audio files not playing

Can you please select to not upload, then open the resulting file in gedit (or similar) and paste the text as an update on
https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/401392

Thanks

Thanks @actionparsnip. First time using this. :-)

upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.64
!!################################

!!Script ran on: Tue Sep 20 17:25:02 UTC 2016

!!Linux Distribution
!!------------------

Ubuntu 16.04.1 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 16.04.1 LTS" HOME_URL="http://www.ubuntu.com/" SUPPORT_URL="http://help.ubuntu.com/" BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/" UBUNTU_CODENAME=xenial

!!DMI Information
!!---------------

Manufacturer: innotek GmbH
Product Name: VirtualBox
Product Version: 1.2
Firmware Version: VirtualBox

!!Kernel Information
!!------------------

Kernel release: 4.4.0-38-generic
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes

!!ALSA Version
!!------------

Driver version: k4.4.0-38-generic
Library version: 1.1.0
Utilities version: 1.1.0

!!Loaded ALSA modules
!!-------------------

snd_intel8x0

!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes

!!Soundcards recognised by ALSA
!!-----------------------------

 0 [I82801AAICH ]: ICH - Intel 82801AA-ICH
                      Intel 82801AA-ICH with AD1980 at irq 21

!!PCI Soundcards installed in the system
!!--------------------------------------

00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01)

!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------

00:05.0 0401: 8086:2415 (rev 01)
 Subsystem: 1028:0177

!!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_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_usb_audio: index=-2
snd_usb_caiaq: index=-2
snd_usb_ua101: index=-2
snd_usb_us122l: index=-2
snd_usb_usx2y: index=-2
snd_cmipci: mpu_port=0x330 fm_port=0x388
snd_pcsp: index=-2
snd_usb_audio: index=-2

!!Loaded sound module options
!!---------------------------

!!Module: snd_intel8x0
 ac97_clock : 0
 ac97_quirk : (null)
 buggy_irq : 0
 buggy_semaphore : N
 enable : N
 id : (null)
 index : -1
 inside_vm : -1
 joystick : 0
 spdif_aclink : 0
 xbox : N

!!AC97 Codec information
!!----------------------
--startcollapse--

0-0/0: Analog Devices AD1980

PCI Subsys Vendor: 0x1028
PCI Subsys Device: 0x0177

Flags: 12
Revision : 0x00
Compat. Class : 0x00
Subsys. Vendor ID: 0x0000
Subsys. ID : 0x0000

Capabilities : -headphone out-
DAC resolution : 16-bit
ADC resolution : 16-bit
3D enhancement : No 3D Stereo Enhancement

Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic2
ADC/DAC loopback : off
Extended ID : codec=0 rev=2 DSA=0 VRM VRA
Extended status : VRM VRA
PCM front DAC : 48000Hz
PCM ADC : 44100Hz
PCM MIC ADC : 48000Hz

0-0/1: Analog Devices AD1980

PCI Subsys Vendor: 0x1028
PCI Subsys Device: 0x0177

Flags: 12
Revision : 0x00
Compat. Class : 0x00
Subsys. Vendor ID: 0x0000
Subsys. ID : 0x0000

Capabilities : -headphone out-
DAC resolution : 16-bit
ADC resolution : 16-bit
3D enhancement : No 3D Stereo Enhancement

Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic2
ADC/DAC loopback : off
Extended ID : codec=0 rev=2 DSA=0 VRM VRA
Extended status : VRM VRA
PCM front DAC : 48000Hz
PCM ADC : 44100Hz
PCM MIC ADC : 48000Hz

0-0/2: Analog Devices AD1980

PCI Subsys Vendor: 0x1028
PCI Subsys Device: 0x0177

Flags: 12
Revision : 0x00
Compat. Class : 0x00
Subsys. Vendor ID: 0x0000
Subsys. ID : 0x0000

Capabilities : -headphone out-
DAC resolution : 16-bit
ADC resolution : 16-bit
3D enhancement : No 3D Stereo Enhancement

Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic2
ADC/DAC loopback : off
Extended ID : codec=0 rev=2 DSA=0 VRM VRA
Extended status : VRM VRA
PCM front DAC : 48000Hz
PCM ADC : 44100Hz
PCM MIC ADC : 48000Hz

AD18XX configuration
Unchained : 0x1000,0x4000,0x2000
Chained : 0x0000,0x0000,0x0000

0:00 = 0010
0:02 = 8000
0:04 = 0202
0:06 = bfbf
0:08 = 0000
0:0a = 801e
0:0c = bfbf
0:0e = 8282
0:10 = 8282
0:12 = 8282
0:14 = 8282
0:16 = bfbf
0:18 = 0000
0:1a = 0000
0:1c = 0707
0:1e = 8000
0:20 = 0100
0:22 = 0000
0:24 = 0000
0:26 = 800f
0:28 = 0809
0:2a = 0009
0:2c = bb80
0:2e = bb80
0:30 = bb80
0:32 = ac44
0:34 = bb80
0:36 = 0000
0:38 = 0000
0:3a = 0000
0:3c = 0000
0:3e = 0000
0:40 = 0000
0:42 = 0000
0:44 = 0000
0:46 = 0000
0:48 = 0000
0:4a = 0000
0:4c = 0000
0:4e = 0000
0:50 = 0000
0:52 = 0000
0:54 = 0000
0:56 = 0000
0:58 = 0000
0:5a = 0000
0:5c = 0000
0:5e = 0000
0:60 = 0000
0:62 = 0000
0:64 = 0000
0:66 = 0016
0:68 = 0000
0:6a = 0000
0:6c = 0000
0:6e = 0000
0:70 = 0000
0:72 = 0000
0:74 = 1000
0:76 = 7c20
0:78 = 0000
0:7a = 0000
0:7c = 4144
0:7e = 5370
1:00 = 0010
1:02 = 8000
1:04 = 0202
1:06 = bfbf
1:08 = 0000
1:0a = 801e
1:0c = bfbf
1:0e = 8282
1:10 = 8282
1:12 = 8282
1:14 = 8282
1:16 = bfbf
1:18 = 0000
1:1a = 0000
1:1c = 0707
1:1e = 8000
1:20 = 0100
1:22 = 0000
1:24 = 0000
1:26 = 800f
1:28 = 0809
1:2a = 0009
1:2c = bb80
1:2e = bb80
1:30 = bb80
1:32 = ac44
1:34 = bb80
1:36 = 0000
1:38 = 0000
1:3a = 0000
1:3c = 0000
1:3e = 0000
1:40 = 0000
1:42 = 0000
1:44 = 0000
1:46 = 0000
1:48 = 0000
1:4a = 0000
1:4c = 0000
1:4e = 0000
1:50 = 0000
1:52 = 0000
1:54 = 0000
1:56 = 0000
1:58 = 0000
1:5a = 0000
1:5c = 0000
1:5e = 0000
1:60 = 0000
1:62 = 0000
1:64 = 0000
1:66 = 0016
1:68 = 0000
1:6a = 0000
1:6c = 0000
1:6e = 0000
1:70 = 0000
1:72 = 0000
1:74 = 4000
1:76 = 7c20
1:78 = 0000
1:7a = 0000
1:7c = 4144
1:7e = 5370
2:00 = 0010
2:02 = 8000
2:04 = 0202
2:06 = bfbf
2:08 = 0000
2:0a = 801e
2:0c = bfbf
2:0e = 8282
2:10 = 8282
2:12 = 8282
2:14 = 8282
2:16 = bfbf
2:18 = 0000
2:1a = 0000
2:1c = 0707
2:1e = 8000
2:20 = 0100
2:22 = 0000
2:24 = 0000
2:26 = 800f
2:28 = 0809
2:2a = 0009
2:2c = bb80
2:2e = bb80
2:30 = bb80
2:32 = ac44
2:34 = bb80
2:36 = 0000
2:38 = 0000
2:3a = 0000
2:3c = 0000
2:3e = 0000
2:40 = 0000
2:42 = 0000
2:44 = 0000
2:46 = 0000
2:48 = 0000
2:4a = 0000
2:4c = 0000
2:4e = 0000
2:50 = 0000
2:52 = 0000
2:54 = 0000
2:56 = 0000
2:58 = 0000
2:5a = 0000
2:5c = 0000
2:5e = 0000
2:60 = 0000
2:62 = 0000
2:64 = 0000
2:66 = 0016
2:68 = 0000
2:6a = 0000
2:6c = 0000
2:6e = 0000
2:70 = 0000
2:72 = 0000
2:74 = 2000
2:76 = 7c20
2:78 = 0000
2:7a = 0000
2:7c = 4144
2:7e = 5370
--endcollapse--

!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116, 2 Sep 20 12:45 /dev/snd/controlC0
crw-rw----+ 1 root audio 116, 4 Sep 20 13:06 /dev/snd/pcmC0D0c
crw-rw----+ 1 root audio 116, 3 Sep 20 13:13 /dev/snd/pcmC0D0p
crw-rw----+ 1 root audio 116, 5 Sep 20 12:45 /dev/snd/pcmC0D1c
crw-rw----+ 1 root audio 116, 1 Sep 20 12:45 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Sep 20 12:45 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root 60 Sep 20 12:45 .
drwxr-xr-x 3 root root 180 Sep 20 12:45 ..
lrwxrwxrwx 1 root root 12 Sep 20 12:45 pci-0000:00:05.0 -> ../controlC0

!!Aplay/Arecord output
!!--------------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: I82801AAICH [Intel 82801AA-ICH], device 1: Intel ICH - MIC ADC [Intel 82801AA-ICH - MIC ADC]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

!!Amixer output
!!-------------

!!-------Mixer controls for card 0 [I82801AAICH]

Card hw:0 'I82801AAICH'/'Intel 82801AA-ICH with AD1980 at irq 21'
  Mixer name : 'Analog Devices AD1980'
  Components : 'AC97a:41445370'
  Controls : 46
  Simple ctrls : 32
Simple mixer control 'Master',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 29 [94%] [-3.00dB] [on]
  Front Right: Playback 29 [94%] [-3.00dB] [on]
Simple mixer control 'Master Mono',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Mono:
  Front Left: Playback 0 [0%] [-94.50dB] [off]
  Front Right: Playback 0 [0%] [-94.50dB] [off]
Simple mixer control 'Headphone Jack Sense',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control '3D Control - Switch',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch
  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 Out Path & Mute',0
  Capabilities: enum
  Items: 'pre 3D' 'post 3D'
  Item0: 'pre 3D'
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  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 'Surround Jack Mode',0
  Capabilities: enum
  Items: 'Shared' 'Independent'
  Item0: 'Shared'
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 15
  Mono: Playback 15 [100%] [-24.00dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 15
  Mono: Playback 15 [100%] [-24.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 29 [94%] [9.00dB] [off] Capture [off]
  Front Right: Playback 29 [94%] [9.00dB] [off] Capture [off]
Simple mixer control 'Line Jack Sense',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 61 [97%] [57.00dB] [off] Capture [off]
  Front Right: Playback 61 [97%] [57.00dB] [off] Capture [off]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 61 [97%] [57.00dB] [off] Capture [on]
  Front Right: Playback 61 [97%] [57.00dB] [off] Capture [on]
Simple mixer control 'Mic Boost (+20dB)',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Mic Select',0
  Capabilities: enum
  Items: 'Mic1' 'Mic2'
  Item0: 'Mic2'
Simple mixer control 'Video',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 61 [97%] [57.00dB] [off] Capture [off]
  Front Right: Playback 61 [97%] [57.00dB] [off] Capture [off]
Simple mixer control 'Phone',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 0 [0%] [-34.50dB] [off] Capture [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off] Capture [off]
Simple mixer control 'Beep',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 15
  Mono: Playback 0 [0%] [-45.00dB] [off]
Simple mixer control 'Aux',0
  Capabilities: pvolume pswitch cswitch cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 0 [0%] [-34.50dB] [off] Capture [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off] Capture [off]
Simple mixer control 'Mono Output Select',0
  Capabilities: enum
  Items: 'Mix' 'Mic'
  Item0: 'Mix'
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 15
  Front Left: Capture 7 [47%] [10.50dB] [on]
  Front Right: Capture 7 [47%] [10.50dB] [on]
Simple mixer control 'Mix',0
  Capabilities: cswitch cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Front Left - Front Right
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Mix Mono',0
  Capabilities: cswitch cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Front Left - Front Right
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Channel Mode',0
  Capabilities: enum
  Items: '2ch' '4ch' '6ch'
  Item0: '2ch'
Simple mixer control 'Downmix',0
  Capabilities: enum
  Items: 'Off' '6 -> 4' '6 -> 2'
  Item0: 'Off'
Simple mixer control 'Exchange Front/Surround',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'External Amplifier',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'High Pass Filter Enable',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Spread Front to Surround and Center/LFE',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Stereo Mic',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'V_REFOUT Enable',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]

!!Alsactl output
!!--------------

--startcollapse--
state.I82801AAICH {
 control.1 {
  iface MIXER
  name 'Master Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.2 {
  iface MIXER
  name 'Master Playback Volume'
  value.0 29
  value.1 29
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -4650
   dbmax 0
   dbvalue.0 -300
   dbvalue.1 -300
  }
 }
 control.3 {
  iface MIXER
  name 'Master Mono Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.4 {
  iface MIXER
  name 'Master Mono Playback Volume'
  value.0 0
  value.1 0
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -9450
   dbmax 0
   dbvalue.0 -9450
   dbvalue.1 -9450
  }
 }
 control.5 {
  iface MIXER
  name 'Beep Playback Switch'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.6 {
  iface MIXER
  name 'Beep Playback Volume'
  value 0
  comment {
   access 'read write'
   type INTEGER
   count 1
   range '0 - 15'
   dbmin -4500
   dbmax 0
   dbvalue.0 -4500
  }
 }
 control.7 {
  iface MIXER
  name 'Phone Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.8 {
  iface MIXER
  name 'Phone Playback Volume'
  value.0 0
  value.1 0
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -3450
   dbmax 6000
   dbvalue.0 -3450
   dbvalue.1 -3450
  }
 }
 control.9 {
  iface MIXER
  name 'Mic Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.10 {
  iface MIXER
  name 'Mic Playback Volume'
  value.0 61
  value.1 61
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -3450
   dbmax 6000
   dbvalue.0 5700
   dbvalue.1 5700
  }
 }
 control.11 {
  iface MIXER
  name 'Mic Boost (+20dB)'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.12 {
  iface MIXER
  name 'Line Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.13 {
  iface MIXER
  name 'Line Playback Volume'
  value.0 29
  value.1 29
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -3450
   dbmax 1200
   dbvalue.0 900
   dbvalue.1 900
  }
 }
 control.14 {
  iface MIXER
  name 'CD Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.15 {
  iface MIXER
  name 'CD Playback Volume'
  value.0 61
  value.1 61
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -3450
   dbmax 6000
   dbvalue.0 5700
   dbvalue.1 5700
  }
 }
 control.16 {
  iface MIXER
  name 'Video Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.17 {
  iface MIXER
  name 'Video Playback Volume'
  value.0 61
  value.1 61
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -3450
   dbmax 6000
   dbvalue.0 5700
   dbvalue.1 5700
  }
 }
 control.18 {
  iface MIXER
  name 'Aux Playback Switch'
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.19 {
  iface MIXER
  name 'Aux Playback Volume'
  value.0 0
  value.1 0
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 63'
   dbmin -3450
   dbmax 6000
   dbvalue.0 -3450
   dbvalue.1 -3450
  }
 }
 control.20 {
  iface MIXER
  name 'PCM Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.21 {
  iface MIXER
  name 'PCM Playback Volume'
  value.0 31
  value.1 31
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -4650
   dbmax 0
   dbvalue.0 0
   dbvalue.1 0
  }
 }
 control.22 {
  iface MIXER
  name 'Surround Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.23 {
  iface MIXER
  name 'Surround Playback Volume'
  value.0 31
  value.1 31
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -4650
   dbmax 0
   dbvalue.0 0
   dbvalue.1 0
  }
 }
 control.24 {
  iface MIXER
  name 'Center Playback Switch'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.25 {
  iface MIXER
  name 'Center Playback Volume'
  value 15
  comment {
   access 'read write'
   type INTEGER
   count 1
   range '0 - 15'
   dbmin -4650
   dbmax -2400
   dbvalue.0 -2400
  }
 }
 control.26 {
  iface MIXER
  name 'LFE Playback Switch'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.27 {
  iface MIXER
  name 'LFE Playback Volume'
  value 15
  comment {
   access 'read write'
   type INTEGER
   count 1
   range '0 - 15'
   dbmin -4650
   dbmax -2400
   dbvalue.0 -2400
  }
 }
 control.28 {
  iface MIXER
  name 'Capture Source'
  value.0 Mic
  value.1 Mic
  comment {
   access 'read write'
   type ENUMERATED
   count 2
   item.0 Mic
   item.1 CD
   item.2 Video
   item.3 Aux
   item.4 Line
   item.5 Mix
   item.6 'Mix Mono'
   item.7 Phone
  }
 }
 control.29 {
  iface MIXER
  name 'Capture Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.30 {
  iface MIXER
  name 'Capture Volume'
  value.0 7
  value.1 7
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 15'
   dbmin 0
   dbmax 2250
   dbvalue.0 1050
   dbvalue.1 1050
  }
 }
 control.31 {
  iface MIXER
  name 'PCM Out Path & Mute'
  value 'pre 3D'
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 'pre 3D'
   item.1 'post 3D'
  }
 }
 control.32 {
  iface MIXER
  name '3D Control - Switch'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.33 {
  iface MIXER
  name 'Mono Output Select'
  value Mix
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Mix
   item.1 Mic
  }
 }
 control.34 {
  iface MIXER
  name 'Mic Select'
  value Mic2
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Mic1
   item.1 Mic2
  }
 }
 control.35 {
  iface MIXER
  name 'Exchange Front/Surround'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.36 {
  iface MIXER
  name 'V_REFOUT Enable'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.37 {
  iface MIXER
  name 'High Pass Filter Enable'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.38 {
  iface MIXER
  name 'Spread Front to Surround and Center/LFE'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.39 {
  iface MIXER
  name Downmix
  value Off
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Off
   item.1 '6 -> 4'
   item.2 '6 -> 2'
  }
 }
 control.40 {
  iface MIXER
  name 'Surround Jack Mode'
  value Shared
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Shared
   item.1 Independent
  }
 }
 control.41 {
  iface MIXER
  name 'Channel Mode'
  value '2ch'
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 '2ch'
   item.1 '4ch'
   item.2 '6ch'
  }
 }
 control.42 {
  iface MIXER
  name 'Headphone Jack Sense'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.43 {
  iface MIXER
  name 'Line Jack Sense'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.44 {
  iface MIXER
  name 'Stereo Mic'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.45 {
  iface MIXER
  name 'External Amplifier'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.46 {
  iface PCM
  name 'Playback Channel Map'
  value.0 3
  value.1 4
  value.2 0
  value.3 0
  value.4 0
  value.5 0
  comment {
   access read
   type INTEGER
   count 6
   range '0 - 36'
  }
 }
}
--endcollapse--

!!All Loaded Modules
!!------------------

Module
binfmt_misc
isofs
pci_stub
vboxpci
vboxnetadp
vboxnetflt
vboxdrv
md4
nls_utf8
cifs
fscache
vboxsf
snd_intel8x0
snd_ac97_codec
ac97_bus
snd_pcm
snd_seq_midi
snd_seq_midi_event
joydev
snd_rawmidi
crct10dif_pclmul
crc32_pclmul
snd_seq
aesni_intel
aes_x86_64
lrw
gf128mul
glue_helper
ablk_helper
cryptd
snd_seq_device
snd_timer
vboxvideo
input_leds
serio_raw
ttm
snd
i2c_piix4
drm_kms_helper
soundcore
vboxguest
8250_fintek
drm
mac_hid
fb_sys_fops
syscopyarea
sysfillrect
sysimgblt
parport_pc
sunrpc
ppdev
lp
parport
autofs4
hid_generic
usbhid
hid
fjes
video
psmouse
ahci
libahci
pata_acpi
e1000

!!ALSA/HDA dmesg
!!--------------

[ 5.805459] intel_rapl: no valid rapl domains found in package 0
[ 6.123171] snd_intel8x0 0000:00:05.0: disable (unknown or VT-d) VM optimization
[ 6.371658] vboxsf: Successfully loaded version 5.0.18_Ubuntu (interface 0x00010004)
--
[ 6.725928] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s3: link becomes ready
[ 6.735551] snd_intel8x0 0000:00:05.0: white list rate for 1028:0177 is 48000
[ 7.107782] VBoxService 5.1.6 r110634 (verbosity: 0) linux.amd64 (Sep 12 2016 18:11:10) release log

I should also add that I am running Ubuntu 16.04 LTS in a VirtualBox VM. I had a problem with my current state yesterday and reverted to snapshot that was about a month old. I've been restoring files, cherry picking, and vowing to never have to revert to a snapshot that old again!

Yes. It's significant. Did you install the guest additions?

Do you have sound enabled in the configuration of the virtual system?

Yes, I do have guest additions installed. I also ran apt-get update and upgrade and subsequently VBOXADDITIONS_5.1.6_110634/VBoxLinuxAddiotions.run script to update guest additoins.

Also, I do have audio enabled.

Also, I ran apt-get dist-upgrade.

So, it seems that I've been able to fix the problem by doing the following:

1. While my Ubuntu VM was shutdown I went into the sound settings in VirtualBox, unchecked the enable checkbox and then booted into Ubuntu. As you would expect, I still have no sound.
2. Shutdown the Ubuntu VM again and then checked the box to re-enabled sound in my VirtualBox settings and then booted Ubuntu.
3. Still, I do not have sound but, from the command prompt I was able to start the sound server manually by typing

    sudo pulseaudio

At this point sound works for me! I still don't know if pulseaudio will automatically start for me when I reboot, so I may still have to do more configuration, but we'll see.

Another issue was that the volumn indicator in my taskbar was not showing. I found an article at https://itsfoss.com/fix-missing-sound-indicator-applet-ubuntu-1404/ that gave me the solution. In fact, I received and error message identical to the one in the article:

> The following schema is missing
> com.canonical.
> In oreder to work properly, Unity Tweak Tool recommends you install the necesary packages.

I continued following the steps in the article, installed indicator-sound and ran

    killall unity-panel-service

And Voila, I have a sound indicator!

BTW, I need to fix a typo. In the error message quote, com.canonical. should have read com.canonical.indicator.sound