Audio stopped working after trying to re-install Pulseaudio
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-pulseaudi
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.
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
**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://
upload=
!!#####
!!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_
!!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/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
/sys/bus/
!!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/
Running - Yes
Jack:
Installed - Yes (/usr/bin/jackd)
Running - No
!!Soundcards recognised by ALSA
!!-----
1 [U0x46d0x9a4 ]: USB-Audio - USB Device 0x46d:0x9a4
!!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/
!!-----
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,
enable : Y,Y,Y,Y,
id : (null),
ignore_ctl_error : N
index : -2,-1,-
pid : -1,-1,-
vid : -1,-1,-
!!USB Mixer information
!!-----
--startcollapse--
USB Mixer: usb_id=0x046d09a4, ctrlif=2, ctlerr=1
Card: USB Device 0x46d:0x9a4 at usb-0000:
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_
/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:
!!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:
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_
intel_powerclamp
coretemp
kvm_intel
kvm
irqbypass
crct10dif_pclmul
crc32_pclmul
ghash_clmulni_intel
cryptd
snd_hda_codec_hdmi
snd_hda_
snd_hda_
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~
[ 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_
[ 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_
[ 32.117865] snd_hda_
[ 32.117867] snd_hda_
[ 32.117868] snd_hda_
[ 32.117869] snd_hda_
[ 32.117872] snd_hda_
[ 32.117873] snd_hda_
[ 32.117875] snd_hda_
[ 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_
[ 32.129674] CPU: 0 PID: 399 Comm: modprobe Tainted: G OE 4.4.0-112-generic #135-Ubuntu
--
[ 32.130184] Call Trace:
[ 32.130202] [<ffffffffc0359
[ 32.130233] [<ffffffffc03df
[ 32.130265] [<ffffffffc03e0
[ 32.130304] [<ffffffffc0379
[ 32.130338] [<ffffffffc0374
[ 32.130370] [<ffffffff81565
--
[ 32.130536] [<ffffffff81566
[ 32.130561] [<ffffffffc0374
[ 32.130594] [<ffffffffc0457
[ 32.130624] [<ffffffff81002
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