i have this problem with kernel 4.0-rc6 and a amd c-60 (there is a bug
on the kernel.org bugzilla somewhere but i lost it) , ive attached a
log of turbostat running and this is the cpufreq-info output of one
core:
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 4294.55 ms.
hardware limits: 800 MHz - 1000 MHz
available frequency steps: 1000 MHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 800 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz (asserted by call to hardware).
cpufreq stats: 1000 MHz:5,31%, 800 MHz:94,69% (27776)
** Attachment added: "turbostat.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877877/+attachment/4364377/+files/turbostat.log
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https://bugs.launchpad.net/bugs/877877
Title:
AMD Turbo Core not working on 11.10
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