Enable intel idle

From UpWiki
Jump to: navigation, search

On a system with Ubuntu distribution installed, the default configuration should show the following when running the command:

cat /sys/devices/system/cpu/cpuidle/current_driver

If the driver in use is "acpi_idle", the following steps are necessary to enable the intel_idle driver.

BIOS settings update

We need to enable MWAIT in the BIOS With admin password:upassw0rd CRB Setup -> CRB Advanced -> CPU Configuration -> Enable Monitor Mwait, as shown below

mwait bios enable


Then boot into Ubuntu and with sudo edit (or vim) /etc/default/grub, and edit the GRUB_CMDLINE_LINUX_DEFAULT line adding

Verify MWAIT enabled

Note: NOT WORKING NOW ON UP SQUARED AND UP CORE PLUS - We are currently investigating

With the command:

cat /sys/devices/system/cpu/cpuidle/current_driver

The output now should be "intel_idle"