Public bug reported:
Following these instructions.
Hi all,
"Luke and I have just pushed a one-line change to 9.10's
/etc/modprobe.d/alsa-base.conf that enables HDA controllers to power
down their amps after ten idle seconds. This change anticipates the
larger power-savings objectives for 9.10.
We expect there will be regressions in the form of audible pops when
the AMPs power down (and/or up). If you experience this symptom in
9.10, please file a bug using "ubuntu-bug alsa-base". Be sure to
change the summary of the bug afterward to "[9.10 regression] HDA
power_save=10".
Thanks,
Dan"
ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0p: ubu 1673 F...m pulseaudio
/dev/snd/controlC0: ubu 1673 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 22'
Mixer name : 'Realtek ALC883'
Components : 'HDA:10573055,10573055,00100700
HDA:10ec0883,17341234,00100002'
Controls : 28
Simple ctrls : 17
Date: Tue Oct 27 14:24:40 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386
(20091020.3)
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
LANG=nl_NL.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic i686
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
[9.10 regression] HDA power_save=10
https://bugs.launchpad.net/bugs/461942
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