ACPI CPU thread locking at full speed

themacmeister · 2014-12-31 11:24:52

I just installed Mint Linux 17 XFCE, and I am shocked to find that my new Core i7 2600k seems to be locking a random processor thread at full (non-turbo) speed.

As an example, set on ONDEMAND, one thread will remain at 3.4GHz while others fall back to 1.6GHz (like they should), and my radiator fan and pump go crazy (sounds like full speed).

The CPU works perfectly under Win7 64bit.

Just wondering what could be causing this? It is very annoying.

I have found a one line command that will set all the cores manually

for cpu in 0 1 2 3 4 5 6 7; do cpupower -c $cpu frequency-set -g powersave; done

, but I would prefer that ONDEMAND worked as expected (and not have to revert to setting POWERSAVE while idling).

Any advice or guidance would be most appreciated. I am reasonably well versed in Linux (have used it since RedHat 5), but I don't keep up to speed with new technologies or software.

Cheers.

Last edited by themacmeister (2014-12-31 11:25:45)

sixsixfive · 2014-12-31 11:59:57

cpufeq isn't recommend by intel anymore because they have now their own ( https://www.kernel.org/doc/Documentatio … pstate.txt )that knows only performance & powersave as governors

you could try powertop which should show any misconfiguration, but since this is totally unreleated to Xfce and a distribution specific issue you should ask for help/support on the linux mint forums: http://forums.linuxmint.com

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#1 2014-12-31 11:24:52

ACPI CPU thread locking at full speed

#2 2014-12-31 11:59:57

Re: ACPI CPU thread locking at full speed

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