Invalid detection CPU frequency ?

Vladimir Grebenschikov vova at sw.ru
Mon Sep 26 23:06:48 PDT 2005


Hi

It looks strange but sometimes my notebook start on full-speed (1.7GHz)
and sysctls output looks like:

dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 1687
dev.cpu.0.freq_levels: 1687/-1 1476/-1 1265/-1 1054/-1 843/-1 632/-1 421/-1 210/-1
dev.acpi_throttle.0.%desc: ACPI CPU Throttling
dev.acpi_throttle.0.%driver: acpi_throttle
dev.acpi_throttle.0.%parent: cpu0
dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/-1 3750/-1 2500/-1 1250/-1
dev.acpi_sony.0.brightness: 8
dev.acpi_sony.0.ctr: 0
dev.acpi_sony.0.pcr: 0
dev.acpi_sony.0.wdp: 1281
dev.acpi_sony.0.cdp: 1
dev.acpi_sony.0.%desc: Sony notebook controller
dev.acpi_sony.0.%driver: acpi_sony
dev.acpi_sony.0.%location: handle=\_SB_.PCI0.LPCB.SNC_
dev.acpi_sony.0.%pnpinfo: _HID=SNY5001 _UID=0
dev.acpi_sony.0.%parent: acpi0

And sometimes it starts on low speed (~500 Mhz)
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 595
dev.cpu.0.freq_levels: 595/-1 520/-1 446/-1 371/-1 297/-1 223/-1 148/-1 74/-1
dev.acpi_throttle.0.%desc: ACPI CPU Throttling
dev.acpi_throttle.0.%driver: acpi_throttle
dev.acpi_throttle.0.%parent: cpu0
dev.acpi_throttle.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/-1 3750/-1 2500/-1 1250/-1
dev.acpi_sony.0.brightness: 8
dev.acpi_sony.0.ctr: 0
dev.acpi_sony.0.pcr: 0
dev.acpi_sony.0.wdp: 1281
dev.acpi_sony.0.cdp: 1
dev.acpi_sony.0.%desc: Sony notebook controller
dev.acpi_sony.0.%driver: acpi_sony
dev.acpi_sony.0.%location: handle=\_SB_.PCI0.LPCB.SNC_
dev.acpi_sony.0.%pnpinfo: _HID=SNY5001 _UID=0
dev.acpi_sony.0.%parent: acpi0

And speed can't be raised by powerd or other.
Looks like it happens when notebook stats or shutdowns on batteries.
Rebooting on AC power cures situation. But anyway - I do not think it is normal.

Any suggestions ? 

I run 7-CURRENT here (19 Sep 05).

powerd also enbled with default setup:
% fgrep powerd /etc/rc.conf
powerd_enable="YES"     # Run powerd to lower our power usage.
%

-- 
Vladimir B. Grebenschikov
SWsoft Inc. vova at swsoft.com


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