Bug 217182 - speedstep centrino support not enabled in kernel
speedstep centrino support not enabled in kernel
Status: CLOSED DUPLICATE of bug 211941
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Kernel Maintainer List
Brian Brock
Depends On:
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Reported: 2006-11-24 13:56 EST by Stephen Hemminger
Modified: 2008-08-02 19:40 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2006-11-24 19:25:41 EST
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Description Stephen Hemminger 2006-11-24 13:56:57 EST
Description of problem:
Since the cpu frequency control for Pentium-M is not enabled by default
in the FC6 kernel (CONFIG_X86_SPEEDSTEP_CENTRINO). There is no frequency
control and laptop always runs full speed.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. boot
2. look for cpufreq in /sys (it's missing)
3. frequency control from gnome-power-manager etc can't work

It works if I build a upstream kernel and enable it.  

Actual results:

Expected results:

Additional info:
Is this intentional or unintentional
Comment 1 Dave Jones 2006-11-24 16:48:31 EST

$ grep SPEEDSTEP /boot/config-2.6.18-1.2849.fc6 

Oh, I bet I know what this is.  I bet you've been bitten by the "installer
installs a 586 kernel by default" bug.  
See http://fedoraproject.org/wiki/Bugs/FC6Common  and see if that's the problem.

If that still doesn't get you up and running, attach dmesg, and I'll poke at it
some more.
Comment 2 Stephen Hemminger 2006-11-24 19:25:41 EST

*** This bug has been marked as a duplicate of 211941 ***

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