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0===d[e]&&(d[e]=f.needsContext?n(e,this).index(i)>-1:n.find(e,this,null,[i]).length),d[e]&&d.push(f);d.length&&g.push({elem:i,handlers:d})}return h ]","i"),va=/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi,wa=/
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+
I have 2nd gen Intel i7 laptop. I use Thermald and tlp for managing
+battery life (they are great!). However, sometimes I don't care about
+noise and power consumption, and want the CPU to run at full 3.5GHz. For
+ some reason, this seems impossible to achieve. The fan never runs full
+speed, and the processor is always throttled down. When I use
+cpufreq-info I never see more than 2.8GHz (so turbo boost does not
+work), and the frequency drops down to 800Mhz when the fan starts
+getting "loud". This is with intel p-state and performance governor.
+Powersafe governor is even "worse", but that's good as it increases
+battery life.
+
+
Any ideas how to enable "full power"?
+
+
Thank you!
+
+
+
+
+
+
+
+
+
+
+ asked Mar 1 '15 at 21:34
+
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+
Yes, all you have to do is:
+
+
first, set tlp "governer" to performance for both ac and batt in your
+ /etc/default/tlp file and while you are there, go ahead and enable
+turbo boost as well
+
+
then, edit /etc/default/grub and insert
+
+
intel_pstate=disable
+
+
+
after
+
+
GRUB_CMDLINE_LINUX_DEFAULT=
+
+
+
like this example
+
+
GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=disable quiet splash"
+
+
+
execute this command to apply the change to grub
+
+
sudo update-grub
+
+
+
then, install indicator-cpufreq
+
+
sudo apt-get update
+sudo apt-get install indicator-cpufreq
+
+
+
reboot for your changes to take effect.
+
+
After you reboot, you will see an icon on your unity panel, click on
+this icon and you can set the cpu to performance (full), ondemand (only
+when needed), powersave, or conservative.
+
+
+
+
Disabling pstate may not be necessary, you can try it on and off to
+see if there is a difference. Make sure to update grub after making that
+ change.
+
+
Also, indicator-cpufreq will not allow changes with pstate on (only
+with pstate disabled), you will still have to do that manually.
+
+
Finally, you can get better numbers from i7z:
+
+
sudo apt-get install i7z
+
+
+
and then, run
+
+
sudo i7z
+
+
+
+
+
Install lm-sensors and run sensors detect:
+
+
sudo apt-get install lm-sensors
+
+sudo sensors-detect
+
+
+
Follow the prompts and select yes to everything.
+
+
+
+
finally, these links may help:
+
+
http://www.webupd8.org/2013/09/adobe-flash-player-hardware.html
+
+
Not only does this allow hardware acceleration for flash but installs VDPAU and i965
+
+
http://www.webupd8.org/2014/01/enable-hardware-acceleration-in-chrome.html
+
+
and these more recent benchmarks show a slight advantage from disabling pstate and using performance
+
+
http://www.phoronix.com/scan.php?page=article&item=intel_5960x_pstate&num=2
+
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+
+
+
+ answered Mar 1 '15 at 21:44
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+
+
mchid
+
+ 14.9k 2 30 45
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I managed to figure this out. As usually, Sony decided to do things their way and so this is specific to Vaio laptops only.
+
+
To set full performance, you need to type in terminal:
+
+
echo performance | sudo tee /sys/devices/platform/sony-laptop/thermal_control
+
+
+
This sets your laptop to performance mode, and no throttling happens.
+
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+
+
+ answered Mar 5 '15 at 23:20
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+ Ask Ubuntu works best with JavaScript enabled
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