stan wrote:
> On Mon, 07 May 2007 23:26:43 +0200
> Peter Rabbitson <rabbit@xxxxxxxxx> wrote:
>
>> The reason I started digging for it was that skype was extremely
>> choppy. I would be able to complete the test call as only one side
>> would speak at a time, but a real conversation was a nightmare. First
>> I suspected a duplex issue, but after your answer I tried
>> arecord/aplay combo and it worked. So I looked deeper and found some
>> references to asym. I decided to give it a try and created the
>> following .asoundrc:
>>
>> pcm.card0 {
>> type hw
>> card 0
>> }
>>
>> pcm.dmixer {
>> type hw
>> card 0
>> }
>>
>> pcm.skype {
>> type asym
>>
>> playback.pcm "dmixer"
>> capture.pcm "card0"
>> }
>>
>> pcm.!default {
>> type plug
>> slave.pcm "skype"
>> }
>>
>> Skype started working. However I needed !default to be a different
>> card, so I just started testing different configurations of stuff and
>> all of a sudden realized that skype _still_ works, no matter what I
>> do. I removed the .asoundrc, emptied /var/lib/alsa, reordered modules
>> so the skype card becomes card1, shut down the machine completely -
>> skype still worked after everything I did. On one hand I got what I
>> wanted, on another I am really irritated since I have no idea what
>> happened, and how did the change become permanent. Could someone
>> point me in the right direction? Thanks!
>
> When trying to get a Chaintech AV710 working I noticed that alsa seems
> to be stateful in just the way you did. My changes would seem to have
> no effect. I think the way I worked around it was to get things set up
> the way I wanted and then do /sbin/alsactl store <CR> and /sbin/alsactl
> restore <CR>. There are probably internal values stored and restored
> by default. Just an opinion as I am no expert on this.
>
`alsactl` holds its state in /var/lib/alsa/asound.state, which I had
explicitly deleted, and then did a quick shutdown (sysrq+u&s&b), so the
shutdown scripts would not recreate it. All volume levels were back to
their defaults, just as expected. But skype still worked basically with
the same configuration that I had when it was _not_ working.
It is almost like there is an additional place that holds the state that
I am not aware of.
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