https://bugzilla.kernel.org/show_bug.cgi?id=216204 Hans de Goede (jwrdegoede@xxxxxxxxxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |jwrdegoede@xxxxxxxxxxxxxxxx | |g Resolution|--- |ANSWERED --- Comment #1 from Hans de Goede (jwrdegoede@xxxxxxxxxxxxxxxxx) --- Sorry for the slow reply. Note the kernel now allows enabling V4 DYTC support from the kernel commandline, by passing: ideapad_laptop.allow_v4_dytc=1 on the kernel commandline. As for testing this: 1. Pass the kernel cmdline parameter 2. Check that switching the profile in GNOME results in the contents of /sys/firmware/acpi/platform_profile changing 3. Run a heavy workload, e.g. a make -j8 kernel compile 4. Monitor the power-consumption in powertop (while running from battery) 5. Change the profile Step 5. should then result in significant changes of consumed power (this may take some minutes to register). Without platform_profile support the GNOME setting only changes the pstate governer profile, so things will ramp up slower. The actual platform_profile setting should change the RAPL values / should change the maximum energy consumption (programmable TPD) of the processor. Note that this may only take effect when combined with running thermal-profiled with the experimental Intel DPTF support enabled. Since there is not really a bug to fix here I'm going to close this bug report now. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
