If the intel_pstate scaling driver is "active" then "powersave" is the default governor. If the driver "passive" or the is the acpi-cpufreq driver during boot, then the default governor will be "ondemand". Note that "active-powersave" is crudely the equivalent of "passive-ondemand". You can eliminate these default settings by stopping and disabling the "ondemand" service. Without the service, the governor will be as defined by the kernel configuration file or the grub command line. Recently, Ubuntu has changed to "schedutil" as the default in the kernel configuration.
$ grep CONFIG_CPU_FREQ_DEFAULT /boot/config-5.11.0-40-generic # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL=y For these "few minutes" you mention, please run a load, for example "$ yes > /dev/null", while at the same time running the following turbostat command in another terminal: sudo turbostat --Summary --quiet --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,RAMWatt,GFXWatt,CorWatt --interval 10 And check all operating parameters after the slow down looking for any limiting change. Post the turbostat output here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1945221 Title: CPU frequency stuck at minimum value..again Ubuntu 20.04.3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thermald/+bug/1945221/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
