Bug#774199: linux-image-3.16.0-0.bpo.4-amd64: most cpufreq governors newly unavailable
Package: src:linux
Version: 3.16.0-0.bpo.4
On my other system, which is a laptop, with linux-image-3.2.0-4-amd64
cpufrequtils starts correctly out of the box, and the contents of
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors is:
powersave userspace conservative ondemand performance
But with linux-image-3.16.0-0.bpo.4 booted on the same machine,
I get the dreaded message
"Setting ondemand CPUFreq governor...disabled, governor not available"
and indeed, scaling_available_governors contains just
powersave performance
So this looks on the face as a kernel regression, although many other
suspects come to mind as well.
The machine is a Dell XPS with a 4-way Intel Core i7-3571U. Let me know
if I can provide any more useful information.
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