cpu is always running at maximum performance

[George Kilian]

Hi,

I have an Acer Aspire TimelineX 4830TG (Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz) with Ubuntu 11.10 64bit, 3.0.0-13-generic.

Unfortunately I have a heating problem. It seems that all 4 CPUs are running on full speed all the time.

cpufreq-info tells me that the governor changes to "ondemand", as it should be. Also it tells me

analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1 2 3
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 10.0 us.
  hardware limits: 800 MHz - 2.70 GHz
  available frequency steps: 2.70 GHz, 2.70 GHz, 2.20 GHz, 2.00 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz, 1.20 GHz, 1000 MHz, 800 MHz
  available cpufreq governors: conservative, ondemand, userspace, powersave, performance
  current policy: frequency should be within 2.70 GHz and 2.70 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 2.70 GHz.
  cpufreq stats: 2.70 GHz:99.62%, 2.70 GHz:0.00%, 2.20 GHz:0.00%, 2.00 GHz:0.00%, 1.80 GHz:0.00%, 1.60 GHz:0.00%, 1.40 GHz:0.01%, 1.20 GHz:0.01%, 1000 MHz:0.01%, 800 MHz:0.34% (44)

The current policy concerns me: "frequency should be within 2.70 GHz and 2.70 GHz".
I am able to switch the governor, but this does not change the range of frequency (2.70GHz-2.70GHz).

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/901232/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[George Kilian (l0ki)]

I changed to Lucid and installed the 3.0.0-13-generic kernel (backports).
With this configuration I can change the CPU frequency.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Markus Naeher (kubuntu-user)]

I have the same bug occuring on Precise

[Alan Pater (alan-pater)]

Is this still a problem with current kernel versions?

[Launchpad Janitor (janitor)]

[Expired for cpufreqd (Ubuntu) because there has been no activity for 60 days.]

[Tyler Gordon (tgordon681)]

This bug affects me on Raring.

[O (o-b12)]

This bug affects me on the 13.10 version..