Bug 8839

I just read somewhere that powernow_k8 has been deprecated in kernel since kernel 3.7. It has been replaced by acpi_cpufreqd. Please post the output of "cpupower frequency-info".

CC: (none) => philippe.l

sorry that would be acpi_cpufreq without the "d".

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Status: NEW => RESOLVED
Resolution: (none) => OLD

Seems this issue still persists or came back. With acpi-cpufreq, and the default governor being set to ondemand, affected CPU is Phenom II 720 and it seems to have worked OK with mga3 and mga4. Check https://forums.mageia.org/en/viewtopic.php?f=7&t=9801

FWIW, the wiki article about cpupower that mentions powernow_k8 to be deprecated in favour of acpi-cpufreq is this one:
https://wiki.archlinux.org/index.php/CPU_frequency_scaling#CPU_frequency_driver
I wonder why we still have it as kernel module if it's deprecated?

Anyways, the CPU is running at full speed by default due to the performance governor, and that's a bad thing and a regression compared to mga4.

Status: RESOLVED => REOPENED
CC: (none) => doktor5000
Version: 2 => Cauldron
Resolution: OLD => (none)

(In reply to Florian Hubold from comment #5)
> Anyways, the CPU is running at full speed by default due to the performance
> governor, and that's a bad thing and a regression compared to mga4.

According to bug 13368 and bug 14584 this is expected and required for Intel CPU's, as those do only support performance or powersave, and cpufreq service will fail if something else is set. Hence performance is the default.

So we need an Errata entry for the default cpufreq governor being "performance" and AMD CPU users might need to switch that actively to "ondemand".
In effect similar to https://wiki.mageia.org/en/Mageia_2_Errata#Powersaving_features_not_enabled_by_default_on_AMD_E2_.28brazos.29_CPU.27s but slightly different wording.

Added https://wiki.mageia.org/en/Mageia_5_Errata#default_cpufreq_governor_is_performance.2C_some_.5BAMD.5D_users_might_need_to_switch_to_ondemand

*** This bug has been marked as a duplicate of bug 14584 ***

Status: REOPENED => RESOLVED
Resolution: (none) => DUPLICATE
Whiteboard: MGA5TOO => INERRATA