Output of several commands used to set up ALSA.

ALSA_log.txt

# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC883 Analog [ALC883 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC883 Digital [ALC883 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

# ~/.asoundrc
defaults.pcm.card 0
defaults.pcm.device 1
defaults.ctl.card 0

# lsmod | grep '^snd' | column -t
snd_pcm_oss            38850   0
snd_mixer_oss          15275   1   snd_pcm_oss
snd_seq_dummy          1463    0
snd_seq_oss            29172   0
snd_seq_midi_event     5660    1   snd_seq_oss
snd_seq                50849   5   snd_seq_midi_event,snd_seq_oss,snd_seq_dummy
snd_seq_device         5300    3   snd_seq,snd_seq_oss,snd_seq_dummy
snd_hda_codec_realtek  195850  1
snd_hda_intel          23375   0
snd_hda_codec          89389   2   snd_hda_intel,snd_hda_codec_realtek
snd_hwdep              6389    1   snd_hda_codec
snd_pcm                74780   3   snd_hda_codec,snd_hda_intel,snd_pcm_oss
snd_page_alloc         7153    2   snd_pcm,snd_hda_intel
snd_timer              19544   2   snd_pcm,snd_seq
snd                    59214   11  snd_timer,snd_pcm,snd_hwdep,snd_hda_codec,snd_hda_intel,snd_hda_codec_realtek,snd_seq_device,snd_seq,snd_seq_oss,snd_mixer_oss,snd_pcm_oss

# ls -l /dev/snd
total 0
drwxr-xr-x 2 root root       60 Apr  7 16:22 by-path
crw-rw---- 1 root audio 116,  8 Apr  7 23:08 controlC0
crw-rw---- 1 root audio 116,  7 Apr  7 23:08 hwC0D0
crw-rw---- 1 root audio 116,  6 Apr  7 23:08 hwC0D1
crw-rw---- 1 root audio 116,  5 Apr  7 23:08 pcmC0D0c
crw-rw---- 1 root audio 116,  4 Apr  7 23:08 pcmC0D0p
crw-rw---- 1 root audio 116,  3 Apr  7 23:38 pcmC0D1p
crw-rw---- 1 root audio 116,  2 Apr  7 23:08 pcmC0D2c
crw-rw---- 1 root audio 116,  1 Apr  7 23:20 seq
crw-rw---- 1 root audio 116, 33 Apr  7 23:08 timer

# amixer
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [12.00dB] [on]
  Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 26 [84%] [4.50dB] [on]
  Front Right: Playback 26 [84%] [4.50dB] [on]
Simple mixer control 'Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 1 [33%] [10.00dB]
  Front Right: 1 [33%] [10.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 23 [74%] [0.00dB] [on]
  Front Right: Playback 23 [74%] [0.00dB] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 16 [52%] [12.00dB] [on]
  Front Right: Capture 16 [52%] [12.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 0 [0%] [-12.00dB] [off]
  Front Right: Capture 0 [0%] [-12.00dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Channel Mode',0
  Capabilities: enum
  Items: '2ch' '4ch' '6ch'
  Item0: '2ch'
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Line'
  Item0: 'Internal Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Line'
  Item0: 'Mic'
Simple mixer control 'Internal Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 10 [32%] [-19.50dB] [on]
  Front Right: Playback 10 [32%] [-19.50dB] [on]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 3 [100%] [30.00dB]
  Front Right: 3 [100%] [30.00dB]