On Fri, 2007-05-11 at 08:53 -0600, M. Warner Losh wrote: > In message: <[EMAIL PROTECTED]> > Martin Dieringer <[EMAIL PROTECTED]> writes: > : This is NOT a hardware problem. 1. I have this on 2 machines, 2. the > : problem is solved by switching to ACPI instead of APM > > It is a hardware problem. APM + powerd changes the frequency of the > TSC. If the TSC is used as the time source, then you'll get bad > timekeeping. ACPI uses its own frequency source that is much more > stable and independent of the TSC, so switching to it fixes the > problem because you are switching the hardware from using a really bad > frequency source with ugly steps to using a good frequency source w/o > steps. > > Warner
Surely that would imply that it is a software misconfiguration issue. If the TSC is unreliable under fairly standard duties, and there exists an alternate source that is reliable, surely that indicates the manufacturer has identified a problem, and solved it with alternate hardware. The failure then to use the correct hardware is a software misconfiguration. Cheers Tom
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