I have a problem with CPU over "ondemand" governor on Kubuntu 12.04 Precise
Pangolin, but I'm not sure if this is related with that report.
CPU AMD Athlon X2 4800+ under "powernow-k8" driver. Tested with
3.2.0-24-generic Kernel, and 3.3.6 Kernel from this PPA:
https://launchpad.net/~upubuntu-com/+archive/kernel
The problem is that my CPU constantly running at full speed over "ondemand"
governor (2.50 GHz) even the CPU usage is low , with a consequent increase in
temperature. This problem did not occur in Kubuntu 11.10 Oneiric, which under
"ondemand" CPU cores running at 1000 MHz when CPU usage is low and frecuency
increased when required. Therefore, the CPU temperature remains lower in
Oneiric.
I set "conservative" as governor with cpufreq-set, but CPU is always running
at full speed too.
Whatever governor I choose, only allows higher frequency(not scaling allowed):
current policy: frequency should be within <"2.50 GHz and 2.50 GHz">.
The governor "ondemand" may decide which speed to use
within this range.
$ cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: powernow-k8
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 0 1
maximum transition latency: 109 us.
hardware limits: 1000 MHz - 2.50 GHz
available frequency steps: 2.50 GHz, 2.40 GHz, 2.20 GHz, 2.00 GHz, 1.80 GHz,
1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 2.50 GHz and 2.50 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 2.50 GHz.
cpufreq stats: 2.50 GHz:99,95%, 2.40 GHz:0,00%, 2.20 GHz:0,00%, 2.00
GHz:0,00%, 1.80 GHz:0,00%, 1000 MHz:0,05% (2)
analyzing CPU 1:
driver: powernow-k8
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 0 1
maximum transition latency: 109 us.
hardware limits: 1000 MHz - 2.50 GHz
available frequency steps: 2.50 GHz, 2.40 GHz, 2.20 GHz, 2.00 GHz, 1.80 GHz,
1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 2.50 GHz and 2.50 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 2.50 GHz.
cpufreq stats: 2.50 GHz:99,95%, 2.40 GHz:0,00%, 2.20 GHz:0,00%, 2.00
GHz:0,00%, 1.80 GHz:0,00%, 1000 MHz:0,05% (2)
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https://bugs.launchpad.net/bugs/987531
Title:
cpufreq si not working properly
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