to Raymond, yes, the combo jack works fine with common headphone. but I didn't know the answer about 2nd question in comment #17.
to David, I didn't know which kernel as well, but I will try to find the answer. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1509921 Title: [HDA-Intel - HD-Audio Generic, recording] No sound at all Status in HWE Next: New Status in alsa-driver package in Ubuntu: Confirmed Bug description: This is a desktop box, with following ports: front jack: a single headset combo jack rear jacks: mic, speaker, line-in An "Analog Input" consistently show up even there is nothing plugged, but I'm not able to record using headset via front combo jack or rear mic jack, they all recorded with noises. 00:01.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:9840] 00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller [1022:780d] (rev 02) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-66.108-generic 3.13.11-ckt27 Uname: Linux 3.13.0-66-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.14.1-0ubuntu3.16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: u 1824 F.... pulseaudio /dev/snd/controlC0: u 1824 F.... pulseaudio CurrentDesktop: Unity Date: Mon Oct 26 11:46:46 2015 InstallationDate: Installed on 2015-10-23 (2 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:Generic_1 failed Symptom_Card: Built-in Audio - HD-Audio Generic Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: u 1824 F.... pulseaudio /dev/snd/controlC0: u 1824 F.... pulseaudio Symptom_Type: No sound at all Title: [HDA-Intel - HD-Audio Generic, recording] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/21/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.0 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvr1.0.0:bd05/21/2015:svnDellInc.:pnInspiron3655:pvr1.0.0:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvrNotSpecified: dmi.product.name: Inspiron 3655 dmi.product.version: 1.0.0 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1509921/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp