Linux Internal Mic Is Not Working

Question

My internal mic is not working jack mic and usb mic all work fine.

When I try to use my internal mic I just hear static.

I have tried changing the volume to see that would help but all that does is reduce the static. If I talk really loud into the mic right up close I can hear myself along with super loud static and crackling.

I am using pulseaudio with ubuntu. I have been looking for days on a solution. I tried pulsewire and that did the same thing. I have tried disabling sleep on the audio board. It is a intel cpu.

It is a Dell chromebook 11 3180, with mrchromebox firmware and the camera works fine.

I have also tried changing my alsa config, no luck.

Pulseaudio config:

#!/usr/bin/pulseaudio -nF
#
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
This startup script is used only if PulseAudio is started per-user
(i.e. not in system mode)
.fail
Automatically restore the volume of streams and devices
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore
Automatically augment property information from .desktop files
stored in /usr/share/application
load-module module-augment-properties
Should be after module--restore but before module--detect
load-module module-switch-on-port-available
Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794)
.ifexists module-switch-on-connect.so
load-module module-switch-on-connect
.endif
Load audio drivers statically
(it's probably better to not load these drivers manually, but instead
use module-udev-detect -- see below -- for doing this automatically)
#load-module module-alsa-sink
#load-module module-alsa-source device=hw:1,0
#load-module module-oss device="/dev/dsp" sink_name=output source_name=input
#load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input
#load-module module-null-sink
#load-module module-pipe-sink
Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect tsched=0
.else
Use the static hardware detection module (for systems that lack udev support)
load-module module-detect
.endif
Automatically connect sink and source if JACK server is present
.ifexists module-jackdbus-detect.so
.nofail
load-module module-jackdbus-detect channels=2
.fail
.endif
Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif
.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif
Load several protocols
.ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
.endif
load-module module-native-protocol-unix
Network access (may be configured with paprefs, so leave this commented
here if you plan to use paprefs)
#load-module module-esound-protocol-tcp
#load-module module-native-protocol-tcp
#load-module module-zeroconf-publish
Load the RTP receiver module (also configured via paprefs, see above)
#load-module module-rtp-recv
Load the RTP sender module (also configured via paprefs, see above)
#load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"
#load-module module-rtp-send source=rtp.monitor
Load additional modules from GSettings. This can be configured with the paprefs tool.
Please keep in mind that the modules configured by paprefs might conflict with manually
loaded modules.
.ifexists module-gsettings.so
.nofail
load-module module-gsettings
.fail
.endif
Automatically restore the default sink/source when changed by the user
during runtime
NOTE: This should be loaded as early as possible so that subsequent modules
that look up the default sink/source get the right value
load-module module-default-device-restore
Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink
Honour intended role device property
load-module module-intended-roles
Automatically suspend sinks/sources that become idle for too long
#load-module module-suspend-on-idle
If autoexit on idle is enabled we want to make sure we only quit
when no local session needs us anymore.
.ifexists module-console-kit.so
load-module module-console-kit
.endif
.ifexists module-systemd-login.so
load-module module-systemd-login
.endif
Enable positioned event sounds
load-module module-position-event-sounds
Cork music/video streams when a phone stream is active
load-module module-role-cork
Block audio recording for snap confined packages unless they have
the "pulseaudio" or "audio-record" interfaces plugged.
.ifexists module-snap-policy.so
load-module module-snap-policy
.endif
Modules to allow autoloading of filters (such as echo cancellation)
on demand. module-filter-heuristics tries to determine what filters
make sense, and module-filter-apply does the heavy-lifting of
loading modules and rerouting streams.
load-module module-filter-heuristics
load-module module-filter-apply
Make some devices default
#set-default-sink output
#set-default-source input
Allow including a default.pa.d directory, which if present, can be used
for additional configuration snippets.
Note that those snippet files must have a .pa file extension, not .conf
.nofail
.include /etc/pulse/default.pa.d

This is alsa config:

# autoloader aliases
install sound-slot-0 /sbin/modprobe snd-card-0
install sound-slot-1 /sbin/modprobe snd-card-1
install sound-slot-2 /sbin/modprobe snd-card-2
install sound-slot-3 /sbin/modprobe snd-card-3
install sound-slot-4 /sbin/modprobe snd-card-4
install sound-slot-5 /sbin/modprobe snd-card-5
install sound-slot-6 /sbin/modprobe snd-card-6
install sound-slot-7 /sbin/modprobe snd-card-7
Cause optional modules to be loaded above generic modules
install snd /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-ioctl32 ; /sbin/modprobe --quiet --use-blacklist snd-seq ; }

Workaround at bug #499695 (reverted in Ubuntu see LP #319505)
install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-pcm-oss ; : ; }
install snd-mixer /sbin/modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-mixer-oss ; : ; }
install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; /sbin/modprobe --quiet --use-blacklist snd-seq-oss ; : ; }

install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; : ; }
Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-emu10k1-synth ; }
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq ; }
Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 /sbin/modprobe --ignore-install saa7134 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist saa7134-alsa ; : ; }
Prevent abnormal drivers from grabbing index 0
options bt87x index=-2
options cx88_alsa index=-2
options saa7134-alsa index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-usb-audio index=-2
options snd-usb-caiaq index=-2
options snd-usb-ua101 index=-2
options snd-usb-us122l index=-2
options snd-usb-usx2y index=-2
options snd-hda-intel model=dell-headset-multi
Ubuntu #62691, enable MPU for snd-cmipci
options snd-cmipci mpu_port=0x330 fm_port=0x388
Keep snd-pcsp from being loaded as first soundcard
options snd-pcsp index=-2
Keep snd-usb-audio from beeing loaded as first soundcard
options snd-usb-audio index=-2
options snd_sof sof_debug=1

OS Details:

           `.:/ossyyyysso/:.               alniles07@AllanChromebok 
        .:oyyyyyyyyyyyyyyyyyyo:`           ------------------------ 
      -oyyyyyyyodMMyyyyyyyysyyyyo-         OS: Ubuntu 22.04.2 LTS x86_64 
    -syyyyyyyyyydMMyoyyyydmMMyyyyys-       Host: Kefka 1.0 
   oyyysdMysyyyydMMMMMMMMMMMMMyyyyyyyo     Kernel: 5.15.0-67-generic 
 `oyyyydMMMMysyysoooooodMMMMyyyyyyyyyo`    Uptime: 1 hour, 7 mins 
 oyyyyyydMMMMyyyyyyyyyyyysdMMysssssyyyo    Packages: 2296 (dpkg) 
-yyyyyyyydMysyyyyyyyyyyyyyysdMMMMMysyyy-   Shell: fish 3.3.1 
oyyyysoodMyyyyyyyyyyyyyyyyyyydMMMMysyyyo   Resolution: 1366x768 
yyysdMMMMMyyyyyyyyyyyyyyyyyyysosyyyyyyyy   DE: Plasma 5.24.7 
yyysdMMMMMyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy   WM: KWin 
oyyyyysosdyyyyyyyyyyyyyyyyyyydMMMMysyyyo   Theme: [Plasma], Sweet-Dark-v40 [GTK2/3] 
-yyyyyyyydMysyyyyyyyyyyyyyysdMMMMMysyyy-   Icons: BeautyLine [Plasma], BeautyLine [GTK2/3] 
 oyyyyyydMMMysyyyyyyyyyyysdMMyoyyyoyyyo    Terminal: yakuake 
 `oyyyydMMMysyyyoooooodMMMMyoyyyyyyyyo     CPU: Intel Celeron N3060 (2) @ 2.480GHz 
   oyyysyyoyyyysdMMMMMMMMMMMyyyyyyyyo      GPU: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx 
    -syyyyyyyyydMMMysyyydMMMysyyyys-       Memory: 2243MiB / 3869MiB 
      -oyyyyyyydMMyyyyyyysosyyyyo-
        ./oyyyyyyyyyyyyyyyyyyo/.                                   
           `.:/oosyyyysso/:.`
╭─alniles07@AllanChromebok in ~ 
 ╰─$

Let me know if you need a log or something.

Does the laptop actually have an internal mic? My chromebook (Acer C731) does not have an internal mic, but Ubuntu shows a dummy device, which only produces a static noise. However, headphone jack does work. — Archisman Panigrahi, Mar 21 '23 at 05:51
It does because I an hear I through the static if I talk right into it. And it worked fine in chrome os back when I used it. — allancoding, Mar 21 '23 at 15:09

Linux Internal Mic Is Not Working

This startup script is used only if PulseAudio is started per-user

(i.e. not in system mode)

Automatically restore the volume of streams and devices

Automatically augment property information from .desktop files

stored in /usr/share/application

Should be after module--restore but before module--detect

Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794)

Load audio drivers statically

(it's probably better to not load these drivers manually, but instead

use module-udev-detect -- see below -- for doing this automatically)

Automatically load driver modules depending on the hardware available

Use the static hardware detection module (for systems that lack udev support)

Automatically connect sink and source if JACK server is present

Automatically load driver modules for Bluetooth hardware

Load several protocols

Network access (may be configured with paprefs, so leave this commented

here if you plan to use paprefs)

Load the RTP receiver module (also configured via paprefs, see above)

Load the RTP sender module (also configured via paprefs, see above)

Load additional modules from GSettings. This can be configured with the paprefs tool.

Please keep in mind that the modules configured by paprefs might conflict with manually

loaded modules.

Automatically restore the default sink/source when changed by the user

during runtime

NOTE: This should be loaded as early as possible so that subsequent modules

that look up the default sink/source get the right value

Make sure we always have a sink around, even if it is a null sink.

Honour intended role device property

Automatically suspend sinks/sources that become idle for too long

If autoexit on idle is enabled we want to make sure we only quit

when no local session needs us anymore.

Enable positioned event sounds

Cork music/video streams when a phone stream is active

Block audio recording for snap confined packages unless they have

the "pulseaudio" or "audio-record" interfaces plugged.

Modules to allow autoloading of filters (such as echo cancellation)

on demand. module-filter-heuristics tries to determine what filters

make sense, and module-filter-apply does the heavy-lifting of

loading modules and rerouting streams.

Make some devices default

Allow including a default.pa.d directory, which if present, can be used

for additional configuration snippets.

Note that those snippet files must have a .pa file extension, not .conf

Cause optional modules to be loaded above generic modules

Workaround at bug #499695 (reverted in Ubuntu see LP #319505)

Cause optional modules to be loaded above sound card driver modules

Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)

Prevent abnormal drivers from grabbing index 0

Ubuntu #62691, enable MPU for snd-cmipci

Keep snd-pcsp from being loaded as first soundcard

Keep snd-usb-audio from beeing loaded as first soundcard

0 Answers0