Microphone produces Noice in Debian Buster

[karlchenotto]

I recently bought a HP Pavilion Desktiop TP01-1xxx Desktop PC and now I run it a a dual boot with debian buster and Win 10.

However, the microphone, connected via the backward or front jack plug, produces a lot of white noise. The noise get even worse when the microphone is off or deconnected. In windows this works just fine so I assume that it is the driver or the configuration. Setting default-samplerate in /etc/pulse/daemon.conf did not give any improvement (found the hint in some older posts in an Ubuntu forum).

In AlsaMixer the Chip of the corresponding device (HD-Audio Generic) is called Realtek ALC671
A second USB Microphone works just fine (HP Pro Webcakm C920) (but has a much worse sound quality than my Rode Microphone :-) )

Here, some info, that might be useful. If you want me to post anythin else, please give me a hint.

Code: Select all

cat /proc/asound/cards

gives:

0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xfc080000 irq 101
1 [Generic ]: HDA-Intel - HD-Audio Generic
HD-Audio Generic at 0xfc588000 irq 102
2 [Generic_1 ]: HDA-Intel - HD-Audio Generic
HD-Audio Generic at 0xfc580000 irq 103
3 [C920 ]: USB-Audio - HD Pro Webcam C920
HD Pro Webcam C920 at usb-0000:0d:00.3-2, high speed
4 [Loopback ]: Loopback - Loopback
Loopback 1

Code: Select all

arecord -l

gives:

**** Liste der Hardware-Geräte (CAPTURE) ****
Karte 2: Generic_1 [HD-Audio Generic], Gerät 0: ALC671 Analog [ALC671 Analog]
Sub-Geräte: 0/1
Sub-Gerät #0: subdevice #0
Karte 2: Generic_1 [HD-Audio Generic], Gerät 2: ALC671 Alt Analog [ALC671 Alt Analog]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 3: C920 [HD Pro Webcam C920], Gerät 0: USB Audio [USB Audio]
Sub-Geräte: 0/1
Sub-Gerät #0: subdevice #0
Karte 4: Loopback [Loopback], Gerät 0: Loopback PCM [Loopback PCM]
Sub-Geräte: 7/8
Sub-Gerät #0: subdevice #0
Sub-Gerät #1: subdevice #1
Sub-Gerät #2: subdevice #2
Sub-Gerät #3: subdevice #3
Sub-Gerät #4: subdevice #4
Sub-Gerät #5: subdevice #5
Sub-Gerät #6: subdevice #6
Sub-Gerät #7: subdevice #7
Karte 4: Loopback [Loopback], Gerät 1: Loopback PCM [Loopback PCM]
Sub-Geräte: 8/8
Sub-Gerät #0: subdevice #0
Sub-Gerät #1: subdevice #1
Sub-Gerät #2: subdevice #2
Sub-Gerät #3: subdevice #3
Sub-Gerät #4: subdevice #4
Sub-Gerät #5: subdevice #5
Sub-Gerät #6: subdevice #6
Sub-Gerät #7: subdevice #7

Code: Select all

lspci -nnk | grep -iA2 audio

01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:1aeb] (rev a1)
Subsystem: Hewlett-Packard Company Device [103c:87a5]
Kernel driver in use: snd_hda_intel
--
0d:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:1637]
Subsystem: Hewlett-Packard Company Device [103c:87d6]
Kernel driver in use: snd_hda_intel
--
0d:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller [1022:15e3]
Subsystem: Hewlett-Packard Company Family 17h (Models 10h-1fh) HD Audio Controller [103c:87d6]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel

Code: Select all

lsmod | grep "snd"

snd_usb_audio 262144 3
snd_usbmidi_lib 36864 1 snd_usb_audio
snd_rawmidi 40960 1 snd_usbmidi_lib
snd_seq_device 16384 1 snd_rawmidi
snd_hda_codec_realtek 122880 1
snd_hda_codec_generic 86016 1 snd_hda_codec_realtek
snd_hda_codec_hdmi 61440 2
snd_hda_intel 49152 14
snd_hda_codec 151552 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 94208 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 16384 2 snd_usb_audio,snd_hda_codec
snd_aloop 28672 7
snd_pcm 114688 12 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_aloop,snd_hda_core
snd_timer 36864 1 snd_pcm
snd 94208 55 snd_hda_codec_generic,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_aloop,snd_pcm,snd_rawmidi
soundcore 16384 1 snd
usbcore 299008 9 ftdi_sio,usbserial,xhci_hcd,snd_usb_audio,usbhid,snd_usbmidi_lib,uvcvideo,btusb,xhci_pci

I searched two days and did not find a solution, so I'd be very grateful for any idea.
Karlchenotto

[FreewheelinFrank]

Have you tried disabling loopback in alsamixer?

[karlchenotto]

Now I did :-)
Unfortunately setting Loopback output PCM=0 did not have any effect on the white noise in the microphone, there is no loopback input.

[karlchenotto]

UPDATE:

The problem goes on:
So cancel the echo/noise I followed this tutorial:
https://www.linuxuprising.com/2020/09/h ... ation.html

It worked, the noise is much less (not completely gone), however, a new problem occured. When I reduce the volume of input or output in pavucontrol or alsamixer, it will jump back to 100% every time I use the device.

My /etc/pulse/default.pa looks like this:

#!/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

### 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
.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

### Automatically move streams to the default sink if the sink they are
### connected to dies, similar for sources
load-module module-rescue-streams

### 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

### 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

#Echo Cancel (included 2021-05-22
#load-module module-echo-cancel
.ifexists module-echo-cancel.so
load-module module-echo-cancel source_master=alsa_input.pci-0000_0d_00.6.analog-stereo aec_method=webrtc source_name=echocancel sink_name=echocancel1
#load-module module-echo-cancel sink_master=alsa_output.pci-0000_0d_00.6.analog-stereo source_master=alsa_input.pci-0000_0d_00#.6.analog-stereo aec_method=webrtc source_name=echocancel sink_name=echocancel1
set-default-source echocancel
set-default-sink echocancel1
.endif


### Make some devices default
#set-default-sink output
#set-default-source input

[karlchenotto]

OK. This seems to solve the volume auto adjust:

https://askubuntu.com/questions/101532 ... 8#1069998

Still having the original problem (white noise). Anyone any idea where to look into?