[Testing Update] 2022-06-03 - Linux 5.18, Systemd 251, GNOME 42.2, NVIDIA, Mesa, Pulseaudio, Perl

Zesko · 4 June 2022 09:16

Same issue for me too. But there is the bug/error in the log when using amd-pstate for Linux Kernel 5.17:

That is why I disabled amd-pstate.

I do not notice what is difference between amd_pstate and acpi-cpufreq.

stephane · 4 June 2022 09:22

about this point , UEFI motherboard has both options for CPU ZEN2+
for acpi-cpufreq you cant go under 2200mhz , it mean even in idle , so not good for any laptop
for amd-pstate , cppc will use sequence order cpu to use the number core with lower temp and can go to lower frequency 550Mhz , better for any laptop

pheiduck · 4 June 2022 09:59

Maybe you forgot to add initcall_blacklist=acpi_cpufreq_init to grub.

Hanzel · 4 June 2022 10:11

I do not have to set this variable to get evolution to adhere to my chosen dark theme. I’m not sure why.

In tweaks I have set the shell and legacy applications to use adwaita-maia-compact-dark theme.

Zesko · 4 June 2022 10:40

adwaita-maia-compact-dark theme works, but other default dark themes e.g. Matcha-dark-aliz do not work with it.
But the old version of evolution 3.44.1-1 works fine with these different themes.

Zesko · 4 June 2022 10:47

It does not work.

❯ sudo cpupower frequency-info    
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU

Does it work for you?

stephane · 4 June 2022 10:51

same result on 5.18.1 , lost acpi-cpufreq with this blacklist option

Zesko · 4 June 2022 10:57

How to enable amd_pstate for AMD Zen 2+ and Linux Kernel 5.17 or 5.18 only

Edit /etc/mkinitcpio.conf to add

MODULES=(amd_pstate)

sudo mkinitcpio -P linux
Edit /etc/default/grub to add it in GRUB_CMDLINE_LINUX_DEFAULT:

amd_pstate.shared_mem=1

sudo update-grub
reboot.
Enable CPPC in BIOS setting.

It works for me in Linux Kernel 5.18:

❯ sudo cpupower frequency-info                                                                                                                                                                                            
analyzing CPU 0:
  driver: amd-pstate

❯ modinfo amd_pstate
filename:       /lib/modules/5.18.1-1-MANJARO/kernel/drivers/cpufreq/amd_pstate.ko.xz
license:        GPL
description:    AMD Processor P-state Frequency Driver
author:         Huang Rui <ray.huang@amd.com>
srcversion:     39739A8C79AAB14F2C15670
depends:        
retpoline:      Y
intree:         Y
name:           amd_pstate
vermagic:       5.18.1-1-MANJARO SMP preempt mod_unload

stephane · 4 June 2022 11:14

it ok with kernel and added in module for mkinitcpio.conf for kernels 5.17 & 5.18 ,
amd_pstate is not in kernel 5.15 LTS and 5.10 LTS

Jaypee · 4 June 2022 11:26

And this doesn’t require editing your GRUB config file?

Zesko · 4 June 2022 11:33

GRUB config file adds only amd_pstate.shared_mem=1 in GRUB_CMDLINE_LINUX_DEFAULT

You do not need to add amd_pstate.enable=1

Jaypee · 4 June 2022 11:36

Yup, my CPU needs the shared memory solution. Some of the newest Ryzen CPUs (mostly mobile) work with amd_pstate.enable=1.

pheiduck · 4 June 2022 11:46

because amd_pstate was / is hyped.:
watch this Video on YT: René gave good informations about this new driver:

And as I understand it right its developed for notebooks (mobile) not desktop AMD CPUs.

Jaypee · 4 June 2022 11:52

My power states didn’t change, though hardware limits would now allow dropping clocks down to 550 MHz:

analyzing 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: 131 us
  hardware limits: 550 MHz - 4.65 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 550 MHz and 4.65 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 2.93 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    Boost States: 0
    Total States: 3
    Pstate-P0:  3700MHz
    Pstate-P1:  2800MHz
    Pstate-P2:  2200MHz

The three states are identical with what acpi-cpufreq provides.
My AGESA version is 1.2.0.7, so the motherboard is up-to-date. CPU is 5600X
Here’s one example of 5800X from the internet:

analyzing 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: 131 us
  hardware limits: 550 MHz - 4.93 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 550 MHz and 4.93 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 903 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    AMD PSTATE Highest Performance: 166. Maximum Frequency: 4.93 GHz.
    AMD PSTATE Nominal Performance: 128. Nominal Frequency: 3.80 GHz.
    AMD PSTATE Lowest Non-linear Performance: 59. Lowest Non-linear Frequency: 1.75 GHz.
    AMD PSTATE Lowest Performance: 19. Lowest Frequency: 550 MHz.

pheiduck · 4 June 2022 12:01

facing this as well I switch back to acpi-cpufreq

Zesko · 4 June 2022 12:39

Just ignore the first line current CPU frequency: that is for maybe Intel?
But we have the second same line:

  current CPU frequency: Unable to call hardware
  current CPU frequency: 1.33 GHz (asserted by call to kernel)

See: 1.33 GHz is lower than constant / standard 2,2 GHz of acpi-cpufreq in idle.
That means amd_pstate actually works.

pheiduck · 4 June 2022 14:39

And neofetch also shows a strange base clock of 4.6xx instead of the default when using amd_p-state.

Zesko · 4 June 2022 14:51

@pheiduck and @Jaypee

I did not use neofetch

I checked KDE System Monitor that measures CPU frequencies when using idle.

Using acpi-cpufreq

Every core runs always 2,1 GHz+

VS.

Using AMD Pstate:

Every core runs 550 MHz+ that changes much flexible.

You can see both are different when using idle.

Jaypee · 4 June 2022 14:54

I’ve never used neofetch; I use watch -n1 cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq, similar to what many frequency monitoring applications do.

Edit: Wow… I just noticed that that watch is causing the threads to “idle” at 2.9 Ghz instead of 550 Mhz

Edit: Seems the states just work now(?!) (compare to my previous post)

analyzing 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: 131 us
  hardware limits: 550 MHz - 4.65 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 550 MHz and 4.65 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 2.94 GHz (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.

Yochanan · 4 June 2022 15:55

Sure it does. Use a compatible theme like Adw-dark. Also install the Legacy (GTK3) Theme Scheme Auto Switcher (gnome-shell-extension-legacy-theme-auto-switcher) GNOME Shell Extension and both Libadwaita and legacy applications will automatically switch themes.

That is neither necessary nor supported.