@Hui Wang My problem is different from the comment you provided, LOL. 1. I'm using Kubuntu. Kubuntu DOESN'T HAVE the POPUP-DIALOG because KDE environment uses PulseAudio to manage audio system. When a user plug in a headset there are no options to choose from, the program sets it automatically. It's the same problem in Xfce4 of Xubuntu. 2. Before I plug in, the capture is the internal one. But when I do, the settings automatically changes to 'Microphone' or 'Headset Microphone', in both situation my headset is unable to work.(KDE envionment, all these settings are accessible in PulseAudio) Only after I've change the setting to 'Internal Microphone' manually could I hear the voice. 3. I installed Ubuntu Desktop and tested the problem in the environment. The POPUP-DIALOG shows with the 3 options when I plug in headset. 'Microphone' option can make my headset work. 'Headset' option makes the same problem as KDE&Xfce4 one. 4. Does the Dell laptop you got have the 2 x 3.5mm Headset Jack or the 1 x 3.5mm Headset Jack which is same as my laptop? Or there is something different in the circuit design or audio device firmware settings that makes the differences appear.
Anyway, thank you for your help. Without it I can't dig in the problem and find something. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1873384 Title: [Dell Inspiron 5577] Headphone has no sound out Status in linux package in Ubuntu: Confirmed Status in pulseaudio package in Ubuntu: Confirmed Bug description: Computer: Dell inspiron 15 5577 Gaming intel i5 7300HQ version System: Kubuntu 20.04 Bug: Plug-in headphone has no sound out, meanwhile computer's speaker is okay when unplugged the headphone. Additional information: Headphone is okay when kubuntu 18.04.3 is installed on the computer. Alsamixer is checked and headphone are not mute. Headphone plugin state can be correctly detected, and speaker can automatically mute until headphone unplugged. External usb soundcard is usable with headphone. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubiquity 20.04.12 ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30 Uname: Linux 5.4.0-24-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip Date: Fri Apr 17 11:14:43 2020 InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash nomodeset --- InstallationDate: Installed on 2020-04-16 (0 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200416) ProcEnviron: LANGUAGE=zh_CN:zh TERM=xterm-256color PATH=(custom, no user) LANG=zh_CN.UTF-8 SHELL=/bin/bash SourcePackage: ubiquity Symptom: installer UpgradeStatus: No upgrade log present (probably fresh install) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sherlockholmes 1242 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: KDE DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-04-16 (0 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200416) MachineType: Dell Inc. Inspiron 5577 NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-24-generic root=UUID=18303cc3-5e85-4677-8bca-60324bae9608 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30 RelatedPackageVersions: linux-restricted-modules-5.4.0-24-generic N/A linux-backports-modules-5.4.0-24-generic N/A linux-firmware 1.187 Tags: focal Uname: Linux 5.4.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/02/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.3 dmi.board.name: 090HMC dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvr1.1.3:bd12/02/2018:svnDellInc.:pnInspiron5577:pvr1.1.3:rvnDellInc.:rn090HMC:rvrA00:cvnDellInc.:ct10:cvrNotSpecified: dmi.product.family: Inspiron dmi.product.name: Inspiron 5577 dmi.product.sku: 07E1 dmi.product.version: 1.1.3 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873384/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp