Reverting back to a Ubuntu 3.0 kernel works fine!
$cat /proc/version_signature
Ubuntu 3.0.0-17.30-generic 3.0.22
$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: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 1.87 GHz
available frequency steps: 1.87 GHz, 1.60 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 1.60 GHz and 1.87 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1.87 GHz.
cpufreq stats: 1.87 GHz:75.13%, 1.60 GHz:24.87% (4778)
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 1.87 GHz
available frequency steps: 1.87 GHz, 1.60 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 1.60 GHz and 1.87 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
cpufreq stats: 1.87 GHz:72.79%, 1.60 GHz:27.21% (4691)
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https://bugs.launchpad.net/bugs/962947
Title:
CPU scaled back to very slow speed, cannot increase speed
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