I found that setting the Module-options
power_save=0
and
power_save_controller=N
in
/etc/modprobe.d/alsa-base.conf
get's overwritten in Natty in the file:
/usr/lib/pm-utils/power.d/intel-audio-powersave
I changed the line
INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
to
INTEL_AUDIO_POWERSAVE=false
Now Natty keeps the hda_intel adapter power_save settings as desired
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https://bugs.launchpad.net/bugs/381201
Title:
snd-hda-intel powersave option and "CLICK" from speakers
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