I'm about to send the following to alsa-user mailing list:
I've been trying to fix ALSA support for older PowerMacs. Anyone experiencing problems - like missing or inoperative or wrongly directed controls in alsamixer - could you, please, test my patch and write the results into this list or directly to me?
If you are still with me, check first with lsmod that you are using snd-powermac: $ lsmod | grep ^snd.powermac snd_powermac 56576 0 $
Then you will need to install make, C-compiler and kernel headers corresponding to your running kernel, f.ex (Ubuntu Dapper 6.06.1): $ sudo aptitude install make gcc linux-headers-2.6.15-26-powerpc
and fetch the ALSA driver source code and my patch: $ wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.16.tar.bz2 $ wget http://ristosu.wippiespace.com/pub/alsa-driver-1.0.16-p4.diff
Unpack the source and apply the patch: $ tar xjf alsa-driver-1.0.16.tar.bz2 $ cd alsa-driver-1.0.16 $ patch -p0 < ../alsa-driver-1.0.16-p4.diff
Finally configure: $ ./configure --disable-verbose-printk --with-kernel=/usr/src/linux-headers-2.6.15-26-powerpc --with-build=/usr/src/linux-headers-2.6.15-26-powerpc --with-moddir=/lib/modules/2.6.15-26-powerpc/updates/sound --with-isapnp=no --with-oss=yes --with-pcm-oss-plugins=yes --with-cards=powermac
make and install: $ make $ sudo make install-modules
To load the new modules without rebooting: $ sudo modprobe -r snd-powermac $ sudo modprobe -r snd-pcm-oss $ sudo modprobe snd-powermac
Risto