Clocks broken on Mac mini

Hal Murray hmurray at megapathdsl.net
Mon Jan 30 18:53:27 UTC 2017


> $ cat /proc/cmdline
root=UUID=48d99649-90b2-4dc6-be05-5ca3858579a1 ro 


hugh at blemings.org said:
> That sounds right for getting into OpenFirware - but for what we're  digging
> into you shouldn't need to putz with it. 

It looks like the kernel code is getting the clock frequency from Open 
Firmware.  If that's off, it could lead to this sort of problem.

The Intel version of Linux calibrates the TSC against one of the other clocks 
that is well specified, or at least constant in practice.

-- 
These are my opinions.  I hate spam.





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