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* cpuinfo shows wrong MHz value
@ 2009-02-14 21:17 Joerg Platte
  2009-02-14 22:29 ` Frans Pop
  0 siblings, 1 reply; 22+ messages in thread
From: Joerg Platte @ 2009-02-14 21:17 UTC (permalink / raw)
  To: linux-kernel

I'm running kernel 2.6.28.4 and /proc/cpuinfo and powertop and vmware are 
unable to detect the correct speed (1.6 GHz) of the processor:

cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 1
model name      : Intel(R) Pentium(R) 4 CPU 1.60GHz
stepping        : 2
cpu MHz         : 13000.000
cache size      : 256 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 pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pebs bts
bogomips        : 3197.21
clflush size    : 64
power management:

According to dmesg the kernel detects the CPU correctly during bootup:

Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
TSC: PIT calibration matches PMTIMER. 1 loops
Detected 1598.609 MHz processor.

IIRC this behavior started some kernels ago, I can't remember which kernel it 
was. Is it possible that the ACPI information is wrong?

regards,
Jörg

^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2009-02-20 18:42 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-02-14 21:17 cpuinfo shows wrong MHz value Joerg Platte
2009-02-14 22:29 ` Frans Pop
2009-02-14 22:38   ` Kasper Sandberg
2009-02-14 22:46     ` Frans Pop
2009-02-14 23:22       ` Joerg Platte
2009-02-15  0:02         ` Frans Pop
2009-02-15  7:00           ` Joerg Platte
2009-02-15  7:11             ` Joerg Platte
2009-02-15 16:41               ` Frans Pop
2009-02-16 14:19                 ` Thomas Renninger
2009-02-16 16:50                   ` Matthew Garrett
2009-02-16 18:13                     ` Thomas Renninger
2009-02-16 18:19                       ` Matthew Garrett
2009-02-16 18:47                         ` Thomas Renninger
2009-02-16 18:52                         ` Frans Pop
2009-02-16 19:01                           ` Matthew Garrett
2009-02-18 19:54                 ` Joerg Platte
2009-02-18 21:05                   ` Frans Pop
2009-02-19 17:03                     ` Joerg Platte
2009-02-20  2:52                       ` Frans Pop
2009-02-20 18:42                         ` Joerg Platte
2009-02-15 17:43               ` Frans Pop

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