[mythtv-users] Boot Sound Volume Set to Zero, Realtek ALC888, GA-EP31-DS3L

Kevin Ross kevin at familyross.net
Fri Feb 26 23:37:37 UTC 2010


> From: Tortise
> Sent: Friday, February 26, 2010 3:24 PM
> 
> ----- Original Message -----
> From: "Kevin Ross" <kevin at familyross.net>
> To: "'Discussion about mythtv'" <mythtv-users at mythtv.org>
> Sent: Saturday, February 27, 2010 10:08 AM
> Subject: Re: [mythtv-users] Boot Sound Volume Set to Zero, Realtek
> ALC888,GA-EP31-DS3L
> 
> 
> > From: Tortise
> > Sent: Friday, February 26, 2010 11:53 AM
> >
> > I've not been able to find any leads how to turn my default boot
> sound
> > to 0dB, instead its always muted and slid right down
> > following boot.   Nothing seems to save it up.  I've tried sudo
> > alsamixer but that is also is reset.
> >
> > This problem seems related to the chips on this motherboard, as the
> > problem does not exist with similar frontends that used single
> > core Pentium 3000's.
> >
> > Using Mythbuntu 9.10.  I've set the sliders in mytthtv settings
> General
> > sound up to 100% and using alsa default.
> >
> > In restarting one has to go to the volume slider top right and slide
> it
> > up to get sound, it doesn't seem to matter what one does in
> > the mixer.  WAF on this is dogmatic about it.(!)
> >
> > The only related file I can find is /etc/modprobe.d/alsa-base.conf
> > however there is nothing obvious there.
> >
> > There seem to be no alsa logs running.
> >
> > Any leads would be appreciated.
> 
> > On shutdown it's supposed to run "alsactl store", and on startup
> "alsactl
> restore".  Can you run those manually (as root), and does it produce
> the
> expected results?
> 
> What I have tried is:
> 
> moby at mythtv7:~$ sudo -u root -i
> root at mythtv7:~# alsactl store
> root at mythtv7:~# alsactl restore
> 
> /var/lib/alsa/asound.state exists with owner root and rw-r--r-- and its
> date time suggests it is being updated.
> 
> As its 17K I put the file up at http://pastebin.ca/1812511
> 
> Its contents are unchanged (using Winmerge) from before and after
> running those alsactl commands.  Also seems there is a duplicate
> set of data in that one.
> 
> Checking the 2nd box with the same issue /var/lib/alsa/asound.state
> seems to be updated when the system shuts down.
> 
> http://pastebin.ca/1812557 has 3 successive versions of the file
> contents with comments.
> 
> I'm not sure if the method of shutting down is relevant?  Is using the
> Log Off menu the same as shutting down via the mythtv
> shutdown command?  Doesn't seem to be.
> 
> Back to first machine.  Set Sound max.  Shutdown.  Restart.  Contents
> of /var/lib/alsa/asound.state is unchanged and sound is again
> muted.  Hmmm

I'm not an ALSA expert, and I really don't know how to interpret the
contents of those files.  Maybe an expert will chime in.

Have you confirmed that storing and restoring the state actually works?
Meaning, set the volume to some level.  Save it with alsactl store.  Then
change the volume level.  Then try alsactl restore and see if the volume
goes back to the saved level.  If it doesn't, then you may have to ask the
ALSA experts on their mailing list/forum.



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