kern/93790: cpufreq missing frequencies

[Colin Percival]

Synopsis: cpufreq missing frequencies

State-Changed-From-To: open->analyzed
State-Changed-By: cperciva
State-Changed-When: Sat Feb 25 05:06:32 UTC 2006
State-Changed-Why: 
The Enhanced SpeedStep driver was written before Intel released mobile
processors with a 533MHz bus speed; it is recognizing the processor as
having a 15x clock multiplier, and deciding that this means it is a 1.5GHz
processor.

This means that the Enhanced SpeedStep code has incorrectly recognized the
processor and there may be frequencies which the driver is unable to use;
but the main effect is simply that the frequencies are printed incorrectly:
The frequency 2.0GHz is reported as 1.5GHz, the frequency 800MHz is reported
as 600MHz, etc.

Until this can be fixed properly, I suggest ignoring the frequency information
returned by the driver; if the submitter uses powerd(8) he will find that it
operates just as well in spite of the driver being somewhat confused.



Responsible-Changed-From-To: freebsd-bugs->cperciva
Responsible-Changed-By: cperciva
Responsible-Changed-When: Sat Feb 25 05:06:32 UTC 2006
Responsible-Changed-Why: 


http://www.freebsd.org/cgi/query-pr.cgi?pr=93790