I have the same issue on this audio chipset. Currently running a fully
updated Jaunty (fresh install).
$ lspci -v
00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
Subsystem: Acer Incorporated [ALI] Device 0126
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at d0880000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0
Enable-
Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
$ cat /proc/asound/cards
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xd0880000 irq 21
also attached is the 'ubuntu-bug -p alsa-base' report
** Attachment added: "'ubuntu-bug -p alsa-base' output"
http://launchpadlibrarian.net/32009741/sound.log
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Sound sizzle with Nvidia MCP67 on jaunty
https://bugs.launchpad.net/bugs/365754
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