The following scenarios were tested. this issue could be reproduced. Please note for case [4] and [5] was tested with updated BIOS (GIET53WW → GIET78WW) (I hasn't accessed the same BIOS revision yet)
kernel/HDA DKMS/bios - result, also info attachment [1] 3.13.0-46, HDA DKMS (0.201502151246~ubuntu14.04.1), GIET53WW (2.01) - could reproduce this bug (recorded noise), [2] 3.13.0-46, HDA DKMS (0.201503201631~ubuntu14.04.1), GIET53WW (2.01) - could not enable the audio (shown as Dummy), 201307-14019_150324-02.log [3] 3.13.0-46, without HDA DKMS, GIET53WW (2.01), GIET53WW (2.01) - could reproduce this bug (recorded noise), 201307-14019_150324-03.log [4] 3.13.0-46, HDA DKMS (0.201503201631~ubuntu14.04.1), GIET78WW 2.28 - could not enable the audio (shown as Dummy), 201307-14019_150324-04.log [5] 3.13.0-46, without HDA DKMS, GIET53WW (2.01), GIET78WW 2.28 - could reproduce this bug (recorded noise), 201307-14019_150324-05.log in case [4] and [5], I could not access dump_coef because no such path /sys/module/snd_hda_codec/parameters/dump_coef (I didn't try to access dump_coef in case [1] [2] [3] so I could not tell whether they are the same.) I will test with a clean 14.04.1 installation with this updated bios (GIET78WW 2.28) again to avoid mutiple package/dkms installation/purging to cause a dirty environment and make sure the test quality. I will also attach alsa-info log with dump_coef on if possible. -- 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/1414706 Title: [20ALCTO1WW, Realtek ALC292, Black Mic, Left][Lenovo ThinkPad X240] external mic has no sound at all Status in HWE Next Project: Incomplete Status in alsa-driver package in Ubuntu: Confirmed Bug description: During this test, an error dialog was thrown, reading: The following mixer control(s) might be incorrectly set: Mic is at 0.0% Mic is muted Please try to fix that (e g by running "alsamixer -D hw:PCH" in a terminal) and see if that solves the problem. Would you like to continue troubleshooting anyway? However, the System Settings... -> Sound UI shows the mic as not muted. When I tried running the alsamixer command, I saw mic and mic- boost were both showing 0; I cranked them up to 100, but it made no difference. I also tried re-running this command with the mic/mic- boost still set to 100 and it threw the same error. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13 Uname: Linux 3.13.0-45-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: doctorow 2636 F.... pulseaudio /dev/snd/pcmC1D0c: doctorow 2636 F...m pulseaudio /dev/snd/pcmC1D0p: doctorow 2636 F...m pulseaudio /dev/snd/controlC0: doctorow 2636 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jan 26 16:20:49 2015 InstallationDate: Installed on 2014-09-10 (138 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:PCH failed Symptom_AlsaRecordingTestStderr: a r e c o r d : p c m _ r e a d : 2 0 3 1 : r e a d e r r o r : I n p u t / o u t p u t e r r o r Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: doctorow 2636 F.... pulseaudio /dev/snd/pcmC1D0c: doctorow 2636 F...m pulseaudio /dev/snd/pcmC1D0p: doctorow 2636 F...m pulseaudio /dev/snd/controlC0: doctorow 2636 F.... pulseaudio Symptom_Jack: Black Mic, Left Symptom_Type: No sound at all Title: [20ALCTO1WW, Realtek ALC292, Black Mic, Left] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/24/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GIET75WW (2.25 ) dmi.board.asset.tag: Not Available dmi.board.name: 20ALCTO1WW dmi.board.vendor: LENOVO dmi.board.version: 0B98401 PRO dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGIET75WW(2.25):bd06/24/2014:svnLENOVO:pn20ALCTO1WW:pvrThinkPadX240:rvnLENOVO:rn20ALCTO1WW:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20ALCTO1WW dmi.product.version: ThinkPad X240 dmi.sys.vendor: LENOVO mtime.conffile..etc.modprobe.d.alsa.base.conf: 2015-01-22T13:36:22.741441 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1414706/+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