Date: Thu, 1 Dec 2005 15:02:52 +0100 From: Bruno Ducrot <ducrot@poupinou.org> To: Joe Shevland <jshevland@rowantreesoftware.com.au> Cc: freebsd-stable@freebsd.org Subject: Re: Lockup with powerd on amd64/tyan k8sd pro Message-ID: <20051201140252.GC17066@poupinou.org> In-Reply-To: <438EAF47.9010002@rowantreesoftware.com.au> References: <438EAF47.9010002@rowantreesoftware.com.au>
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On Thu, Dec 01, 2005 at 07:07:35PM +1100, Joe Shevland wrote: > I've installed 6-stable as of about two weeks ago. I tried out using > powerd in 'debug' mode (adaptive by default I guess), more for my own > interest's sake, and it locked up the machine solid. Prior to the > lock-up the messages reported is was dropping through the various MHz > steps, and then the lock-up when it reached what I'm guessing was the > lowest level. Could you post a full sysctl dev.cpu and the same with sysctl dev.powernow? Is the lowest frequency the only one which cause that look-up? If you change manually the frequency via a sysctl dev.cpu.0.freq=<something other than the lowest one> will tell us if that's the case. I think anyway that I found what is wrong. I think the 2 processors are doing a transition at the very same time, and it's possible that will confuse the northbridge. I don't have time to write a fix right now. I will post a patch to be tested latter. Thanks, -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care.
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