Lenovo B50-70 inverted internal microphone

Bug #1524215 reported by Marian Lozanov on 2015-12-09
20
This bug affects 3 people
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
Medium
Unassigned

Bug Description

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1002978
Attached the alsa-info txt to this bug
---
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: marian 1981 F.... pulseaudio
 /dev/snd/pcmC1D0c: marian 1981 F...m pulseaudio
 /dev/snd/pcmC1D0p: marian 1981 F...m pulseaudio
 /dev/snd/controlC1: marian 1981 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.10
HibernationDevice: RESUME=UUID=10570c82-8e52-4379-9a8e-2e30baae9f63
InstallationDate: Installed on 2015-09-10 (90 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20384
Package: linux (not installed)
ProcFB:
 0 inteldrmfb
 1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic root=UUID=1791e4c1-12de-4fef-88b1-31716c981648 ro quiet splash
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-19-generic N/A
 linux-backports-modules-4.2.0-19-generic N/A
 linux-firmware 1.149.3
Tags: wily
Uname: Linux 4.2.0-19-generic x86_64
UpgradeStatus: Upgraded to wily on 2015-10-24 (45 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/21/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: 9DCN34WW(V3.04)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lenovo B50-70
dmi.board.vendor: LENOVO
dmi.board.version: 00000000NO DPK
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo B50-70
dmi.modalias: dmi:bvnLENOVO:bvr9DCN34WW(V3.04):bd07/21/2015:svnLENOVO:pn20384:pvrLenovoB50-70:rvnLENOVO:rnLenovoB50-70:rvr00000000NODPK:cvnLENOVO:ct10:cvrLenovoB50-70:
dmi.product.name: 20384
dmi.product.version: Lenovo B50-70
dmi.sys.vendor: LENOVO

Marian Lozanov (marianlozanov) wrote :

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1524215

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete

apport information

tags: added: apport-collected wily
description: updated

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Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Changed in linux (Ubuntu):
importance: Undecided → Medium
affects: linux (Ubuntu) → alsa-driver (Ubuntu)
Changed in alsa-driver (Ubuntu):
status: Confirmed → New
tags: added: latest-bios-3.04
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in alsa-driver (Ubuntu):
status: New → Confirmed
Michał Wadowski (wadosm) wrote :

I can confirm that bug still exists in Linux Kernel 5.1.0.

I created patch to fix this issue.

The attachment "fix_for_lenovo_b50-70_inverted_internal_microphone_bug.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

tags: added: patch
Hui Wang (hui.wang) wrote :

@Michat,

Could you send your patch to upstream maillist? <email address hidden>

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