Wang:
I've never had to use it since I bought it, so I don't know if it could
work from the start. It is only because of Covid-19 and having to use Zoom
and Skype for our group activities that the necessity has come up.
I think it is s software problem, not hardware because on Settings > Sound
> Input I can unmute (On) the mic and see the sound bars showing the level.
The Sound Recorder app also records clips and plays them back. I cannot get
the sound input settings to work in Skype and Zoom. on that, although the
level meters work, Skype test calls and Zoom recipients can't hear me.
There are two issues:
1. The Ubuntu Settings > Sound > Input settings do not reflect the actual
state of the sound input, and even if the mic is unmuted (On), this setting
is lost on shut down or sleep regardless of what the mic setting is.
2. Apps cannot access the mic input when it is active.
My attempts to load the snd_cs46xx kernel module and to add the
below options to the end of alsa-base.conf were 'solutions' found on the
internet:
options snd-hda-intel model=dell-vostro-2520
options snd-hda-intel dmic_detect=0
The Cirrus Logic CS4213 codec is used in a number of older Dell models.
Hope this helps,
Hedley
On Sun, 3 May 2020 at 18:35, Hui Wang <[email protected]> wrote:
> Did the internal mic work before?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1876555
>
> Title:
> Apps cannot retrieve internal mic input
>
> Status in alsa-driver package in Ubuntu:
> New
>
> Bug description:
> Could be pulseaudio, alsa-driver, or
> ~$ /usr/bin/gnome-control-center sound input
>
> Dell Vostro 2520 dual-boot laptop
> Intel Corporation 7 Series/C216 Chipset Family High Definition Audio
> Controller (rev 04)
> 2- Cirrus Logic High Definition Audio, model CS4213
> Ubuntu 18.04.4 LTS
> Windows 10 Home, v. 1903, bld 18362.778
> Skype 8.59 (Ubu & Win)
> Zoom (cloud meetings) 5.0.3x (Ubu), 5.0.1x (Win)
> pulseaudio 1:11.1-1ubuntu7.5
> alsa-driver -- package could not be found:
> ~$ apt-cache policy alsa-driver
> N: Unable to locate package alsa-driver
>
> Does this help? /lib/modules/5.3.0-51-generic/kernel/sound/drivers
>
>
> In Settings > Sound > Input, the On/Off [unmute/mute] setting
> *appearance* is preserved over reboots and awakenings from sleep, but the
> mic input sound is always muted despite the control still being set to On
> (unmute). Clicking mute (Off), then unmute (On) restores mic input, as
> shown by the level meter tracking input sounds.
>
> However, Skype 8.59x and Zoom 5.0.3x cannot receive sound inputs
> *despite* their sound level meters (in their respective sound
> settings) registering changing input levels. The Skype test call does
> not work. I opened a Zoom meeting with my wife on her Win 10 computer.
> I could see and hear her, and she could see but not hear me.
>
> On this dual-boot laptop, Skype 8.59x fails the test call under
> Windows 10 Home.
>
> The Sound Recorder app can successfully record mic input and play it
> back. pavucontrol shows input on its level meter.
>
> Notes:
>
> + ~$ /usr/bin/gnome-control-center sound input
> (gnome-control-center:17284): sound-cc-panel-WARNING **:
> 16:48:28.795: Couldn't find a stream
> from the active input
>
> + Many days searching the internet and AskUbuntu have not produced a
> solution that works. (For
> what it is worth, many posters have reported that sound became
> dysfunctional after upgrading
> to 18.04 or 18.04.4.)
>
> + I have added the snd-cs46xx kernel module and firmware to get around
> driver licensing issues
> following the instructions at https://wiki.debian.org/snd-cs46xx,
> Debian 8.
>
> + I have added these lines to /etc/modprobe.d/alsa-base.conf :
>
> options snd-hda-intel model=dell-vostro-2520
> options snd-hda-intel dmic_detect=0
>
> + In PulseAudio Volume Control I have set the following:
>
> Input Devices Port: Internal Microphone
> Output Devices Port: Speakers
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: alsa-base 1.0.25+dfsg-0ubuntu5
> ProcVersionSignature: Ubuntu 5.3.0-51.44~18.04.2-generic 5.3.18
> Uname: Linux 5.3.0-51-generic x86_64
> NonfreeKernelModules: wl
> ApportVersion: 2.20.9-0ubuntu7.14
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: hfinger 4047 F.... pulseaudio
> /dev/snd/pcmC0D0c: hfinger 4047 F...m pulseaudio
> /dev/snd/pcmC0D0p: hfinger 4047 F...m pulseaudio
> CurrentDesktop: ubuntu:GNOME
> Date: Sun May 3 16:52:35 2020
> InstallationDate: Installed on 2020-04-15 (17 days ago)
> InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64
> (20200203.1)
> PackageArchitecture: all
> SourcePackage: alsa-driver
> Symptom: audio
> Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed
> Symptom_Card: Built-in Audio - HDA Intel PCH
> Symptom_Jack: Mic, Internal
> Symptom_Type: None of the above
> Title: [Vostro 2520, Cirrus Logic CS4213, Mic, Internal] Recording
> problem
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 01/25/2013
> dmi.bios.vendor: Dell Inc.
> dmi.bios.version: A05
> dmi.board.name: 0FWKV7
> dmi.board.vendor: Dell Inc.
> dmi.board.version: A05
> dmi.chassis.type: 8
> dmi.chassis.vendor: Dell Inc.
> dmi.chassis.version: Not Specified
> dmi.modalias:
> dmi:bvnDellInc.:bvrA05:bd01/25/2013:svnDellInc.:pnVostro2520:pvrNotSpecified:rvnDellInc.:rn0FWKV7:rvrA05:cvnDellInc.:ct8:cvrNotSpecified:
> dmi.product.name: Vostro 2520
> dmi.product.sku: To be filled by O.E.M.
> dmi.product.version: Not Specified
> dmi.sys.vendor: Dell Inc.
> mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-05-01T13:58:36.978996
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1876555/+subscriptions
>
--
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Telephone 03 9836 4635
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https://bugs.launchpad.net/bugs/1876555
Title:
Apps cannot retrieve internal mic input
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