Before compiling alsa-driver 1.0.15rc3 I decided to look more closely
about what is wrong with alsa-driver 1.0.14 since it did partially work
with a stock Gutsy Gibbon Tribe 5.  Staying current with the packages
has broken sound support.  It originally worked by producing sound only
through the headphone jack and not through the speakers.

It's interesting to find these kernel modules loaded, which I believe is
corrrect.

$ lsmod | grep hda_intel
snd_hda_intel         337192  0 
snd_pcm                94344  2 snd_hda_intel,snd_pcm_oss
snd                    69288  10 
snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
snd_page_alloc         11920  2 snd_hda_intel,snd_pcm

The thing that is clearly missing are the devices.

$ ls -l /dev/dsp /dev/mixer /dev/sequencer /dev/midi
ls: /dev/dsp: No such file or directory
ls: /dev/mixer: No such file or directory
ls: /dev/midi: No such file or directory
crw-rw---- 1 root audio 14, 1 2007-09-29 10:46 /dev/sequencer

The instructions at the URL below make it clear that if I have devfs
then I don't need to create those devices.

http://www.alsa-project.org/main/index.php/Matrix:Module-hda-intel

NB: If you are using drivers before 0.9.4 then you need to run:
     ./snddevices

The snddevices script sets the permissions for the devices it creates to root.
If you use devfs then you should not run the snddevices script.
Otherwise run:

     chmod a+rw /dev/dsp /dev/mixer /dev/sequencer /dev/midi

Now it is clear that Gutsy Gibbon doesn't use devfs as it has been
replaced by udev.  I guess that udev and alsa-driver 1.0.14 don't work
together well because the latter depends on devfs.  I will next create
those devices that udev doesn't and see if sound works.

-- 
Dell Vostro 1700, ich8 no sound
https://bugs.launchpad.net/bugs/136412
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