[Acer Aspire XC-603] Audio stuttering

[Andrew Crome]

Since installing Ubuntu 18.10 on my system which previously had windows 10 I now get an intermittent stutter or hiccup for want of a better word. It happens in Firefox Quantum and Chrome/Chromium I have tried a number of fixes from you tube and various forums, but it still happens and I'm at my wits end as it is so random.

My system is a Acer Aspire XC-603

1tb HDD
4gb ram
Intel Celeron J1900 @ 1.99 GHz

The sound card is integrated on the mother board

HDA-Intell-HDA intel PCH this problem is so random i never know when its going to happen some times it does it one sometimes multiple times.

I'm totally at a loss

Can any one help ? I'm relatively new to this

I'm unable to locate the package version

I expected a clean audio output without any bugs and I'm getting hiccups and stuttering

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.18.0-15.16-generic 4.18.20
Uname: Linux 4.18.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: andrew 5045 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 23 16:10:25 2019
InstallationDate: Installed on 2019-02-22 (1 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
PackageArchitecture: all
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/16/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P11-B1
dmi.board.name: Aspire XC-603
dmi.board.vendor: Acer
dmi.chassis.type: 3
dmi.chassis.vendor: Acer
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP11-B1:bd06/16/2014:svnAcer:pnAspireXC-603:pvr:rvnAcer:rnAspireXC-603:rvr:cvnAcer:ct3:cvr:
dmi.product.family: Acer Desktop
dmi.product.name: Aspire XC-603
dmi.sys.vendor: Acer
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2019-02-23T12:07:26.743044

[Andrew Crome (acrome)]

As a side note I did not have this problem when using windows 10

This needs to be fixed some how

[Daniel van Vugt (vanvugt)]

It seems you have made some changes to the sound configuration, so can you please first try live booting:

  http://releases.ubuntu.com/18.10/

and 19.04:

  http://cdimages.ubuntu.com/daily-live/current/

then tell us if they have the same problem in a live session?

[Andrew Crome (acrome)]

Hi

all the suggestions that have been offered I have tried no changes were
made as far as I know, I tried other flavours  all do the same !

On 25/2/19 1:16 pm, Daniel van Vugt wrote:
> It seems you have made some changes to the sound configuration, so can
> you please first try live booting:
>
> http://releases.ubuntu.com/18.10/
>
> and 19.04:
>
> http://cdimages.ubuntu.com/daily-live/current/
>
> then tell us if they have the same problem in a live session?
>
> ** Also affects: pulseaudio (Ubuntu)
> Importance: Undecided
> Status: New
>
> ** Summary changed:
>
> - Audio stuttering
> + [Acer Aspire XC-603] Audio stuttering
>
> ** Changed in: alsa-driver (Ubuntu)
> Status: New => Incomplete
>
> ** Changed in: pulseaudio (Ubuntu)
> Status: New => Incomplete
>

[Daniel van Vugt (vanvugt)]

Your system has a modified config file here:

https://launchpadlibrarian.net/412444169/modified.conffile..etc.modprobe.d.alsa-base.conf.txt

--- /etc/modprobe.d/alsa-base.conf 2015-07-31 11:42:17.000000000 +0800
+++ Downloads/modified.conffile..etc.modprobe.d.alsa-base.conf.txt 2019-02-27 10:26:15.241596972 +0800
@@ -41,3 +41,4 @@
 options snd-pcsp index=-2
 # Keep snd-usb-audio from beeing loaded as first soundcard
 options snd-usb-audio index=-2
+options snd-hda-intel position_fix=2

but I don't know if that's relevant to this bug. In case it is then please try commenting out the line:

  options snd-hda-intel position_fix=2

by changing it to:

  #options snd-hda-intel position_fix=2

and reboot.

As for testing other flavours, that's not the same as testing other versions. Please follow the links in comment #3, boot each of the live sessions and tell us if they exhibit the same bug.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]