Have you ever chosen the "microphones" from the dialogue before? Please make sure the input source is not "headphone mic" before you choose the headphone.
Now your input source is "headphone mic": Simple mixer control 'Input Source',0 Capabilities: cenum Items: 'Headphone Mic' 'Rear Mic' 'Headset Mic' 'Line' Item0: 'Headphone Mic' -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. 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 -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
