.asoundrc file

.asoundrc file

[Kris Modrak]

The start of my .asoundrc file is as follows:

pcm.rme9652 {
type hw
card 0
device 0
}

ctl.rme9652 {
type hw
card 0
}

What is the purpose of the ctl.rme9652 declaration? My plugin devices
seem to work without it.

Regards
Kris Modrak


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Re: .asoundrc file

[Patrick Shirkey]

Kris Modrak wrote:
> The start of my .asoundrc file is as follows:
> 
> pcm.rme9652 {
> type hw
> card 0
> device 0
> }
> 
> ctl.rme9652 {
> type hw
> card 0
> }
> 
> What is the purpose of the ctl.rme9652 declaration? My plugin devices
> seem to work without it.
> 

It is a configuration for the onboard mixer. Very little is known about 
why we use it. Some programs (JACK) won't work without it.


> Regards
> Kris Modrak
> 
> 
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> 



-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.boosthardware.com/LAU/guide/
========================================



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Re: .asoundrc file

[Kris Modrak]

Patrick Shirkey wrote:
> 
> Kris Modrak wrote:
> > The start of my .asoundrc file is as follows:
> >
> > pcm.rme9652 {
> > type hw
> > card 0
> > device 0
> > }
> >
> > ctl.rme9652 {
> > type hw
> > card 0
> > }
> >
> > What is the purpose of the ctl.rme9652 declaration? My plugin devices
> > seem to work without it.
> >
> 
> It is a configuration for the onboard mixer. Very little is known about
> why we use it. Some programs (JACK) won't work without it.

The Hammerfall Light doesn't have a mixer I guess I don't need it?

> 
> > Regards
> > Kris Modrak
> >
> >
> > -------------------------------------------------------
> > This sf.net email is sponsored by: OSDN - Tired of that same old
> > cell phone?  Get a new here for FREE!
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> > _______________________________________________
> > Alsa-devel mailing list
> > Alsa-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/alsa-devel
> >
> >
> 
> --
> Patrick Shirkey - Boost Hardware Ltd.
> For the discerning hardware connoisseur
> Http://www.boosthardware.com
> Http://www.boosthardware.com/LAU/guide/
> ========================================


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Re: .asoundrc file

[Paul Davis]

>> What is the purpose of the ctl.rme9652 declaration? My plugin devices
>> seem to work without it.
>> 
>
>It is a configuration for the onboard mixer. Very little is known about 
>why we use it. Some programs (JACK) won't work without it.

not really.

the control device for a card is the way that programs modify various,
suprise, "controls" on the card. for many cards, this includes the
mixer, though in the example above, the rme9652 has no mixer. it does
still have a number of controls, however, and JACK needs to be able to
access them. Examples include the digital i/o sync indicators, sample
clock source switch and so on.

as for why the name itself is required: JACK was written to open both
the PCM and control devices using a single name. I felt this was nicer
and less confusing than asking the user to specify two different
names.

--p


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Re: .asoundrc file

[Patrick Shirkey]

Paul Davis wrote:
>>>What is the purpose of the ctl.rme9652 declaration? My plugin devices
>>>seem to work without it.
>>>
>>
>>It is a configuration for the onboard mixer. Very little is known about 
>>why we use it. Some programs (JACK) won't work without it.
> 
> 
> not really.
> 
> the control device for a card is the way that programs modify various,
> suprise, "controls" on the card. for many cards, this includes the
> mixer, though in the example above, the rme9652 has no mixer. it does
> still have a number of controls, however, and JACK needs to be able to
> access them. Examples include the digital i/o sync indicators, sample
> clock source switch and so on.
> 

Great that's a nice simple explanation. I have added it to the asoundrc 
page.

> as for why the name itself is required: JACK was written to open both
> the PCM and control devices using a single name. I felt this was nicer
> and less confusing than asking the user to specify two different
> names.
> 

Someone might want to submit this as a note too.


-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.boosthardware.com/LAU/guide/
========================================



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