[Pkg-pulseaudio-devel] Bug#485757: pulseaudio: module-suspend-on-idle is disabled, which prevents CPU from going idle

[Gabriel Kerneis]

Package: pulseaudio
Version: 0.9.10-2
Severity: wishlist
Tags: patch

Hi,

as reported here [http://www.pulseaudio.org/ticket/114], pulseaudio
wakes up the audio hardware a lot, even when idle, which prevents the
CPU from entering C3/C4 state, thus killing battery life.

The module module-suspend-on-idle solves the problem (at least when no
sound is played).

Please, could you add:

load-module module-suspend-on-idle

to /etc/pulse/default.pa.

If you don't want to enable it by default, I strongly suggest that you
add it (commented out) with an explicit comment stating that it can save
a lot of battery life.

Regards,
                            Gabriel

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.25-2-686 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages pulseaudio depends on:
ii  adduser                       3.108      add and remove users and groups
ii  libasound2                    1.0.16-2   ALSA library
ii  libasyncns0                   0.3-1      Asyncronous name service query lib
ii  libc6                         2.7-12     GNU C Library: Shared libraries
ii  libcap1                       1:1.10-14  support for getting/setting POSIX.
ii  libdbus-1-3                   1.2.1-2    simple interprocess messaging syst
ii  libflac8                      1.2.1-1.2  Free Lossless Audio Codec - runtim
ii  libltdl3                      1.5.26-4   A system independent dlopen wrappe
ii  libogg0                       1.1.3-4    Ogg Bitstream Library
ii  liboil0.3                     0.3.14-4   Library of Optimized Inner Loops
ii  libpulsecore5                 0.9.10-2   PulseAudio sound server core
ii  libsamplerate0                0.1.3-1    audio rate conversion library
ii  libsndfile1                   1.0.17-4   Library for reading/writing audio 
ii  libwrap0                      7.6.q-15   Wietse Venema's TCP wrappers libra
ii  lsb-base                      3.2-12     Linux Standard Base 3.2 init scrip

Versions of packages pulseaudio recommends:
ii  gstreamer0.10-pulseaudio     0.9.7-2     GStreamer plugin for PulseAudio
ii  libasound2-plugins           1.0.16-1+b1 ALSA library additional plugins
ii  padevchooser                 0.9.3-2     PulseAudio Device Chooser
ii  paprefs                      0.9.6-2     PulseAudio Preferences
ii  pulseaudio-esound-compat     0.9.10-2    PulseAudio ESD compatibility layer
ii  pulseaudio-module-hal        0.9.10-2    HAL device detection module for Pu
ii  pulseaudio-module-x11        0.9.10-2    X11 module for PulseAudio sound se

-- no debconf information