ibook2.2, sarge, kernel2.6.8 & devfsd: no sound, no cd-writing

[Holger Levsen <debian@layer-acht.de>]

Hello,

I have an ibook2.2, which is running sarge with kernel-image-2.6.8-powerpc 
(2.6.8-3) and devfsd now.

processor       : 0
cpu             : 750FX
temperature     : 19-21 C (uncalibrated)
clock           : 800MHz
revision        : 2.2 (pvr 7000 0202)
bogomips        : 1585.15
machine         : PowerBook4,3
motherboard     : PowerBook4,3 MacRISC2 MacRISC Power Macintosh
detected as     : 257 (iBook 2 rev. 2)
pmac flags      : 0000000b
L2 cache        : 512K unified
memory          : 640MB
pmac-generation : NewWorld

matrix:~$ cat /proc/version
Linux version 2.6.8-powerpc (jens@yorick) (gcc version 3.3.4 (Debian 
1:3.3.4-9)) #1 Fri Aug 27 18:02:26 CEST 2004

My problems are no sound (no errors, xmms plays without problems, but there 
_is_ no sound) and not being able to burn cd (process hangs) 

With woody (and adrian bunks backported packages for kernel 2.6 on woody 
(rebuildt for powerpc)) and kernel-2.6.7-powerpc (deb from sarge) I had sound 
without problems. but using that kernel-package on sarge doesnt give me 
sound. 

should I use ALSA or OSS on this machine with kernel 2.6 ?

I have "hdb=ide-scsi devfs=mount" on my kernel-commandline (yaboot.conf), the 
user trying to use sound is in the group "audio" and the following modules 
in /etc/modules: "auto usbkbd usb-uhci keybdev mousedev hid sungem 
dmasound_pmac hfs agpgart uninorth-agp radeon ide-scsi ide-cd sr_mod sg 
usb-storage ehci-hcd hci_usb ohci-hcd usbhid aes cryptoloop"

Should I use ALSA (with these two modules. snd-powermac, snd-pcm-oss) 
instead ?

matrix:~$ cat /dev/sound/unknown6
PowerMac Snapper DMA sound driver rev 016 :
Core driver edition 01.06 : PowerMac Built-in Sound driver edition 00.07
HW rates: 44100 s/sec
HW AFMTS: signed 16 bit BE
                 === Formats & settings ===
Parameter                 soft                hard
Format   :    signed 16 bit BE    signed 16 bit BE
Samp Rate:         44100 s/sec         44100 s/sec
Channels :              stereo              stereo
                 === Sound Queue status ===
Allocated: Buffers  Size
    write:       4 32768
     read:       0     0
Current  : MaxFrg FragSiz MaxAct Frnt Rear Cnt RrSize A B S L  xruns
    write:      4    4096      4    0   -1   0      0 0 0 0 0      6
     read:      0       0      0    0    0   0      0 0 0 0 0      0


matrix:~$ ls /dev/sound/ -la
total 0
drwxr-xr-x  1 root root      0 Jan  1  1970 .
drwxr-xr-x  1 root root      0 Jan  1  1970 ..
crw-rw----  1 root audio 14, 3 Jan  1  1970 dsp
crw-rw----  1 root audio 14, 0 Jan  1  1970 mixer
crw-rw----  1 root audio 14, 6 Jan  1  1970 unknown6

xmms plays my music without error, but I cannot hear anything :(

Last, should I file a bug ?


any help & hints are very much appreciated.

regards,
	Holger

p.s.: this system is installed with fai (packages.debian.org/fai), so every 
debconf-question was answered with the default values.