Bug 217182

Summary:	speedstep centrino support not enabled in kernel
Product:	[Fedora] Fedora	Reporter:	Stephen Hemminger <shemminger>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6	CC:	wtogami
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-11-25 00:25:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Stephen Hemminger 2006-11-24 18:56:57 UTC

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):
2.6.18-1.2849.fc6

How reproducible:
100%

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 21:48:31 UTC

Hrmm.

$ grep SPEEDSTEP /boot/config-2.6.18-1.2849.fc6 
CONFIG_X86_SPEEDSTEP_CENTRINO=y

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 2006-11-25 00:25:41 UTC


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