in v4.5 and earlier intel-pstate downscaled idle processors (load 0.1-0.2%) to minumum frequency, in my case 800MHz. Now in v4.6-rc1 the characteristic has dramatically changed. If in idle the processor frequency is more or less a few MHz around 2500Mhz. This is the maximum non turbo frequency. No difference between powersafe or performance governor. I currently use acpi_cpufreq which works as usual. Processor: Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz (family: 0x6, model: 0x3c, stepping: 0x3) Last known good kernel is: 4.5.0-01127-g9256d5a First known bad kernel is: 4.5.0-02535-g09fd671 There is commit 277edba Merge tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm in between, which brought a few changes in intel_pstate. thanks, Jörg -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
