Hi Norman,

If you are seeing multiple frequencies supported, then you are probably 
ok. There is an issue where on some systems background activity can 
cause the system to "too easily" run at the faster speed. You can 
workaround the issue by changing this line in power.conf:

cpupm enable

to

cpupm enable poll-mode

Hope this helps, and sorry you are hitting this.

-Eric

Norman Dankert wrote:
> I got a Pentium Dual Core E5200 on a Gigabyte EG43M-S2H and installed 
> os2009.06 on it.
>
> My problem is, that it is always running at the max speed (2.5 GHz) instead 
> of switching to one of the lower frequencies, which are listed under 
> supported_frequencies.
>
> Is my CPU not supported or is there something I can do?
>
> power.conf has these two lines:
> cpupm                 enable 
> cpu-threshold         1s
>
> kstat cpu_info looks like this:
> module: cpu_info                        instance: 0     
> name:   cpu_info0                       class:    misc
>       brand                           Pentium(r) Dual-Core  CPU      E5200  @ 
> 2.50GHz
>       chip_id                         0
>       clock_MHz                       2500
>       clog_id                         0
>       core_id                         0
>       cpu_type                        i386
>       crtime                          36,640381924
>       current_clock_Hz                2500000000
>       current_cstate                  1
>       family                          6
>       fpu_type                        i387 compatible
>       implementation                  x86 (chipid 0x0 GenuineIntel 1067A 
> family 6 model 23 step 10 clock 2500 MHz)
>       model                           23
>       ncore_per_chip                  2
>       ncpu_per_chip                   2
>       pkg_core_id                     0
>       snaptime                        10476,139242704
>       state                           on-line
>       state_begin                     1245917920
>       stepping                        10
>       supported_frequencies_Hz        
> 1200000000:1600000000:2000000000:2500000000
>       supported_max_cstates           1
>       vendor_id                       GenuineIntel
>
> module: cpu_info                        instance: 1     
> name:   cpu_info1                       class:    misc
>       brand                           Pentium(r) Dual-Core  CPU      E5200  @ 
> 2.50GHz
>       chip_id                         0
>       clock_MHz                       2500
>       clog_id                         1
>       core_id                         1
>       cpu_type                        i386
>       crtime                          40,798983561
>       current_clock_Hz                2500000000
>       current_cstate                  0
>       family                          6
>       fpu_type                        i387 compatible
>       implementation                  x86 (chipid 0x0 GenuineIntel 1067A 
> family 6 model 23 step 10 clock 2500 MHz)
>       model                           23
>       ncore_per_chip                  2
>       ncpu_per_chip                   2
>       pkg_core_id                     1
>       snaptime                        10476,139826385
>       state                           on-line
>       state_begin                     1245917924
>       stepping                        10
>       supported_frequencies_Hz        
> 1200000000:1600000000:2000000000:2500000000
>       supported_max_cstates           1
>       vendor_id                       GenuineIntel
>   


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