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Old 10-24-2004, 07:53 AM   #1
Registered: Mar 2004
Location: Singapore
Distribution: Mandrake Linux 10.1 CE, Fedora Core 3 T3, Adios
Posts: 42

Rep: Reputation: 15
2.4.x kernel and speed-stepping?


I'm running MDK 9.2 (2.4.22 kernel) on my IBM R40 Centrino laptop. Just wondering if I can do speed-stepping with this kernel? modprobe speedstep_centrino failed. But I get the following ouput when I do cat /proc/cpufreq and /proc/cpuinfo

[root@205-87 proc]# cat cpufreq
minimum CPU frequency - maximum CPU frequency - policy
CPU 0 600000 kHz ( 46 %) - 1300000 kHz (100 %) - performance

[root@205-87 proc]# cat cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 9
model name : Intel(R) Pentium(R) M processor 1300MHz
stepping : 5
cpu MHz : 1295.832
cache size : 0 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 tm pbe tm2 est
bogomips : 2588.67

Does this mean my processor is being speedstepped already? But, my battery performance is still 50% (2.5 hrs) of what Win XP (4.5+ hrs) used to offer previously. If not its being speedstepped already, what should I do? I read about using cpufreqd and other daemons like nopowerond, etc. What are they for?

I cannot use 2.6.x bcos of installation problems with my university's vpn client.
Old 10-24-2004, 09:39 AM   #2
Senior Member
Registered: Jul 2003
Location: Indiana
Distribution: Suse 6.0+, Mandrake 5.0-10.0, Redhat 6.0-9.0, Gentoo 1.2+, Gnoppix, Knoppix, Sabayon, Ubuntu 5.04+
Posts: 1,811

Rep: Reputation: 45
No matter what nifty little features and battery life your trying to get out of it... just, upgrade the kernel first? That's always a good step...


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