[CM] no sound with latest kernels/alsa modules

[Noel Bush]

I've used apt-get update/upgrade to get the latest planetccrma-core, but
I have found that whenever I boot with any of the following kernels, I
cannot get any sound:

2.4.23-1.ll.rhfc1.ccrma
2.4.22-1.2129.nptl.caps.rhfc1.ccrma
2.4.22-9.23rc3.ll.rhfc1.ccrma
2.4.22-1.2115.nptl.caps.rhfc1.ccrma
2.4.22-1.2115.nptl

The most recent kernel that does work for me is:

2.4.21-1.ll.acpi

There are no errors when starting or restarting alsasound (except
complaints about the change in names of controls by alsactl).  I've
twiddled with the mixer to make sure nothing is muted.  I've checked to
see that all modules are loaded with lsmod.  What else can I try?

Thanks in advance,
Noel