Mandrake 10 on Dell D600 reports slow CPU Freq

[Guest joyhaa]

I installed Mandrake 10 official to Dell D600 laptop(Pentium M 1600Mhz), it runs just fine and I like it.

 

However, I found sometimes the CPU freq is shown only at 600Mhz(instead of 1600Mhz), I'm using the 2.6.3 kernel:

 

$uname -a

Linux joyhaa 2.6.3-7mdk #1 Wed Mar 17 15:56:42 CET 2004 i686 unknown unknown GNU/Linux

 

$cat /proc/cpuinfo

processor : 0

vendor_id : GenuineIntel

cpu family : 6

model : 9

model name : Intel® Pentium® M processor 1600MHz

stepping : 5

cpu MHz : 599.640 <----?????

cache size : 1024 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 sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 tm pbe tm2 est

bogomips : 1187.84

 

 

any insights?

 

TIA

[liquidzoo]

Check the file /proc/acpi/Processor/CPU0/throttling

 

See what you have in there. I'd be willing to bet that your cpu has been throttled inadvertantly. Post the output of

cat /proc/acpi/Processor/CPU0/throttling

here so we can see this file. If it has been throttled, there's an easy fix for it.

[Guest joyhaa]

here is the output:

 

$cat /proc/acpi/processor/CPU0/throttling

state count: 8

active state: T0

states:

*T0: 00%

T1: 12%

T2: 25%

T3: 37%

T4: 50%

T5: 62%

T6: 75%

T7: 87%

 

 

$chkconfig --list | grep cpi

acpi 0:off 1:off 2:on 3:on 4:on 5:on 6:off

acpid 0:off 1:off 2:off 3:on 4:on 5:on 6:off

 

i did see 1.6Ghz on /proc/cpuinfo a couple of times before...wierd

 

thanks.

[Guest joyhaa]

ok, i figured out how to fix it:

 

vi /etc/init.d/acpi

 

add "speedstep_centrino" to MODULES list(the 10th line).