfw and snd-digi00x == They are device drivers utilize Advanced Linux Sound Architecture (ALSA) and Linux Firewire Subsystem (so called "juju"). - snd-bebob: for devices based on BridgeCo's chipset and BeBoB firmware - snd-fireworks: for devices based on Echo Audio's Fireworks module - snd-dice: for devices based on TC Applied Technologies DICE chipset family - snd-oxfw: for devices based on Oxford Semiconductor OXFW970/971 chipset - snd-digi00x: for Digidesign 002/003 family - snd-firewire-lib: for helper functions of AMDTP/CMP/FCP and AV/C commands
https://github.com/takaswie/snd-firewire-improve
Let’s try if this works.
Install: 1. $ git clone https://github.com/takaswie/snd-firewire-improve.git 2. $ ln -s $(pwd)/snd-firewire-improve/ /usr/src/alsa-firewire-3.11 (superuser) 3. $ dkms install alsa-firewire/3.11 (superuser)
% modprobe snd-bebob
% ls -l /proc/asound
dr-xr-xr-x 6 root root 0 Apr 22 09:03 card0
dr-xr-xr-x 3 root root 0 Apr 22 09:03 card1
dr-xr-xr-x 5 root root 0 Apr 22 09:03 card2
lrwxrwxrwx 1 root root 5 Apr 22 09:03 MID -> card0
lrwxrwxrwx 1 root root 5 Apr 22 09:03 HDMI -> card1
lrwxrwxrwx 1 root root 5 Apr 22 09:03 Orpheus -> card2
% aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC889 Analog [ALC889 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 3: ALC889 Digital [ALC889 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: Orpheus [Orpheus], device 0: BeBoB [Orpheus PCM]
Subdevices: 1/1
Subdevice #0: subdevice #0
user1@UNIX [09:03:37] [~]
% aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
rawjack
jack
JACK Audio Connection Kit
default
Playback/recording through the PulseAudio sound server
sysdefault:CARD=MID
HDA Intel MID, ALC889 Analog
Default Audio Device
front:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
Front speakers
surround40:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=MID,DEV=0
HDA Intel MID, ALC889 Digital
HDMI Audio Output
dmix:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
Direct sample mixing device
dmix:CARD=MID,DEV=3
HDA Intel MID, ALC889 Digital
Direct sample mixing device
dsnoop:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
Direct sample snooping device
dsnoop:CARD=MID,DEV=3
HDA Intel MID, ALC889 Digital
Direct sample snooping device
hw:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
Direct hardware device without any conversions
hw:CARD=MID,DEV=3
HDA Intel MID, ALC889 Digital
Direct hardware device without any conversions
plughw:CARD=MID,DEV=0
HDA Intel MID, ALC889 Analog
Hardware device with all software conversions
plughw:CARD=MID,DEV=3
HDA Intel MID, ALC889 Digital
Hardware device with all software conversions
hdmi:CARD=HDMI,DEV=0
HDA ATI HDMI, HDMI 0
HDMI Audio Output
dmix:CARD=HDMI,DEV=3
HDA ATI HDMI, HDMI 0
Direct sample mixing device
dsnoop:CARD=HDMI,DEV=3
HDA ATI HDMI, HDMI 0
Direct sample snooping device
hw:CARD=HDMI,DEV=3
HDA ATI HDMI, HDMI 0
Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=3
HDA ATI HDMI, HDMI 0
Hardware device with all software conversions
sysdefault:CARD=Orpheus
Orpheus, Orpheus PCM
Default Audio Device
dmix:CARD=Orpheus,DEV=0
Orpheus, Orpheus PCM
Direct sample mixing device
dsnoop:CARD=Orpheus,DEV=0
Orpheus, Orpheus PCM
Direct sample snooping device
hw:CARD=Orpheus,DEV=0
Orpheus, Orpheus PCM
Direct hardware device without any conversions
plughw:CARD=Orpheus,DEV=0
Orpheus, Orpheus PCM
Hardware device with all software conversions
Looks nice, but …
% aplay -D hw:2,0 Music/01-Taking_Chances.wav Playing WAVE 'Music/01-Taking_Chances.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo aplay: set_params:1239: Channels count non available % aplay -D hw:2,0 --channels=2 Music/01-Taking_Chances.wav Playing WAVE 'Music/01-Taking_Chances.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo aplay: set_params:1239: Channels count non available
Let’s look into aplay.c to see what is happening.
1237 err = snd_pcm_hw_params_set_channels(handle, params, hwparams.channels);
1238 if (err < 0) {
1239 error(_("Channels count non available"));
1240 prg_exit(EXIT_FAILURE);
1241 }