Kernel 6.1 and p-state

amd-pstate
not yet on 6.1 ???
Kernel 6.1.0-1 ==> loads kernel-module, but does not work
Kernel 6.0.12-1 ==> loads kernel-module, WORKS

from kernel/git/torvalds/linux.git - Linux kernel source tree

you have to add amd_pstate=passive on boot kernel

i get

sudo cpupower frequency-info 

analyse du CPU 0 :
  driver: amd-pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 20.0 us
  limitation matérielle : 550 MHz - 4.65 GHz
  régulateurs disponibles : conservative ondemand userspace powersave performance schedutil
  tactique actuelle : la fréquence doit être comprise entre 550 MHz et 4.65 GHz.
                  Le régulateur "schedutil" est libre de choisir la vitesse
                  dans cette plage de fréquences.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 550 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    AMD PSTATE Highest Performance: 166. Maximum Frequency: 4.65 GHz.
    AMD PSTATE Nominal Performance: 132. Nominal Frequency: 3.70 GHz.
    AMD PSTATE Lowest Non-linear Performance: 62. Lowest Non-linear Frequency: 1.73 GHz.
    AMD PSTATE Lowest Performance: 20. Lowest Frequency: 550 MHz.

sudo turbostat
turbostat version 2022.07.28 - Len Brown <lenb@kernel.org>

CPUID(0): AuthenticAMD 0x10 CPUID levels
CPUID(1): family:model:stepping 0x19:21:0 (25:33:0) microcode 0x0
CPUID(0x80000000): max_extended_levels: 0x80000023
CPUID(1): SSE3 MONITOR - - - TSC MSR - HT -
CPUID(6): APERF, No-TURBO, No-DTS, No-PTM, No-HWP, No-HWPnotify, No-HWPwindow, No-HWPepp, No-HWPpkg, No-EPB
CPUID(7): No-SGX No-Hybrid
RAPL: 234 sec. Joule Counter Range, at 280 Watts
/dev/cpu_dma_latency: 2000000000 usec (default)
current_driver: acpi_idle
current_governor: menu
current_governor_ro: menu
cpu1: POLL: CPUIDLE CORE POLL IDLE
cpu1: C1: ACPI FFH MWAIT 0x0
cpu1: C2: ACPI IOPORT 0x414
cpu1: cpufreq driver: amd-pstate
cpu1: cpufreq governor: schedutil
cpufreq boost: 1
cpu0: MSR_RAPL_PWR_UNIT: 0x000a1003 (0.125000 Watts, 0.000015 Joules, 0.000977 sec.)
4 Likes

WORKS! Thank you so much!

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