Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Barry Scott]

I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
alsamixer reports that the Chip is Realtek ALC260.

Both amixer and alsamixer show that the PCM control is missing after 
booting.
After playing a wav file with aplay the PCM control shows up in both
amixer and alsamixer.

Is there something I need to configure or is this a bug in1.0.12rc1?

Barry


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Re: Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Takashi Iwai]

At Tue, 27 Jun 2006 12:54:05 +0100,
Barry Scott wrote:
> 
> I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
> alsamixer reports that the Chip is Realtek ALC260.
> 
> Both amixer and alsamixer show that the PCM control is missing after 
> booting.
> After playing a wav file with aplay the PCM control shows up in both
> amixer and alsamixer.
> 
> Is there something I need to configure or is this a bug in1.0.12rc1?

The PCM volume is added dynamically by alsa-lib softvol plugin.
Usually your system stores/restores the mixer status so that the PCM
volume reappears again at the next boot.


Takashi

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Re: Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Barry Scott]

Takashi Iwai wrote:
> At Tue, 27 Jun 2006 12:54:05 +0100,
> Barry Scott wrote:
>   
>> I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
>> alsamixer reports that the Chip is Realtek ALC260.
>>
>> Both amixer and alsamixer show that the PCM control is missing after 
>> booting.
>> After playing a wav file with aplay the PCM control shows up in both
>> amixer and alsamixer.
>>
>> Is there something I need to configure or is this a bug in1.0.12rc1?
>>     
>
> The PCM volume is added dynamically by alsa-lib softvol plugin.
> Usually your system stores/restores the mixer status so that the PCM
> volume reappears again at the next boot.
>
>
> Takashi
>   
What is it that I need to setup to turn on the PCM? The "system" is me 
and this
is a new setup requirement that I have not seen before.

Barry


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Re: Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Takashi Iwai]

At Tue, 27 Jun 2006 15:12:46 +0100,
Barry Scott wrote:
> 
> Takashi Iwai wrote:
> > At Tue, 27 Jun 2006 12:54:05 +0100,
> > Barry Scott wrote:
> >   
> >> I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
> >> alsamixer reports that the Chip is Realtek ALC260.
> >>
> >> Both amixer and alsamixer show that the PCM control is missing after 
> >> booting.
> >> After playing a wav file with aplay the PCM control shows up in both
> >> amixer and alsamixer.
> >>
> >> Is there something I need to configure or is this a bug in1.0.12rc1?
> >>     
> >
> > The PCM volume is added dynamically by alsa-lib softvol plugin.
> > Usually your system stores/restores the mixer status so that the PCM
> > volume reappears again at the next boot.
> >
> >
> > Takashi
> >   
> What is it that I need to setup to turn on the PCM? The "system" is me 
> and this
> is a new setup requirement that I have not seen before.

"alsactl store" at shutdown and "alsactl restore" at boot will recover
the last mixer status.  This also automatically recovers the
user-space element like "PCM".

How the call of alsactl is implement depends on the distro.
(E.g. via udev or init script or modprobe hook)


Takashi

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Re: Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Barry Scott]

Takashi Iwai wrote:
> At Tue, 27 Jun 2006 15:12:46 +0100,
> Barry Scott wrote:
>   
>> Takashi Iwai wrote:
>>     
>>> At Tue, 27 Jun 2006 12:54:05 +0100,
>>> Barry Scott wrote:
>>>   
>>>       
>>>> I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
>>>> alsamixer reports that the Chip is Realtek ALC260.
>>>>
>>>> Both amixer and alsamixer show that the PCM control is missing after 
>>>> booting.
>>>> After playing a wav file with aplay the PCM control shows up in both
>>>> amixer and alsamixer.
>>>>
>>>> Is there something I need to configure or is this a bug in1.0.12rc1?
>>>>     
>>>>         
>>> The PCM volume is added dynamically by alsa-lib softvol plugin.
>>> Usually your system stores/restores the mixer status so that the PCM
>>> volume reappears again at the next boot.
>>>
>>>
>>> Takashi
>>>   
>>>       
>> What is it that I need to setup to turn on the PCM? The "system" is me 
>> and this
>> is a new setup requirement that I have not seen before.
>>     
>
> "alsactl store" at shutdown and "alsactl restore" at boot will recover
> the last mixer status.  This also automatically recovers the
> user-space element like "PCM".
>
> How the call of alsactl is implement depends on the distro.
> (E.g. via udev or init script or modprobe hook)
>
>
> Takashi
>   
The piece of information I'm missing is how to add PCM in the first place.
What command do I need to issue to add PCM?

Barry


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Re: Alsa v1.0.12rc1 Realtek ALC260 PCM missing at boot

[Takashi Iwai]

At Tue, 27 Jun 2006 15:22:30 +0100,
Barry Scott wrote:
> 
> Takashi Iwai wrote:
> > At Tue, 27 Jun 2006 15:12:46 +0100,
> > Barry Scott wrote:
> >   
> >> Takashi Iwai wrote:
> >>     
> >>> At Tue, 27 Jun 2006 12:54:05 +0100,
> >>> Barry Scott wrote:
> >>>   
> >>>       
> >>>> I'm using 21.6.17.1 with v1.0.12rc1 drivers, libs and utils on FC4.
> >>>> alsamixer reports that the Chip is Realtek ALC260.
> >>>>
> >>>> Both amixer and alsamixer show that the PCM control is missing after 
> >>>> booting.
> >>>> After playing a wav file with aplay the PCM control shows up in both
> >>>> amixer and alsamixer.
> >>>>
> >>>> Is there something I need to configure or is this a bug in1.0.12rc1?
> >>>>     
> >>>>         
> >>> The PCM volume is added dynamically by alsa-lib softvol plugin.
> >>> Usually your system stores/restores the mixer status so that the PCM
> >>> volume reappears again at the next boot.
> >>>
> >>>
> >>> Takashi
> >>>   
> >>>       
> >> What is it that I need to setup to turn on the PCM? The "system" is me 
> >> and this
> >> is a new setup requirement that I have not seen before.
> >>     
> >
> > "alsactl store" at shutdown and "alsactl restore" at boot will recover
> > the last mixer status.  This also automatically recovers the
> > user-space element like "PCM".
> >
> > How the call of alsactl is implement depends on the distro.
> > (E.g. via udev or init script or modprobe hook)
> >
> >
> > Takashi
> >   
> The piece of information I'm missing is how to add PCM in the first place.
> What command do I need to issue to add PCM?

Play something :)  Even the below

	aplay </dev/null

would be enough (although aplay tells an error).

More exactly, when you call snd_pcm_open() with "default" PCM device,
it'll be added.


Takashi

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