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In 10.10, I remember I had CPU Frequency Scaling Monitor by default. Now in 12.04, I cannot find anything similar in Ubuntu software center. I wonder what applications are recommended for scaling CPU frequency in 12.04, and how to get and install them?

Thanks and regards!

20

indicator-cpufreq can be found in the Software Center by searching "cpu frequency" and then clicking on the "show technical items" option:

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And this is what it looks like, to compare what you were used to in 10.04:

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  • Note that you may need to put it in startup if you don't wish to start it manually every time -- usually it should go into Startup Applications automatically, like this:

enter image description here

  • Thanks! I found and installed it. My laptop has two cores. indicator-cpufreq seems just give options for one core, or the options are for both cores? In 10.10, I have two identical groups of choices, each group for each core. – Tim May 27 '12 at 1:58
  • I believe the options are for both cores, i.e. it will set both cores at the same time to the same parameters. You would need to use cpufrequtils from the terminal if you want finer per-core control. – ish May 27 '12 at 2:00
  • I wonder if it is possible to show real-time CPU frequency? In 10.10, the CPU frequency monitor can both show it and scale it. – Tim May 27 '12 at 11:59
  • I also found that after restart, the setting of CPU frequency is back to "on demand". Can I set it once until I change it by myself? – Tim May 28 '12 at 22:57
4

I use indicator-cpufreq on Unity. It seems very parallel to what I use with 10.10. You can install it using

sudo apt-get install indicator-cpufreq
  • Thanks! I cannot find Unity. Where is it? – Tim May 27 '12 at 0:57
  • I searched it on unity.ubuntu.com, but it is not found. – Tim May 27 '12 at 1:06
  • Unity is just the user interface (by default) on 12.04. – John S Gruber May 27 '12 at 4:56
2

This what I use to set the frequency of CPU in Ubuntu 12.04.

If you want to have control of CPU frequency in Ubuntu 12.04, do this:

  • open Ubuntu software center or synaptic software manager
  • Install awn-settings (this is a dock)
  • Now open awn settings and set to start-awn automatically
  • Restart computer
  • Now you must have the dock on the bottom of desktop
    • Right click Dock preferences
    • Go on to Applets tab.
    • In the Categories section select Monitor and from right section Available Applets double click on CPU Frequency monitor to add on dock.
2

I did a little bit of research and found this thread on Ubuntu Forums that explains how to use cpulimit to set the maximum consumption for a particular process. It runs as a daemon that will monitor all processes.

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