Audio stopped working after trying to re-install Pulseaudio

Asked by David

I am using Xubuntu 16.04 LTS.
1. I was trying to use a USB audio interface, but the pc wouldn't recognize the hardware was connected.
2, So, I tried the following codes in the Terminal to try and fix the issue:

sudo apt-get remove alsa-base pulseaudio
sudo apt-get purge alsa-base pulseaudio
sudo apt-get install alsa-base pulseaudio
sudo alsa force-reload
sudo start-pulseaudio-x11 start

NOW, if I do the following check:
sudo aplay -l

all it shows is the following:
**** List of PLAYBACK Hardware Devices ****
- with no further info.

If I do this in the Terminal:
pactl list short sources

it shows the following:
0 alsa_input.usb-046d_09a4_1D90F520-02.analog-mono module-alsa-card.c s16le 1ch 16000Hz SUSPENDED
1 auto_null.monitor module-null-sink.c s16le 2ch 44100Hz SUSPENDED

Here's more:
$ cat /proc/asound/cards
 1 [U0x46d0x9a4 ]: USB-Audio - USB Device 0x46d:0x9a4
                                        USB Device 0x46d:0x9a4 at usb-0000:00:1a.0-1.4, high speed

**MY CURRENT STATE IS, I HAVE NO AUDIO AT ALL. **

The following is what I get from the Terminal, using the code:
wget -O alsa-info.sh http://www.alsa-project.org/alsa-info.sh && chmod +x ./alsa-info.sh && ./alsa-info.sh

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

!!Script ran on: Tue Feb 13 10:12:35 UTC 2018

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

Ubuntu 16.04.3 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 16.04.3 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: LENOVO
Product Name: IdeaCentre K410
Product Version: Lenovo Product
Firmware Version: ECKT16A
Board Vendor: LENOVO
Board Name: MAHOBAY

!!ACPI Device Status Information
!!---------------

/sys/bus/acpi/devices/INT3F0D:00/status 15
/sys/bus/acpi/devices/PNP0103:00/status 15
/sys/bus/acpi/devices/PNP0501:00/status 15
/sys/bus/acpi/devices/PNP0C01:01/status 15
/sys/bus/acpi/devices/PNP0C0C:00/status 11
/sys/bus/acpi/devices/PNP0C0F:00/status 9
/sys/bus/acpi/devices/PNP0C0F:01/status 9
/sys/bus/acpi/devices/PNP0C0F:02/status 9
/sys/bus/acpi/devices/PNP0C0F:03/status 9
/sys/bus/acpi/devices/PNP0C0F:04/status 9
/sys/bus/acpi/devices/PNP0C0F:05/status 9
/sys/bus/acpi/devices/PNP0C0F:06/status 9
/sys/bus/acpi/devices/PNP0C0F:07/status 9

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

Kernel release: 4.4.0-112-generic
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes

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

Driver version: k4.4.0-112-generic
Library version: 1.1.0
Utilities version: 1.1.0

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

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
!!-----------------------------

 1 [U0x46d0x9a4 ]: USB-Audio - USB Device 0x46d:0x9a4
                      USB Device 0x46d:0x9a4 at usb-0000:00:1a.0-1.4, high speed

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

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)

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

00:1b.0 0403: 8086:1c20 (rev 05)
 Subsystem: 17aa:3653

!!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

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

!!Module: snd_usb_audio
 autoclock : Y
 device_setup : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
 id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
 ignore_ctl_error : N
 index : -2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
 pid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
 vid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1

!!USB Mixer information
!!---------------------
--startcollapse--

USB Mixer: usb_id=0x046d09a4, ctrlif=2, ctlerr=1
Card: USB Device 0x46d:0x9a4 at usb-0000:00:1a.0-1.4, high speed
  Unit: 5
    Control: name="Mic Capture Volume", index=0
    Info: id=5, control=2, cmask=0x0, channels=1, type="S16"
    Volume: min=6080, max=8768, dBmin=2375, dBmax=3425
  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, 2 Feb 12 22:30 /dev/snd/controlC1
crw-rw----+ 1 root audio 116, 3 Feb 13 01:25 /dev/snd/pcmC1D0c
crw-rw----+ 1 root audio 116, 1 Feb 12 22:30 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Feb 12 22:30 /dev/snd/timer

/dev/snd/by-id:
total 0
drwxr-xr-x 2 root root 60 Feb 12 22:30 .
drwxr-xr-x 4 root root 160 Feb 12 22:30 ..
lrwxrwxrwx 1 root root 12 Feb 12 22:30 usb-046d_09a4_1D90F520-02 -> ../controlC1

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root 60 Feb 12 22:30 .
drwxr-xr-x 4 root root 160 Feb 12 22:30 ..
lrwxrwxrwx 1 root root 12 Feb 12 22:30 pci-0000:00:1a.0-usb-0:1.4:1.2 -> ../controlC1

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

APLAY

**** List of PLAYBACK Hardware Devices ****

ARECORD

**** List of CAPTURE Hardware Devices ****
card 1: U0x46d0x9a4 [USB Device 0x46d:0x9a4], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

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

!!-------Mixer controls for card 1 [U0x46d0x9a4]

Card hw:1 'U0x46d0x9a4'/'USB Device 0x46d:0x9a4 at usb-0000:00:1a.0-1.4, high speed'
  Mixer name : 'USB Mixer'
  Components : 'USB046d:09a4'
  Controls : 3
  Simple ctrls : 1
Simple mixer control 'Mic',0
  Capabilities: cvolume cvolume-joined cswitch cswitch-joined
  Capture channels: Mono
  Limits: Capture 0 - 14
  Mono: Capture 14 [100%] [34.25dB] [on]

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

--startcollapse--
state.U0x46d0x9a4 {
 control.1 {
  iface PCM
  name 'Capture Channel Map'
  value 0
  comment {
   access read
   type INTEGER
   count 1
   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 14
  comment {
   access 'read write'
   type INTEGER
   count 1
   range '0 - 14'
   dbmin 2375
   dbmax 3425
   dbvalue.0 3425
  }
 }
}
--endcollapse--

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

Module
binfmt_misc
intel_rapl
x86_pkg_temp_thermal
intel_powerclamp
coretemp
kvm_intel
kvm
irqbypass
crct10dif_pclmul
crc32_pclmul
ghash_clmulni_intel
cryptd
snd_hda_codec_hdmi
snd_hda_codec_realtek
snd_hda_codec_generic
uvcvideo
videobuf2_vmalloc
videobuf2_memops
videobuf2_v4l2
videobuf2_core
v4l2_common
videodev
snd_usb_audio
joydev
input_leds
serio_raw
media
snd_usbmidi_lib
snd_hda_intel
snd_hda_codec
snd_hda_core
snd_hwdep
snd_pcm
lpc_ich
snd_seq_midi
snd_seq_midi_event
snd_rawmidi
snd_seq
snd_seq_device
snd_timer
snd
soundcore
shpchp
8250_fintek
mac_hid
parport_pc
ppdev
lp
parport
autofs4
hid_generic
uas
usb_storage
usbhid
hid
i915
i2c_algo_bit
psmouse
ahci
drm_kms_helper
libahci
syscopyarea
sysfillrect
sysimgblt
r8169
fb_sys_fops
mii
drm
fjes
video

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

[ 31.462197] lpc_ich: Resource conflict(s) found affecting gpio_ich
[ 31.861731] snd_hda_core: module verification failed: signature and/or required key missing - tainting kernel
[ 31.875549] snd_hda_intel 0000:00:1b.0: Probing card using HDA DKMS, version 0.201802112140~ubuntu16.04.1
[ 31.875563] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)
[ 31.875697] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 31.881622] media: Linux media interface: v0.10
--
[ 31.962476] usb 1-1.4: set volume quirk for QuickCam E3500
[ 31.962598] usbcore: registered new interface driver snd-usb-audio
[ 32.032500] uvcvideo: Found UVC 1.00 device <unnamed> (046d:09a4)
--
[ 32.049411] USB Video Class driver (1.1.1)
[ 32.117861] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC662 rev3: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[ 32.117865] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 32.117867] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[ 32.117868] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 32.117869] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 32.117872] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19
[ 32.117873] snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18
[ 32.117875] snd_hda_codec_realtek hdaudioC0D0: Line=0x1a
[ 32.129199] BUG: unable to handle kernel NULL pointer dereference at (null)
--
[ 32.129312] Oops: 0002 [#1] SMP
[ 32.129331] Modules linked in: snd_hda_codec_hdmi(OE+) snd_hda_codec_realtek(OE) snd_hda_codec_generic(OE) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev snd_usb_audio joydev input_leds serio_raw media snd_usbmidi_lib snd_hda_intel(OE) snd_hda_codec(OE) snd_hda_core(OE) snd_hwdep snd_pcm lpc_ich snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore shpchp 8250_fintek mac_hid parport_pc ppdev lp parport autofs4 hid_generic uas usb_storage usbhid hid i915 i2c_algo_bit psmouse ahci drm_kms_helper libahci syscopyarea sysfillrect sysimgblt r8169 fb_sys_fops mii drm fjes video
[ 32.129674] CPU: 0 PID: 399 Comm: modprobe Tainted: G OE 4.4.0-112-generic #135-Ubuntu
--
[ 32.130184] Call Trace:
[ 32.130202] [<ffffffffc03590c4>] snd_hdac_acomp_get_eld+0x64/0x80 [snd_hda_core]
[ 32.130233] [<ffffffffc03dfe49>] hdmi_present_sense+0xa9/0x3b0 [snd_hda_codec_hdmi]
[ 32.130265] [<ffffffffc03e0acb>] generic_hdmi_build_controls+0x15b/0x200 [snd_hda_codec_hdmi]
[ 32.130304] [<ffffffffc037999a>] snd_hda_codec_build_controls+0x1ba/0x200 [snd_hda_codec]
[ 32.130338] [<ffffffffc0374483>] hda_codec_driver_probe+0x93/0x120 [snd_hda_codec]
[ 32.130370] [<ffffffff81565972>] driver_probe_device+0x222/0x4a0
--
[ 32.130536] [<ffffffff81566580>] driver_register+0x60/0xe0
[ 32.130561] [<ffffffffc03740da>] __hda_codec_driver_register+0x5a/0x60 [snd_hda_codec]
[ 32.130594] [<ffffffffc045701e>] hdmi_driver_init+0x1e/0x1000 [snd_hda_codec_hdmi]
[ 32.130624] [<ffffffff81002123>] do_one_initcall+0xb3/0x200

Question information

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For:
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Revision history for this message
David (hienz1) said :
#1

I also posted on and asked for help on the following website:

https://askubuntu.com/questions/1005422/audio-reverb-always-on

which has more info, if needed.

Revision history for this message
Launchpad Janitor (janitor) said :
#2

This question was expired because it remained in the 'Open' state without activity for the last 15 days.