Crackling sound internal mic on Lenovo ideapad 130-15IKB

Hello All,

This is my first post here. I am unable to get my Internal mic on my laptop to work without a crackling sound. I have tried various options but none works. My INXI config below

inxi -SMA  :heavy_check_mark:
Host: manjaro Kernel: 5.4.89-1-MANJARO x86_64 bits: 64
Desktop: GNOME 3.38.3 Distro: Manjaro Linux
Type: Laptop System: LENOVO product: 81H7 v: Lenovo ideapad 130-15IKB
Mobo: LENOVO model: LNVNB161216 v: SDK0Q55724 WIN
serial: UEFI: LENOVO v: 8QCN26WW(V1.14)
date: 12/29/2020
Device-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel
Sound Server: ALSA v: k5.4.89-1-MANJARO

I have tried some steps in this link also but no use.

/etc/pulse/ config below

#!/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


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

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

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

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

load-module module-udev-detect use_ucm=0 tsched=0

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

load-module module-detect

Automatically connect sink and source if JACK server is present

load-module module-jackdbus-detect channels=2

Automatically load driver modules for Bluetooth hardware

load-module module-bluetooth-policy

load-module module-bluetooth-discover

Load several protocols

load-module module-dbus-protocol
load-module module-esound-protocol-unix
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.

load-module module-gsettings

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.

load-module module-console-kit
load-module module-systemd-login

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

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
load-module module-echo-cancel source name=noiseless

Make some devices default

#set-default-sink output
#set-default-source input
set-default-source noiseless

Enable Echo/Noise-Cancellation

load-module module-echo-cancel use_master_format=1 aec_method=webrtc aec_args=“analog_gain_control=0\ digital_gain_control=1” source_name=echoCancel_source sink_name=echoCancel_sink
set-default-source echoCancel_source
set-default-sink echoCancel_sink

Hi, I had a similar issue. If it can be of any help, here Microphone and bluetooth headset: two problems and one solution (for now) I describe shortly my solution, even though it could be improved

Thanks will try the solution and see. BTW I stopped following this post as there were no replies for sometime.

Yes, I see… Actually I wrote my post before checking if there were other people in this forum with the same problem, later I did a quick search to see if that was the case and I tried to help :slight_smile: What I hope is that someone helps me perfecting my solution :rofl: but of course you can try something similar and see if it helps