CPU frequency doesn't drop below 1200MHz (like it used to)

[Kimmo Paasiala]

On Fri, May 22, 2015 at 10:42 AM, Ivan Klymenko <fidaj at ukr.net> wrote:
> Fri, 22 May 2015 09:33:15 +0200
> Nikos Vassiliadis <nvass at gmx.com> написав:
>
>> Hi,
>>
>> I just noticed that my CPU's frequency doesn't support dropping
>> below 1200MHz. It used to be able to go down to 150MHz, if I am
>> not mistaken. I'd like it to go down to 600MHz via powerd, like
>> it used to go. This is a month's old 10-STABLE.
>>
>> > [nik at moby ~]$ sysctl dev.cpu.0.freq_levels
>> > dev.cpu.0.freq_levels: 2400/35000 2300/32872 2200/31127 2100/29417
>> > 2000/27740 1900/26096 1800/24490 1700/22588 1600/21045 1500/19534
>> > 1400/18055 1300/16611 1200/15194
>>
>> This is the CPU:
>>  > hw.model: Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
>>
>> Thanks in advance for any ideas,
>> Nikos
>
> Try changing the options in /boot/device.hints
> hint.acpi_throttle.0.disabled="0"
> hint.p4tcc.0.disabled="0"

Thanks, those also fixed powerd(8) for me that stopped working after
upgrading to stable/10 from releng/10.1. Why are those setting
suddenly needed now?

-Kimmo