Re: No sound from Flash, but other methods work well

[Ron Johnson <ron.l.johnson@cox.net>]

On 07/18/2010 03:54 AM, Florian Kulzer wrote:
> On Sat, Jul 17, 2010 at 18:41:35 -0500, Ron Johnson wrote:
> > On 07/17/2010 05:57 PM, Camaleón wrote:
> > > On Sat, 17 Jul 2010 17:13:35 -0500, Ron Johnson wrote:
> > >
> > > > On 07/17/2010 04:30 PM, Camaleón wrote:
> > >
> > > > > Run "alsamixer" and check the volume for all the channels :-?
> > > > First thing I did.
> > > >
> > > > Note, though, that for USB Audio there are only three channels: Bass,
> > > > Treble, PCM.
> > > >
> > > > No "Master".  That may very well be the problem, but I don't know what
> > > > to do about it.
> > >
> > > Yep, but having no master channel should also make no sound for the rest
> > > of the applications and not just Icewasel :-?
> > >
> > > It's quite bizarre...
> > >
> > > Wait, is the USB device a headset or an external sound card?
> >
> > Speakers.  But effectively big headsets.
> >
> > >                                                              I say that
> > > beacuse of this:
> > >
> > > http://www.google.com/webhp?hl=en#hl=en&q=firefox+flash+headset+sound+linux&fp=6c67857170793776
> >
> > They all reference asoundconf which has apparently been deprecated
> > for PA.
> >
> > > Maybe is not just Flash the only app having no sound in Iceweasel.
> >
> > MP3s play just fine.
>
> Knowing which audio devices are grabbed by which processes might shed
> some light on the situation; I would be interested to see the output of
>
>    lsof +c0 $(find /dev/ -group audio)
>
> both when flashplayer tries and fails to play sound and when other
> plugins of iceweasel do so successfully.

Attached are 3 files.

I'm sure it's relevant (and I deeply apologize for forgetting about 
this) that sound only plays *at all* when I've got this ~/.asoundrc 
file:

$ cat .asoundrc
pcm.!default {
    type hw
    card Device
}

> Another test would be if killing the pulseaudio daemon makes the sound
> devices accessible to flashplayer.

I don't use PA.

> Also, which value of ICEWEASEL_DSP is set in /etc/iceweasel/iceweaselrc?

"none"

--
Seek truth from facts.

$ lsof +c0 $(find /dev/ -group audio)
COMMAND        PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mixer_applet2 2193  ron   21r   CHR  116,9      0t0 3204 /dev/snd/controlC0
aqualung      3251  ron  mem    CHR  116,8          3201 /dev/snd/pcmC0D0p
aqualung      3251  ron    4r   CHR  116,8      0t0 3201 /dev/snd/pcmC0D0p

$ lsof +c0 $(find /dev/ -group audio)
COMMAND        PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mixer_applet2 2193  ron   21r   CHR  116,9      0t0 3204 /dev/snd/controlC0

$ cat dsp.quiet.txt
 lsof +c0 $(find /dev/ -group audio)
COMMAND        PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mixer_applet2 2193  ron   21r   CHR  116,9      0t0 3204 /dev/snd/controlC0