status of powermac sound?

status of powermac sound?

[Niklas Werner]

Hi *,

is there any progress on the status of full support for the newer devices 
as snapper, etc (in the AlBooks,..). I'm running the 2.6.5 benh-kernel 
from bitkeeper and basically the sound only works reliably when using the 
oss emulation.

I can remember a short time under 2.6.* when alsa output actually worked, 
though...

If you need a guinea pig, I will gladly test patches on my AlBook running 
gentoo.

Have fun*

Niklas


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RE: status of powermac sound?

[Giuliano Pochini]

On 11-May-2004 Niklas Werner wrote:
> Hi *,
>
> is there any progress on the status of full support for the newer devices
> as snapper, etc (in the AlBooks,..). I'm running the 2.6.5 benh-kernel
> from bitkeeper and basically the sound only works reliably when using the
> oss emulation.

I have a G4-MDD (snapper) and the last time I tested it the sound worked
fine only if the buffer is a power of 2 and periods are an exact
submultiple, otherwise it skips. Furthermore it tends to distort as soon
as I raise the volume and it happes at a level lower than OSX. I'll do
more testing if it can help.


--
Giuliano.


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Re: status of powermac sound?

[Michel Dänzer]

On Wed, 2004-05-12 at 01:38, Niklas Werner wrote:
> 
> is there any progress on the status of full support for the newer devices 
> as snapper, etc (in the AlBooks,..). I'm running the 2.6.5 benh-kernel 
> from bitkeeper and basically the sound only works reliably when using the 
> oss emulation.
> 
> I can remember a short time under 2.6.* when alsa output actually worked, 
> though...

I have a

0 [Snapper        ]: PMac Snapper - PowerMac Snapper
                     PowerMac Snapper (Dev 26) Sub-frame 0

in a TiBook IV, and it's been working better than OSS ever did for quite
a while. My configuration is http://penguinppc.org/~daenzer/asound.conf

The only thing that bothers me is
https://bugtrack.alsa-project.org/alsa-bug/bug_view_advanced_page.php?bug_id=0000057, but I can live with it.


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer



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Re: status of powermac sound?

[Takashi Iwai]

At Wed, 12 May 2004 12:31:54 +0200,
Michel Dänzer wrote:
> 
> On Wed, 2004-05-12 at 01:38, Niklas Werner wrote:
> > 
> > is there any progress on the status of full support for the newer devices 
> > as snapper, etc (in the AlBooks,..). I'm running the 2.6.5 benh-kernel 
> > from bitkeeper and basically the sound only works reliably when using the 
> > oss emulation.
> > 
> > I can remember a short time under 2.6.* when alsa output actually worked, 
> > though...
> 
> I have a
> 
> 0 [Snapper        ]: PMac Snapper - PowerMac Snapper
>                      PowerMac Snapper (Dev 26) Sub-frame 0
> 
> in a TiBook IV, and it's been working better than OSS ever did for quite
> a while. My configuration is http://penguinppc.org/~daenzer/asound.conf
> 
> The only thing that bothers me is
> https://bugtrack.alsa-project.org/alsa-bug/bug_view_advanced_page.php?bug_id=0000057, but I can live with it.

sorry, forgot to answer BTS.
this bug might have been fixed in the recent CVS version (might be not
:)

please give a try.


Takashi


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Re: status of powermac sound?

[Michel Dänzer]

On Wed, 2004-05-12 at 12:57, Takashi Iwai wrote:
> At Wed, 12 May 2004 12:31:54 +0200,
> Michel Dänzer wrote:
> > 
> > The only thing that bothers me is
> > https://bugtrack.alsa-project.org/alsa-bug/bug_view_advanced_page.php?bug_id=0000057, but I can live with it.
> 
> sorry, forgot to answer BTS.
> this bug might have been fixed in the recent CVS version (might be not
> :)
> 
> please give a try.

Still the same problem unfortunately (I assume the potential fix was in
the alsa-kernel or alsa-driver CVS module?).


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer



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Re: status of powermac sound?

[Sjoerd Simons]

On Wed, May 12, 2004 at 12:31:54PM +0200, Michel Dänzer wrote:
> On Wed, 2004-05-12 at 01:38, Niklas Werner wrote:
> > 
> > is there any progress on the status of full support for the newer devices 
> > as snapper, etc (in the AlBooks,..). I'm running the 2.6.5 benh-kernel 
> > from bitkeeper and basically the sound only works reliably when using the 
> > oss emulation.
> > 
> > I can remember a short time under 2.6.* when alsa output actually worked, 
> > though...
> 
> I have a
> 
> 0 [Snapper        ]: PMac Snapper - PowerMac Snapper
>                      PowerMac Snapper (Dev 26) Sub-frame 0
> 
> in a TiBook IV, and it's been working better than OSS ever did for quite
> a while. My configuration is http://penguinppc.org/~daenzer/asound.conf

Using this on my albook. I get strange distorsions and a too low pitch when 
playing a dvd or divx with 48Khz audio.

For the record, the hardware is:
0 [Snapper        ]: PMac Snapper - PowerMac Snapper
                     PowerMac Snapper (Dev 35) Sub-frame 0

  Sjoerd
-- 
The savior becomes the victim.


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Re: status of powermac sound?

[Niklas Werner]

On Thu, 13 May 2004 02:53, Sjoerd Simons wrote:

> Using this on my albook. I get strange distorsions and a too low pitch
> when playing a dvd or divx with 48Khz audio.
>
> For the record, the hardware is:
> 0 [Snapper        ]: PMac Snapper - PowerMac Snapper
>                      PowerMac Snapper (Dev 35) Sub-frame 0

yep, exactly. And normally using alsa directly does not work, and if it 
does it shows the same effects...

mplayer with -ao alsa1x yields:

alsa-play: unknown status, trying to reset soundcard

works fine with -ao oss
xmms doesn't work with alsa-plugin at all (well, OK, who cares... xmms 
seems to have died anyways...)

astonishingly jackd normally works. Is there an option to force the driver 
to always use a buffer size of a power of 2?

Have fun*

Niklas


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Re: status of powermac sound?

[Sjoerd Simons]

On Thu, May 13, 2004 at 09:15:34AM +1200, Niklas Werner wrote:
> On Thu, 13 May 2004 02:53, Sjoerd Simons wrote:
> 
> > Using this on my albook. I get strange distorsions and a too low pitch
> > when playing a dvd or divx with 48Khz audio.
> >
> > For the record, the hardware is:
> > 0 [Snapper        ]: PMac Snapper - PowerMac Snapper
> >                      PowerMac Snapper (Dev 35) Sub-frame 0
> 
> yep, exactly. And normally using alsa directly does not work, and if it 
> does it shows the same effects...
> 
> mplayer with -ao alsa1x yields:
> 
> alsa-play: unknown status, trying to reset soundcard
> 
> works fine with -ao oss
> xmms doesn't work with alsa-plugin at all (well, OK, who cares... xmms 
> seems to have died anyways...)

rhythmbox (with gstreamer 0.8 backend) and gnomemeeting 1.0.2 both work fine 
with alsa directly here (vanilla 2.6.6 kernel). As long as the samplerate is 
44100hz alsa works perfectly :)

  Sjoerd
-- 
Since everything in life is but an experience perfect in being what it is,
having nothing to do with good or bad, acceptance or rejection, one may well
burst out in laughter.
		-- Long Chen Pa


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