re: sound the problems continue. no device in lspci which is, as you know, bad news.
until that's fixed, none of this is really very relevant but: snd-powermac is in /etc/modules. looked for /etc/modprobe.d/blacklist.local.conf and nothing but instead we have:
i can't even find anywhere that lists what card it is to figure out whether or not it is supported or what driver is appropriate.
$ ls /etc/modprobe.d/
alsa-base.conf blacklist-framebuffer.conf blacklist-rare-network.conf
blacklist-ath_pci.conf blacklist.local.conf blacklist-watchdog.conf
blacklist.conf blacklist-modem.conf iwlwifi.conf
blacklist-firewire.conf blacklist-oss.conf libpisock9.conf
going to try a livecd and see if there's the same problems.