Bug 217182

Summary: speedstep centrino support not enabled in kernel
Product: [Fedora] Fedora Reporter: Stephen Hemminger <shemminger>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2006-11-24 19:25:41 EST Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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 ***