[MinnowBoard] CPU max frequency only 1GHz

Hawley, John john.hawley at intel.com
Sun Sep 7 01:26:53 UTC 2014


This got opened a couple of days ago, still trying to figure out if this is the firmware miss-reporting something up in to the OS, or if the OS has a bug in how it’s handling P-states.

- John

From: elinux-minnowboard-bounces at lists.elinux.org [mailto:elinux-minnowboard-bounces at lists.elinux.org] On Behalf Of Ferchu R
Sent: Saturday, September 6, 2014 1:27 PM
To: MinnowBoard Development and Community Discussion
Subject: Re: [MinnowBoard] CPU max frequency only 1GHz

In my system "CPU max MHz" and "CPU min MHz" are not shown. In the other hand, "CPU MHz" seems to show the theorical maximum only when the proccessor is on high load of work.

2014-09-06 14:05 GMT-05:00 Markus Maier <maier.m at web.de<mailto:maier.m at web.de>>:
Hi all,

Ubuntu correctly recognizes the CPU of my Minnowboard MAX as E3825  @ 1.33GHz but restricts the maximum frequency to 1GHz. Here is what lscpu gives me:

Model name:            Intel(R) Atom(TM) CPU  E3825  @ 1.33GHz
Stepping:              3
CPU MHz:               400.039
CPU max MHz:           1000,0000
CPU min MHz:           400,0000

There was a discussion on the IRC channel lately and I’m wondering if anyone has investigated in this?


elinux-MinnowBoard mailing list
elinux-MinnowBoard at lists.elinux.org<mailto:elinux-MinnowBoard at lists.elinux.org>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.elinux.org/pipermail/elinux-minnowboard/attachments/20140907/d0077b76/attachment-0001.html>

More information about the elinux-MinnowBoard mailing list