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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sysvinit in Ubuntu. https://bugs.launchpad.net/bugs/1314653 Title: sysvinit: default cpufreq governor to powersave for intel-pstate driver Status in sysvinit package in Ubuntu: Fix Released Status in sysvinit source package in Trusty: Fix Released Status in sysvinit source package in Utopic: Fix Released Bug description: When defaulting to the intel-pstate driver, there are only a couple of cpufreq governors available, none of which are handled in the /etc/init.d/ondemand script. Since this driver is meant to be used for power saving, it seems wrong to leave the system in the kernel default configured "performance" governor after boot, so I think it is pertinent to set this to "powersave" if it is the only suitable non-power hungry governor available. How to reproduce: 1. enable the intel_pstate driver on a recent Intel machine (Sandybridge or above) edit /etc/default/grub, modify the following: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_pstate=enable" and run: sudo update-grub and reboot. 2. login 3. wait at least 60 seconds for /etc/init.d/ondemand to complete check out the default cpufreq governor, you will see it is still set to the boot default of "performance": cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor With the attached fix the system will boot into a less aggressive cpufreq governor. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sysvinit/+bug/1314653/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
