Here's what I found:
At http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-karmic.git;a=commit;h=5f3b8f5e2b3b2d75dc76f6f870db4ea9b4062c31 It says it is fixed: Add some tricks to reduce the click noise at powering down to D3 in the power saving mode on STAC/IDT codecs.
Also, I checked the related bug reports and my bug seems to be a duplicate of bug 381693. Also there is some information in bug 380892.
Here's what I found:
At http:// kernel. ubuntu. com/git? p=ubuntu/ ubuntu- karmic. git;a=commit; h=5f3b8f5e2b3b2 d75dc76f6f870db 4ea9b4062c31
It says it is fixed:
Add some tricks to reduce the click noise at powering down to D3
in the power saving mode on STAC/IDT codecs.
Also, I checked the related bug reports and my bug seems to be a duplicate of bug 381693. Also there is some information in bug 380892.