On Thursday 29 Dec 2016 12:26:23 Corbin Bird wrote:
> On 12/29/2016 07:21 AM, Mick wrote:
> > Hi All,
> > 
> > My sound has been behaving erratically for a while now, probably since
> > pulseaudio started being shipped with various desktop applications.  This
> > is what I am talking about:
> > 
> > Sound level undesirable
> > ==============
> > Kmail pops up a warning and the sound level is 100%.  The first time.  On
> > the second warning when it happens a couple of seconds later, the sound
> > level is back down to normal levels, say 55%.  Without me interfering
> > with any audio settings.
> > 
> > Some time later another warning pops up and this time the sound may be
> > normal, a second warning a couple of seconds later may be back to 100%. 
> > It appears to me as if sound levels generated by dekstop/application
> > warnings are adjusted dynamically on the fly and at will, but not my will
> > ...
> > 
> > Non-KDE applications, e.g. Pidgin bleep at top volume when IMs are
> > sent/received.  Adjusting their volume thankfully sticks, at least for the
> > desktop session in question.
> > 
> > 
> > Alsamixer
> > ======
> > 
> > Running alsamixer shows:
> >  Card: PulseAudio
> >  Chip: PulseAudio
> > 
> > with a single Master bar for adjusting the volume.  Selecting F6 shows
> > Sound Card set to (default), with 'HDA Intel MID' and 'HDA ATI HDMI'
> > below it.  When I select 0 for 'HDA Intel MID' I get all my familiar
> > alsamixer settings back including Master, Headphones, Speaker, PCM, Mic,
> > etc.
> > 
> > Adjusting these allow me to arrive at sane volume levels as used to be the
> > case in the past.  However, the annoying thing is these settings do not
> > stick between reboots.
> > 
> > 
> > On another laptop with a different audio card, things are even stranger. 
> > The card pops/crackles at boot time, but all sound is dead unless and
> > until I run alsactl init.  Then if the sound gets quite loud, e.g. the
> > other side of a Skype call raises their voice above a certain level, all
> > sound is lost until I run alsactl init again.  This is becoming tedious
> > to say the least.
> > 
> > 
> > Have you noticed anything similar to either of the above problems ?  What
> > may be causing these problems and are there any fixes/workarounds?  I
> > honestly can't recall sound ever being such a pain on my systems.
> 
> Link :
> > https://wiki.gentoo.org/wiki/ALSA
> 
> The link above is a good way to start. ( troubleshooting as well )
> Gentoo has a boot shell script that does the "alsactl init" and shutdown
> for you. ( media-sound/alsa-utils )
> Just be sure you also take a look at "/etc/modprobe.d/alsa.conf" and
> make the required changes there as well.

Thank you Corbin, I've already been through the article and my alsa.conf has 
been working happily for years.  This is a relatively recent problem though 
and I haven't found anything in the article that mentions these symptoms or 
addresses the problems I described above.

-- 
Regards,
Mick

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