Hi There,

Thank you for quick response.
I just discovered that I can even record my voice with my headphone speaker
instead using a microphone because of a bug in Ubuntu 20.04.
Though I already know one can record audio with speaker only, but you can
do it in Ubuntu 20.04 surprised me.
When I plug my JBL T250SI headphone (without mic) and select Headphone to
Select as Audio Device. I am unable to hear any sound, later I discovered
that, in Sound Settings Built in Microphone is selected as Input device.
When I speak I also noticed change in the output. So I recorded a audio
clip which is attached below.
After recording audio I plugged out and plugged in again and select Headset
as Audio Device. And now I can hear every sound and even my own recording
but can't record anymore.
My system specs is already shared with you and there is no built in
microphone and speaker in it. I have also shared specs of my headphone so
that you can be sure there is no microphone in it.
Attachment Details :
1. Sound clip recorded with headphone speaker.
2. My headphone specs.
3. Sound Settings Window

I have every time plugged my headphone in the front audio jack.
*Attention: Play the recording at optimum volume as it has loud high pitch
sound.*

Thanks and Regards,
Anubahv Mishra

On Sun, Apr 26, 2020 at 9:11 AM Hui Wang <email address hidden> wrote:

> I guess after new install of ubuntu os, the default active input source
> should be "Headset Mic". If it is not, please tell me, this is worth to
> investigate.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1875032
>
> Title:
>   [Vostro 3470, Realtek ALC891, Black Headphone Out, Front] No sound at
>   all
>
> Status in alsa-driver package in Ubuntu:
>   New
>
> Bug description:
>   This problem only occurs when I plug my headphone and choose Headphone
> in option.
>   If I choose Headset, though plugging either headphone or headset, it
> works perfectly.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: alsa-base 1.0.25+dfsg-0ubuntu5
>   ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
>   Uname: Linux 5.4.0-26-generic x86_64
>   ApportVersion: 2.20.11-0ubuntu27
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  prm        1856 F.... pulseaudio
>   CasperMD5CheckResult: skip
>   CurrentDesktop: ubuntu:GNOME
>   Date: Sat Apr 25 20:05:01 2020
>   DistributionChannelDescriptor:
>    # This is a distribution channel descriptor
>    # For more information see
> http://wiki.ubuntu.com/DistributionChannelDescriptor
>    canonical-oem-somerville-xenial-amd64-osp1-20171027-1
>   InstallationDate: Installed on 2018-09-28 (575 days ago)
>   InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary
> 20171027-10:57
>   PackageArchitecture: all
>   SourcePackage: alsa-driver
>   Symptom: audio
>   Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
>   Symptom_Card: Built-in Audio - HDA Intel PCH
>   Symptom_DevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  prm        1856 F.... pulseaudio
>   Symptom_Jack: Black Headphone Out, Front
>   Symptom_Type: No sound at all
>   Title: [Vostro 3470, Realtek ALC891, Black Headphone Out, Front] No
> sound at all
>   UpgradeStatus: Upgraded to focal on 2020-04-24 (0 days ago)
>   dmi.bios.date: 05/29/2019
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: 2.13.0
>   dmi.board.name: 03NJH0
>   dmi.board.vendor: Dell Inc.
>   dmi.board.version: A01
>   dmi.chassis.type: 3
>   dmi.chassis.vendor: Dell Inc.
>   dmi.modalias:
> dmi:bvnDellInc.:bvr2.13.0:bd05/29/2019:svnDellInc.:pnVostro3470:pvr:rvnDellInc.:rn03NJH0:rvrA01:cvnDellInc.:ct3:cvr:
>   dmi.product.family: Vostro
>   dmi.product.name: Vostro 3470
>   dmi.product.sku: 0869
>   dmi.sys.vendor: Dell Inc.
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1875032/+subscriptions
>