After about 10 seconds the disc would disappear. I wouldn't get it for a few minutes, and then randomly get it again. It didn't appear to be connected to any behavior unless you include things like clicking on links and putting text into form elements.
I finally found the fix posted by Guttiwuts on the Apple Support Discussion boards. The culprit appears to have been the Core Audio daemon,
/usr/sbin/coreaudiod
and the solution is to remove:/System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist
and restart. That stops the daemon from starting up and appears to COMPLETELY FIX the problem. I'm guessing that Core Audio is tied intimately into the kernel and is given high enough priority that its misbehaving steps on other processes access to the kernel.
I have no idea what this does to you if you need Core Audio for whatever it is you do (make music, probably). Maybe it doesn't matter with well behaved music apps. Don't know.
Interestingly, this did not happen at all on my two year old white MacBook, though I ripped out the plist just the same. I have to guess that there's something about this new hardware that makes it worse.
Strangely, there aren't a ton of reports about it. Kind of frustrating and it makes me hope that Apple's going to address this in 10.6.2.
1 comments:
I'm not sure either what it fully does but it clearly fixes all the slowness I've been having (and speeded it up even further since upgrading from leopard).
You do lose Finder sounds however (clearing trash, etc.) but until I find a better fix the tradeoff is worth it in my opinion.
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