[alsa-devel] Loud pops from Intel HDA onboard sound, may damage speakers (fwd)

[Takashi Iwai]

At Sat, 26 Mar 2011 12:12:46 +0000 (GMT),
Chris Wilson wrote:
> 
> Hi Takashi,
> 
> On Sat, 26 Mar 2011, Takashi Iwai wrote:
> > At Fri, 25 Mar 2011 23:40:42 +0000 (GMT),
> 
> >>>> Unfortunately, I can confirm that stock 2.6.38 does NOT resolve the
> >>>> pops on suspend and resume.
> >>>
> >>> OK, then did you try to set option power_save_controller=0 for
> >>> snd-hda-intel?
> >>
> >> I tried this by adding the following line to
> >> /etc/modprobe.d/alsa-base.conf:
> >>
> >>    options snd-hda-intel power_save_controller=0
> >>
> >> and after a reboot, I still get the same pops on suspend and resume. Is
> >> there some way to check dynamically whether the settings of the driver
> >> match what's configured here?
> >
> > The actual value is shown in /sys/module/snd_hda_intel/parameters/*.
> 
> Thanks, it shows the value "N", is that the same as "0"?

Yes.

Did you already try Kailang's patch?


Takashi