Mailing List Archive

Hello Matthew

On Mon, Apr 03, 2006 at 07:32:17AM +0000, Matthew Polashek wrote:
> I'm interested in making my Powerbook G4 1.5 17" a dual boot Gentoo

Which model exactly?

> Also, I'd like to use a kernel with the Ingo Molnar realtime
> preemption patch.

I don't know that specific patch, but preemption on PowerPC isn't what
you actually want. It causes programs to crash because of a corrupted
cache. It used to work when one enabled SMP, but I'm not sure wether
this is still the case.

Greets,
Michael

--
Gentoo Linux developer, http://hansmi.ch/, http://forkbomb.ch/
In most countries selling harmful things like drugs is punishable.
Then howcome people can sell Microsoft software and go unpunished?
(By hasku@rost.abo.fi, Hasse Skrifvars)

Hi!

I've got the Powerbook 17" G4 1.5 Ghz model. I think apple only one with that
monitor size and processor speed. I got the Video upgrade to 128 and upgraded
the hard drive to 5400 rpm.

Crappy. Is there a way to run audio apps safely on a PPC processor using Linux?
There must be a way to do this, right? I'm hoping to avoid going old school
like I did 4 years ago when I compiled the patches into my redhat 8 kernel on
i386. I think it's easier with Gentoo to do that kind of work, but I need to
find a good resource for this. Suggestions?

Anyway, what would you suggest I do to get stable audio on a PPC?

Thanks!
Matt

Matthew Polashek
matt@tinysongs.com
www.tinysongs.com

On Tue, 4 Apr 2006 20:55 , Michael Hanselmann <hansmi@gentoo.org> sent:

>Hello Matthew
>
>On Mon, Apr 03, 2006 at 07:32:17AM +0000, Matthew Polashek wrote:
>> I'm interested in making my Powerbook G4 1.5 17" a dual boot Gentoo
>
>Which model exactly?
>
>> Also, I'd like to use a kernel with the Ingo Molnar realtime
>> preemption patch.
>
>I don't know that specific patch, but preemption on PowerPC isn't what
>you actually want. It causes programs to crash because of a corrupted
>cache. It used to work when one enabled SMP, but I'm not sure wether
>this is still the case.
>
>Greets,
>Michael
>
>--
>Gentoo Linux developer, http://hansmi.ch/, http://forkbomb.ch/
>In most countries selling harmful things like drugs is punishable.
>Then howcome people can sell Microsoft software and go unpunished?
>(By hasku@rost.abo.fi, Hasse Skrifvars)




--
gentoo-ppc-user@gentoo.org mailing list

>Hello Matthew
>
>On Tue, Apr 04, 2006 at 12:02:19PM +0000, Matthew Polashek wrote:
>> I've got the Powerbook 17" G4 1.5 Ghz model. I think apple only one
>> with that monitor size and processor speed.
>
>Maybe, maybe not. It's not what I asked for. Read the output of "grep
>machine /proc/cpuinfo". There you'll find something like "PowerBook7,2"
>(the numbers are the important ones).
>
>I'm asking because on some models the sound is not yet supported. But
>there's a driver in development (snd-aoa, [1]).

Cool. I'll check it out.

>
>> Is there a way to run audio apps safely on a PPC processor using
>> Linux?
>
>I'm sure there is. You have always the source code at hand and can
>modify it to make it better.

Okay.

>
>> Anyway, what would you suggest I do to get stable audio on a PPC?
>
>Unfortunately, I don't have much expierience with professional audio on
>any platform. Sound output works on my G5 and one of my PowerBooks while
>another one doesn't have its sound chip supported yet (but will with
>snd-aoa). Digital output is said not to work for now, but it's planned
>to be included in snd-aoa once they figure it out.

I guess that would explain the sound driver error when I run the boot CD.

>
>Oh, and please learn how to quote. First and last warning from me.

I assume you mean you prefer nested quotes. Is that correct?

Matt

>
>Greets,
>Michael
>
>[1] http://johannes.sipsolutions.net/snd-aoa.git/
>
>--
>Gentoo Linux developer, http://hansmi.ch/, http://forkbomb.ch/
>Unix weanies are as bad at this as anyone.
> -- Larry Wall in 199702111730.JAA28598@wall.org>




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gentoo-ppc-user@gentoo.org mailing list

Hello Matthew

On Tue, Apr 04, 2006 at 12:02:19PM +0000, Matthew Polashek wrote:
> I've got the Powerbook 17" G4 1.5 Ghz model. I think apple only one
> with that monitor size and processor speed.

Maybe, maybe not. It's not what I asked for. Read the output of "grep
machine /proc/cpuinfo". There you'll find something like "PowerBook7,2"
(the numbers are the important ones).

I'm asking because on some models the sound is not yet supported. But
there's a driver in development (snd-aoa, [1]).

> Is there a way to run audio apps safely on a PPC processor using
> Linux?

I'm sure there is. You have always the source code at hand and can
modify it to make it better.

> Anyway, what would you suggest I do to get stable audio on a PPC?

Unfortunately, I don't have much expierience with professional audio on
any platform. Sound output works on my G5 and one of my PowerBooks while
another one doesn't have its sound chip supported yet (but will with
snd-aoa). Digital output is said not to work for now, but it's planned
to be included in snd-aoa once they figure it out.

Oh, and please learn how to quote. First and last warning from me.

Greets,
Michael

[1] http://johannes.sipsolutions.net/snd-aoa.git/

--
Gentoo Linux developer, http://hansmi.ch/, http://forkbomb.ch/
Unix weanies are as bad at this as anyone.
-- Larry Wall in <199702111730.JAA28598@wall.org>

On 4/4/06, Michael Hanselmann <hansmi@gentoo.org> wrote:
> Hello Matthew
>
> On Mon, Apr 03, 2006 at 07:32:17AM +0000, Matthew Polashek wrote:
> > I'm interested in making my Powerbook G4 1.5 17" a dual boot Gentoo
>
> Which model exactly?
>
> > Also, I'd like to use a kernel with the Ingo Molnar realtime
> > preemption patch.
>
> I don't know that specific patch, but preemption on PowerPC isn't what
> you actually want. It causes programs to crash because of a corrupted
> cache. It used to work when one enabled SMP, but I'm not sure wether
> this is still the case.

Recent kernels have a more stable preemption mechanism for PPC
--
Regards,
EddyP
=============================================
"Imagination is more important than knowledge" A.Einstein

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