Re: [gentoo-user] Oss/Alsa/Pulseaudio: never-ending wars (VBox)

[n952162]

On 2020-02-19 23:24, Mick wrote:
> On Wednesday, 19 February 2020 22:08:28 GMT n952162 wrote:
>> On 2020-02-19 22:58, n952162 wrote:
>>> On 2020-02-19 22:43, Mick wrote:
>>>> On Wednesday, 19 February 2020 19:31:08 GMT n952162 wrote:
>>>>> Perhaps coincidentally, that's almost identical to what I have on the
> host:
>>>>>       01~>cat .asoundrc
>>>>>       defaults.pcm.!card 1
>>>>>       defaults.pcm.!device 0
>>>>>       defaults.pcm.!ctl 1
>>>> Isn't the exclamation mark "!" negating what follows it?
>>>>
>>>> If you are disabling all of them, you'll end up with the default setting,
>>>> I
>>>> think.
>>> Do you have a reference for that?  I haven't been able to work out the
>>> logic of what that might mean.
>>>
>>> That "defaults.pcm.!card 1" might "*disable*" card 1 doesn't seem
>>> plausible to me.  If the default is 0, how is that improved by
>>> "/disabling/" card 1?  And, how do you assign card 1 to defaults, in
>>> that case?
>> *$ cat /etc/alsa/conf.d/99-pulseaudio-default.conf.example *
>> # Default to PulseAudio
>>
>> pcm.!default {
>>       type pulse
>>       hint {
>>           show on
>>           description "Default ALSA Output (currently PulseAudio Sound
>> Server)"
>>       }
>> }
>>
>> ctl.!default {
>>       type pulse
>> }
>>
>> What would the bangs here mean?
> I understand the exclation mark in the above statements to mean "change the
> default" to "type pulse", but it has been years since I hacked asoundrc.  Have
> a look here:
>
> https://alsa.opensrc.org/Asoundrc
>

Yes, I've seen that, and it's the best there is out there, but it
doesn't describe the grammar or semantics.  It just gives a few random
examples but the grammar is complicated enough that I can't interpolate
from those.

That's why I asked elsewhere about retaining the sources of an emerge -
at some point I guess I'll have to go into ... I guess alsamixer ... and
reverse engineer it.