Public bug reported:
After installing recent updates to sound libraries (see log below) sound is
distorted, sounds like over-steered, especially right channel (I use build-in
speakers with "stereo sound" option [BTW: I cannot get working sub-woofer]).
======================
Upgrade log:
Start-Date: 2018-02-26 07:52:58
Commandline: apt upgrade
Requested-By: xxxxx (1000)
Upgrade: libpulsedsp:amd64 (1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8),
grub-common:amd64 (2.02~beta2-36ubuntu3.16, 2.02~beta2-36ubuntu3.17),
pulseaudio:amd64 (1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8), python-apt-common:amd64
(1.1.0~beta1build1, 1.1.0~beta1ubuntu0.16.04.1), grub2-common:amd64
(2.02~beta2-36ubuntu3.16, 2.02~beta2-36ubuntu3.17), grub-pc:amd64
(2.02~beta2-36ubuntu3.16, 2.02~beta2-36ubuntu3.17), grub-pc-bin:amd64
(2.02~beta2-36ubuntu3.16, 2.02~beta2-36ubuntu3.17), ubuntu-drivers-common:amd64
(1:0.4.17.3, 1:0.4.17.6), python3-distupgrade:amd64 (1:16.04.23, 1:16.04.24),
libpulse0:amd64 (1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8), libpulse0:i386
(1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8), ubuntu-release-upgrader-core:amd64
(1:16.04.23, 1:16.04.24), libpulse-mainloop-glib0:amd64 (1:8.0-0ubuntu3.7,
1:8.0-0ubuntu3.8), pulseaudio-module-x11:amd64 (1:8.0-0ubuntu3.7,
1:8.0-0ubuntu3.8), ubuntu-release-upgrader-gtk:amd64 (1:16.04.23, 1:16.04.24),
pulseaudio-module-bluetooth:amd64 (1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8),
opera-stable:amd64 (51.0.2830.34, 51.0.2830.40), pulseaudio-utils:amd64
(1:8.0-0ubuntu3.7, 1:8.0-0ubuntu3.8), python3-apt:amd64 (1.1.0~beta1build1,
1.1.0~beta1ubuntu0.16.04.1), base-files:amd64 (9.4ubuntu4.5, 9.4ubuntu4.6)
End-Date: 2018-02-26 07:58:28
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: radek 2730 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Feb 26 08:19:21 2018
InstallationDate: Installed on 2017-11-10 (107 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Speaker, Internal
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [Aspire 6930G, Realtek ALC888, Speaker, Internal] Sound is distorted
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/14/2008
dmi.bios.vendor: Acer
dmi.bios.version: v0.3120
dmi.board.name: Makalu
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAcer:bvrv0.3120:bd08/14/2008:svnAcer,inc.:pnAspire6930G:pvrNotApplicable:rvnAcer,Inc.:rnMakalu:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: Aspire 6930G
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1751716
Title:
[Aspire 6930G, Realtek ALC888, Speaker, Internal] Sound is distorted
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