https://bugzilla.kernel.org/show_bug.cgi?id=83151 Bug ID: 83151 Summary: Intel Turbo can't be disabled/enabled under certain condictions Product: Power Management Version: 2.5 Kernel Version: 3.16 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq Assignee: cpufreq@xxxxxxxxxxxxxxx Reporter: gabriele.mzt@xxxxxxxxx Regression: No On my laptop (Dell XPS 13 9333) MSR_IA32_MISC_ENABLE_TURBO_DISABLE is 0 when AC is present, 1 otherwise. Because of this, setting turbo_disabled on init leads to some issues: * If I turn on the laptop while the AC is present, the sysfs interface always allows me to change the state of no_turbo. However, the changes are only effective when the AC is present. * If I turn on the laptop while on battery, the sysfs interface doesn't allow me to change the state of no_turbo. That means I'm not able to disable it when it's automatically enabled when I plug the AC. Note that I don't have the possibility to disable Intel Turbo from the BIOS settings. -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
