Sound problem on Blue G3

Sound problem on Blue G3

[Christian Groessler]

Hi,

I'm rather new to linuxppc and Macs.
I have now 2 Macs, a Beige G3 and a Blue G3 Tower.

The first one was the beige. The beige G3 can only boot with BootX,
but everything else seems to work. I use Debian 2.2 and stock Linux
2.4.3.

I set up the same configuration (Debian 2.2 and 2.4.3) on the blue G3,
and it works despite of the sound. The driver loads (modprobe
dmasound_awacs) but it is silent.

I tried the current PPC patches from kernel.org (patch-2.4.4-pre4.bz2
and linuxppc2.4_vs_v2.4.4-pre4.patch.bz2), but except for a rename of
the sound driver module (dmasound_awacs -> dmasound_pmac) nothing
changed (I.e. the sound still doesn't work!)

How can I get the sound working on the Blue G3?

Thanks for your help,

regards,
chris


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Re: Sound problem on Blue G3

[Iain Sandoe]

Hi Christian,

I take it from the first part of your message that sound is OK on the
g3/beige (I certainly hope so - that's the machine I test most on ;-)

> I tried the current PPC patches from kernel.org (patch-2.4.4-pre4.bz2
> and linuxppc2.4_vs_v2.4.4-pre4.patch.bz2), but except for a rename of
> the sound driver module (dmasound_awacs -> dmasound_pmac) nothing
> changed (I.e. the sound still doesn't work!)

Hmm.  can you send me the output of "cat /dev/sndstat" please. and tell me
if you have the "burgundy" sound chip (I think you do).

> How can I get the sound working on the Blue G3?

well, you could try applying the following two patches (I updated earlier
this pm):

ftp://ftp.penguinppc.org/users/iain/kernel/2_4_x/2.4.4p4-dmasound/dmas-2.4.4
p4-1.diff.bz2

and

ftp://ftp.penguinppc.org/users/iain/kernel/2_4_x/2.4.4p4-dmasound/dmas-2.4.4
p4-2.diff.bz2

(both need to be applied)... you should be able just to "make dep modules"
and "make modules_install" and go from there.

what desktop?
could you make sure that things aren't getting futzed by the mixer - I know
this sounds a little dumb - but could you try adjusting the levels of
speaker and input... even if they look like they are OK.

ciao,
Iain.

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Re: Sound problem on Blue G3

[Christian Groessler]

On 04/22/2001 11:42:48 PM CET "Iain Sandoe" wrote:
>
>Hi Christian,
>
>I take it from the first part of your message that sound is OK on the
>g3/beige (I certainly hope so - that's the machine I test most on ;-)

Yes. There it works. (Tested with doom and xmame and "cat xxx >
/dev/dsp")

>> I tried the current PPC patches from kernel.org (patch-2.4.4-pre4.bz2
>> and linuxppc2.4_vs_v2.4.4-pre4.patch.bz2), but except for a rename of
>> the sound driver module (dmasound_awacs -> dmasound_pmac) nothing
>> changed (I.e. the sound still doesn't work!)
>
>Hmm.  can you send me the output of "cat /dev/sndstat" please. and tell me
>if you have the "burgundy" sound chip (I think you do).

Here's /dev/sndstat:
PowerMac (AWACS rev 100) DMA sound driver rev 016 :
Core driver edition 01.01 : Built-in Sound driver edition 00.01
        sound.format = 0x8 (unsigned 8 bit)
        sound.speed = 8000Hz (phys. 44100Hz)
        sound.stereo = 0x0 (mono)
        sq.block_size = 32768 sq.max_count = 4 sq.max_active = 4
        sq.count = 0 sq.rear_size = 9568
        sq.active = 0 sq.syncing = 0

How do I know whether I have the "burgundy" sound chip?

>> How can I get the sound working on the Blue G3?
>
>well, you could try applying the following two patches (I updated earlier
>this pm):
>
>ftp://ftp.penguinppc.org/users/iain/kernel/2_4_x/2.4.4p4-dmasound/dmas-2.4.4
>p4-1.diff.bz2
>
>and
>
>ftp://ftp.penguinppc.org/users/iain/kernel/2_4_x/2.4.4p4-dmasound/dmas-2.4.4
>p4-2.diff.bz2
>
>(both need to be applied)... you should be able just to "make dep modules"
>and "make modules_install" and go from there.

I will do tomorrow (it's late by now)


>what desktop?
>could you make sure that things aren't getting futzed by the mixer - I know
>this sounds a little dumb - but could you try adjusting the levels of
>speaker and input... even if they look like they are OK.

I thought of this myself, but I installed some mixer programs and xmcd
and set the level to full in all of them. No avail. xmcd starts the CD
but nothing comes out of the speakers.

regards,
chris


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Re: Sound problem on Blue G3

[Ethan Benson]

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On Mon, Apr 23, 2001 at 12:23:08AM +0200, Christian Groessler wrote:

> How can I get the sound working on the Blue G3?
> 

do you have external speakers attached?  the internal speaker does not
work with linux.  (though i have not checked to see if this changed in
2.4, i use 2.2.19)

-- 
Ethan Benson
http://www.alaska.net/~erbenson/

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Re: Sound problem on Blue G3

[cpg]

On 04/22/2001 04:34:28 PM PST Ethan Benson wrote:
>
>On Mon, Apr 23, 2001 at 12:23:08AM +0200, Christian Groessler wrote:
>
>> How can I get the sound working on the Blue G3?
>>
>
>do you have external speakers attached?  the internal speaker does not
>work with linux.  (though i have not checked to see if this changed in
>2.4, i use 2.2.19)

I didn't have external speakers attached. I tried with external speakers and
-- it works!

Thanks for the hint!

chris


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