[SOLVED] Microphone partially working in CentOS 8.3.2011

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colinabrett
Posts: 33
Joined: 2012/01/31 10:05:24
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[SOLVED] Microphone partially working in CentOS 8.3.2011

Post by colinabrett » 2021/04/30 18:02:26

I have recently installed 8.3 onto a Kuu laptop. This is a cheapish Chinese product originally installed with Windows 10. But it's got 8Gb RAM and 256GB SSD, so it's really quite whizzy compared to my older hardware.

Installation and initial updates went fine. I installed KDE without issue. However, when I tried a Zoom call earlier today, the Zoom client couldn't pick up the microphone and the call was silent from my end (the speakers were working and I could hear my colleague quite clearly).

I've been following this thread, viewtopic.php?f=55&t=74980 , and have tried to glean as much info as possible before posting this request. I hope this is relevant.

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[root@kuu ~]# lsmod | grep -E "snd|audio"
snd_seq_dummy          16384  0
snd_soc_skl_hda_dsp    24576  13
snd_hda_codec_hdmi     69632  1
snd_soc_hdac_hdmi      32768  1 snd_soc_skl_hda_dsp
snd_hda_codec_realtek   122880  1
snd_hda_codec_generic    86016  1 snd_hda_codec_realtek
snd_soc_dmic           16384  1
snd_sof_pci            20480  0
snd_sof_intel_byt      16384  1 snd_sof_pci
snd_sof_intel_ipc      16384  1 snd_sof_intel_byt
snd_sof_intel_hda_common    81920  1 snd_sof_pci
snd_soc_hdac_hda       20480  1 snd_sof_intel_hda_common
snd_sof_xtensa_dsp     16384  2 snd_sof_intel_hda_common,snd_sof_intel_byt
snd_sof_intel_hda      16384  1 snd_sof_intel_hda_common
snd_sof               118784  4 snd_sof_pci,snd_sof_intel_hda_common,snd_sof_intel_byt,snd_sof_intel_ipc
ledtrig_audio          16384  3 snd_hda_codec_generic,snd_hda_codec_realtek,snd_sof
snd_soc_skl           172032  0
snd_soc_sst_ipc        16384  1 snd_soc_skl
snd_soc_sst_dsp        36864  1 snd_soc_skl
snd_hda_ext_core       28672  5 snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_skl,snd_sof_intel_hda
snd_soc_acpi_intel_match    40960  3 snd_sof_pci,snd_sof_intel_hda_common,snd_soc_skl
snd_soc_acpi           16384  4 snd_soc_acpi_intel_match,snd_sof_intel_hda_common,snd_sof_intel_byt,snd_soc_skl
snd_soc_core          262144  7 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_skl,snd_soc_dmic,snd_soc_skl_hda_dsp
snd_compress           24576  1 snd_soc_core
snd_hda_intel          49152  0
snd_intel_dspcfg       24576  4 snd_hda_intel,snd_sof_pci,snd_sof_intel_hda_common,snd_soc_skl
snd_hda_codec         151552  6 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_soc_skl_hda_dsp
snd_hda_core           98304  12 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_skl,snd_sof_intel_hda,snd_soc_skl_hda_dsp
snd_hwdep              16384  1 snd_hda_codec
snd_seq                81920  1 snd_seq_dummy
snd_seq_device         16384  1 snd_seq
snd_pcm               118784  10 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_compress,snd_soc_core,snd_soc_skl,snd_hda_core
snd_timer              40960  2 snd_seq,snd_pcm
snd                    94208  39 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_soc_skl_hda_dsp
soundcore              16384  1 snd
[root@kuu ~]# 

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[root@kuu ~]# arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: sofhdadsp [sof-hda-dsp], device 0: HDA Analog (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 1: HDA Digital (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 6: DMIC (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 7: DMIC16kHz (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
[root@kuu ~]# 

[root@kuu ~]# arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=sofhdadsp
    sof-hda-dsp, 
    Default Audio Device
[root@kuu ~]# 

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[root@kuu ~]# aplay --list-devices
**** List of PLAYBACK Hardware Devices ****
card 0: sofhdadsp [sof-hda-dsp], device 0: HDA Analog (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 1: HDA Digital (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 3: HDMI1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 4: HDMI2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 5: HDMI3 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
[root@kuu ~]# 

[root@kuu ~]# aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=sofhdadsp
    sof-hda-dsp, 
    Default Audio Device
[root@kuu ~]# 

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[root@kuu ~]# dnf list installed | grep -E 'audio|alsa'
alsa-lib.x86_64                                          1.2.3.2-1.el8                                 @AppStream             
alsa-plugins-pulseaudio.x86_64                           1.1.9-1.el8                                   @AppStream             
alsa-sof-firmware.noarch                                 1.5-2.el8                                     @anaconda              
alsa-ucm.noarch                                          1.2.3.2-1.el8                                 @AppStream             
alsa-utils.x86_64                                        1.2.3-1.el8                                   @AppStream             
jack-audio-connection-kit.x86_64                         1.9.14-4.el8                                  @epel                  
kde-settings-pulseaudio.noarch                           32.0-3.el8                                    @epel                  
pcaudiolib.x86_64                                        1.1-2.el8                                     @AppStream             
portaudio.x86_64                                         19-30.el8                                     @epel                  
pulseaudio.x86_64                                        13.99.1-1.el8                                 @AppStream             
pulseaudio-libs.x86_64                                   13.99.1-1.el8                                 @AppStream             
pulseaudio-libs-glib2.x86_64                             13.99.1-1.el8                                 @AppStream             
pulseaudio-module-bluetooth.x86_64                       13.99.1-1.el8                                 @AppStream             
pulseaudio-module-x11.x86_64                             13.99.1-1.el8                                 @AppStream             
pulseaudio-utils.x86_64                                  13.99.1-1.el8                                 @AppStream             
webrtc-audio-processing.x86_64                           0.3-9.el8                                     @AppStream             
[root@kuu ~]# 

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[root@kuu ~]# lspci -vv | grep -i audio
00:1f.3 Audio device: Intel Corporation Comet Lake PCH-LP cAVS (prog-if 80)
        Kernel driver in use: sof-audio-pci
[root@kuu ~]#

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[root@kuu ~]# tree /proc/asound -L 2
/proc/asound
├── card0
│   ├── codec#0
│   ├── codec#2
│   ├── eld#2.0
│   ├── eld#2.1
│   ├── eld#2.2
│   ├── eld#2.3
│   ├── eld#2.4
│   ├── eld#2.5
│   ├── eld#2.6
│   ├── eld#2.7
│   ├── eld#2.8
│   ├── id
│   ├── pcm0c
│   ├── pcm0p
│   ├── pcm1c
│   ├── pcm1p
│   ├── pcm3p
│   ├── pcm4p
│   ├── pcm5p
│   ├── pcm6c
│   └── pcm7c
├── cards
├── devices
├── hwdep
├── modules
├── oss
│   ├── devices
│   └── sndstat
├── pcm
├── seq
│   ├── clients
│   ├── drivers
│   ├── queues
│   └── timer
├── sofhdadsp -> card0
├── timers
└── version

13 directories, 25 files
[root@kuu ~]# 

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[root@kuu ~]# lshw -class multimedia
  *-usb:1                   
       description: Video
       product: USB 2.0 Camera: USB 2.0 Camera
       vendor: Alcor Micro, Corp.
       physical id: 4
       bus info: usb@1:4
       logical name: input10
       logical name: /dev/input/event10
       version: 0.03
       capabilities: usb-2.00 usb
       configuration: driver=uvcvideo maxpower=200mA speed=480Mbit/s
  *-multimedia
       description: Audio device
       product: Comet Lake PCH-LP cAVS
       vendor: Intel Corporation
       physical id: 1f.3
       bus info: pci@0000:00:1f.3
       logical name: card0
       logical name: /dev/snd/controlC0
       logical name: /dev/snd/hwC0D0
       logical name: /dev/snd/hwC0D2
       logical name: /dev/snd/pcmC0D0c
       logical name: /dev/snd/pcmC0D0p
       logical name: /dev/snd/pcmC0D1c
       logical name: /dev/snd/pcmC0D1p
       logical name: /dev/snd/pcmC0D3p
       logical name: /dev/snd/pcmC0D4p
       logical name: /dev/snd/pcmC0D5p
       logical name: /dev/snd/pcmC0D6c
       logical name: /dev/snd/pcmC0D7c
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list
       configuration: driver=sof-audio-pci latency=32
       resources: irq:130 memory:b1110000-b1113fff memory:b1000000-b10fffff
[root@kuu ~]# 

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[root@kuu ~]# lspci | grep audio
[root@kuu ~]# 

[b]Interesting. No results listed. But as a guess copied from the above thread:[/b]

[root@kuu ~]# lspci -s 00:1f.3 -v
00:1f.3 Audio device: Intel Corporation Comet Lake PCH-LP cAVS (prog-if 80)
        DeviceName: Onboard - Sound
        Subsystem: Realtek Semiconductor Co., Ltd. Device 119e
        Flags: bus master, fast devsel, latency 32, IRQ 130
        Memory at b1110000 (64-bit, non-prefetchable) [size=16K]
        Memory at b1000000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: [50] Power Management version 3
        Capabilities: [80] Vendor Specific Information: Len=14 <?>
        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Kernel driver in use: sof-audio-pci
        Kernel modules: snd_hda_intel, snd_soc_skl, snd_sof_pci

[root@kuu ~]# 
Try this:

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[root@kuu ~]# arecord -f S16_LE -c 2 -d 5 -r 44100 --device="hw:0,0" /tmp/test1.wav
Recording WAVE '/tmp/test1.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Warning: rate is not accurate (requested = 44100Hz, got = 48000Hz)
         please, try the plug plugin 
[root@kuu ~]# 

[b]/tmp/test1.wav has been created:
[/b]
[root@kuu ~]# ls -l /tmp/test1.wav
-rw-r--r--. 1 root root 882044 Apr 30 17:46 /tmp/test1.wav
[root@kuu ~]# 
Playback test1.wav

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[root@kuu ~]# aplay --device="hw:0,0" /tmp/test1.wav
Playing WAVE '/tmp/test1.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
[root@kuu ~]# 
Worked!

And

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[root@kuu ~]# arecord -f S16_LE -c 2 -d 5 -r 44100 --device="hw:0,1" /tmp/test2.wav
arecord: main:830: audio open error: Invalid argument
[root@kuu ~]# 
/var/log/messages shows

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Apr 30 17:47:21 kuu kernel: snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
Apr 30 17:47:21 kuu kernel: snd_hda_codec_realtek ehdaudio0D0: ASoC: can't open DAI Digital Codec DAI: -22
Apr 30 17:47:21 kuu kernel: snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
Apr 30 17:47:21 kuu kernel: Digital Playback and Capture: ASoC: BE open failed -22
Apr 30 17:47:21 kuu kernel: HDA Digital: ASoC: failed to start some BEs -22
In other tests, Zoom and Audacity still can't detect the microphone.

So I'm at a bit of a loss. I had thought something as simple as a microphone would be a no-brainer but obviously there's something missing. I have a sneaking suspicion that I'm missing something obvious but I can't put my finger on it.

Any suggestions or comments would be very useful.

Regards,
Colin
Last edited by colinabrett on 2021/05/15 15:15:25, edited 1 time in total.

colinabrett
Posts: 33
Joined: 2012/01/31 10:05:24
Contact:

Re: Microphone partially working in CentOS 8.3.2011

Post by colinabrett » 2021/05/15 15:14:56

This is now fixed. After a few attempts, I installed pavucontrol and this allowed me to see the active devices as:

Speaker: sof-hda-dsp Speaker + Headphones
Mic: sof-hda-dsp Headphones Stereo Microphone

Further testing with Zoom led to the microphone volume settings and I whacked it up to 100% and it seemed to work.

It's probably a noob-level error, for which I am ashamed, but I'm still grateful to all those who read the post. Thanks.

Colin

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