I think I have just encountered this same bug with the released version
of 8.04. I upgraded from 7.10 this morning, and my sound vanished. I
have an ASUS board with an Intel sound chip. The output of

  lspci -n | grep `lspci | grep -i audio | awk '{print $1}'`

is 00:1b.0 0403: 8086:284b (rev 02), and I think from what I have read
that the "284b" is critical.

Although the module snd_hda_intel is being loaded, there are no audio devices 
(no /dev/dsp, /dev/audio, etc.), and "cat /proc/asound/cards" 
produces: --- no soundcards ---

Rebooting with pnpacpi=off did not help, so I am stuck. Is there going
to be a new kernel for 8.04 at some point that fixes this? I don't want
to have to reinstall 7.10.

-- 
Ubuntu Hardy Heron alpha 5 no sound device
https://bugs.launchpad.net/bugs/194816
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