popping sound at 10s intervals when on battery power

Bug #1026548 reported by Reiner on 2012-07-19
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
Undecided
Unassigned

Bug Description

This appears to be an old bug in kernel module snd_hda_intel (see /usr/share/doc/alsa-base/driver/powersave.txt and http://forums.opensuse.org/english/get-technical-help-here/hardware/388736-strange-pop-click-sound-speakers-every-time.html). Strangely however, I only observed this after upgrading to Precise AND installation of a new battery in my T61p Thinkpad. In any case, turning off Intel audio power saving works around the problem:
In /usr/lib/pm-utils/power.d/intel-audio-powersave
change the line
INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
to
INTEL_AUDIO_POWERSAVE=false

I am only filing this bug report since finding the workaround for specifically Precise (and other recent Ubuntu distros) required a bit of time (to put 2 and 2 together). Hope others won't have to spend the time now.

Launchpad Janitor (janitor) wrote :

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

Changed in alsa-driver (Ubuntu):
status: New → Confirmed
Zdenko Janov (zdendo) wrote :

I have same problem - but I have NO SOUND if my HP ProBook 4510s is on the batteries. This was fix problem, THANK YOU Reiner ;-)

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