Re: sound issues
On Sun, Dec 23, 2007 at 10:17:01PM -0800, Itai Seggev wrote:
> Dear Debian PowerPC list:
>
> I have an early 2005 Powerbook G4 12". (I see people to this list make
> refernces to strange number-hyphenated models, but I do not know how to get
> this. If this would be useful, let me know how to find it.)
Not necessarily usefull, but for futher reference: /proc/cpuinfo contains the
model name of your machine,.
> I have a very strange sound problem. Sound works fine in my custom 2.6.21
> kernel. Sound also works fine in 2.6.22-3-powerpc kernel. However, if I take
> the tree generated from linux-source-2.6.22, copy my 2.6.21 configuration, and
> make oldconfig, /dev/dsp disappears. This is despite the fact that all the
> same snd-* modules are loaded at boot time. Since Debian's kernel worked, I
> also tried copying 2.6.22-powerpc's config, making a couple of minor
> changes[1], and compiling that, but that had the same mysterious disappearance
> of /dev/dsp.
>
> So, any idea what's wrong or how to fix it? I'd be happy to try things or
> provide additional infromation if that would be helpful.
/dev/dsp is an OSS device. Which been superseeded by ALSA quite some time ago.
For OSS emulation, check if the snd_pcm_oss is loaded. If it is, check if
/proc/asound/cards contains an entry for your sound card.
If both are correct, i don't really know..
> [1] Minor changes: I turned off DRM and a few of the framebuffer drivers,
> since I use Nouveau primarily and it doesn't like the vanilla drm module. I
> didn't alter any of the sound driver configruation details.
You don't need to recompile your kernel for that. You can boot with the
framebuffer driver turned off and blacklist the drm module.
Sjoerd
--
Reality is nothing but a collective hunch.
-- Lily Tomlin
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