Re: no sound on a G4 powerbook

Re: no sound on a G4 powerbook

[ewitness - Ben Fowler]

>Date: Thu, 08 Aug 2002 17:59:11 +0200
>From: Takashi Iwai <tiwai@suse.de>
>Subject: [Alsa-devel] Re: no sound on a G4 powerbook
>
>Hi,
>
>At Thu, 8 Aug 2002 17:42:34 +0200,
>Maarten de Boer wrote:
>>
>> Hello,
>>
> > I am trying to get alsa working on a G4 powerbook (Tumbler).
> > I am using the  latest CVS sources, but have also tried rc2.
> > Modules load, I unmute and adjust volume, but alas: no sound.
> >
>> The dmasound_pmac modules however do work and sound.
>> But obviously, I want alsa.
>>
>> I saw a similar message in the achives:
>> http://www.geocrawler.com/archives/3/12350/2002/3/0/8248990/
>> without reply...
>>
>> Help is greatly appreciated!
>
>i'll start debugging from tomorrow.  please be patient for a while :)
>
>
>ciao,
>
>Takashi

Is this happening with the CD player?

It is possible that Alsa is set-up for CD Audio to reach
the sound hardware on an analogue line. If the sound
hardware, such  as 'Screamer' does not have such an
input then it may be impossible to raise the CD volume
above zero (check the maximum level quoted in amixer).

Modern Macs do not use analogue connections between the
CD player and the sound hardware, but a digital connection.

There is a patch to xmms that may help.
<URL: http://www.imaclinux.net/gh.php?single=18 >

Ben.
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Re: Re: no sound on a G4 powerbook

[Takashi Iwai]

At Thu, 8 Aug 2002 21:30:13 +0100,
ewitness - Ben Fowler wrote:
> 
> Is this happening with the CD player?
> 
> It is possible that Alsa is set-up for CD Audio to reach
> the sound hardware on an analogue line. If the sound
> hardware, such  as 'Screamer' does not have such an
> input then it may be impossible to raise the CD volume
> above zero (check the maximum level quoted in amixer).
> 
> Modern Macs do not use analogue connections between the
> CD player and the sound hardware, but a digital connection.
 
yes.  you need to read CDDA.
in such a case, it's impossible to support cd on the driver side.
it's an application's job.


ciao,

Takashi


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Re: Re: no sound on a G4 powerbook

[Maarten de Boer]

>> Is this happening with the CD player?

No, I am getting no sound at all. For example with xmms, aplay,
test/pcm.c etc. 

Maarten


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