I found a solution with 'acpi=off'.
Now show the correct cpu MHz but doesn't work Frequency Scaling.
:~$ sudo dmidecode -t processor | grep Speed
Max Speed: 2700 MHz
Current Speed: 3051 MHz
:~$ dmesg | grep MHz
[ 0.000000] tsc: Detected 3033.877 MHz processor
vagrale@vagrale-desktop:~$ lscpu | grep MHz
CPU MHz: 3033.877
:~$ cpupower -c all frequency-info
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
CPUs which run at the same hardware frequency: Not Available
CPUs which need to have their frequency coordinated by software: Not Available
maximum transition latency: Cannot determine or is not supported.
hardware limits: Not Available
available cpufreq governors: Not Available
Unable to determine current policy
current CPU frequency: Unable to call hardware
current CPU frequency: Unable to call to kernel
boost state support:
Supported: no
Active: no
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
CPUs which run at the same hardware frequency: Not Available
CPUs which need to have their frequency coordinated by software: Not Available
maximum transition latency: Cannot determine or is not supported.
hardware limits: Not Available
available cpufreq governors: Not Available
Unable to determine current policy
current CPU frequency: Unable to call hardware
current CPU frequency: Unable to call to kernel
boost state support:
Supported: no
Active: no
:~$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 6
model name : AMD Athlon(tm) X2 215 Processor
stepping : 2
microcode : 0x10000c7
cpu MHz : 3033.877
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid eagerfpu
pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate vmmcall npt lbrv
svm_lock nrip_save
bugs : tlb_mmatch apic_c1e fxsave_leak sysret_ss_attrs
bogomips : 6067.75
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 1
vendor_id : AuthenticAMD
cpu family : 16
model : 6
model name : AMD Athlon(tm) X2 215 Processor
stepping : 2
microcode : 0x10000c7
cpu MHz : 3033.877
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid eagerfpu
pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate vmmcall npt lbrv
svm_lock nrip_save
bugs : tlb_mmatch apic_c1e fxsave_leak sysret_ss_attrs
bogomips : 6067.75
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
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https://bugs.launchpad.net/bugs/379873
Title:
CPU Frequency Scaling Monitor reports incorrect CPU speeds when
overclocked
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