FW 13 − Ryzen AI 9 HX 370 : CPU Governor

[c4software]

Hello,

I recently purchased a FW13 (AI 9 HX 370). In previous versions, there used to be an option to change the CPU governor.

However, I can’t seem to find this option anymore.
Is this expected?

[dhh]

You get full power using powerprofilectl. It's installed by default. And you can use Setup > Power Profile to change it. When you're plugged in, you can set it to Performance. Otherwise Balanced is good.

[c4software]

Nice ! Thanks ! this option wasn't displayed in waybar previously?

[dhh]

It was. But imo you don't change it that often. So now it lives under Setup.

[c4software]

Yes you are right 👍. Maybe just adding an indication on the battery when in performance?

[dhh]

The default Waybar battery module unfortunately doesn't have any access to powerprofilectl. So someone would have to build a new module for it.

[c4software]

I guess it's because you didn't have the package power-profiles-daemon.

[lukeofthetauri]

Power-profiles-daemon is working for me, and clicking through the profiles is reflected in powerprofilectl?

[marcinczenko]

Do you have any reference to this recommendation from AMD? From linrunner/TLP#814 it looks it is going to be supported in the upcoming kernel 6.17. I was referenced to this issue in the reply to the issue I created: linrunner/TLP#822 (comment)

[inffy]

https://knowledgebase.frame.work/en_us/optimizing-ubuntu-battery-life-Sye_48Lg3

Also from FW forums, from AMD employee Mario:
https://community.frame.work/t/tracking-ppd-v-tlp-for-amd-ryzen-7040/39423/9
https://community.frame.work/t/tracking-ppd-v-tlp-for-amd-ryzen-7040/39423/270

things might have changed regarding the TLP and if it still might interfere with amds suspend implementation. Not sure if PPD is fully maintained nowadays as few distros have already moved to TuneD with PPD-interface

[marcinczenko]

Thanks - very insightful. I guess we need to wait - lots of sound arguments from people knowing much more about it than I. I guess we need to wait till things converge...

[c4software]

Thanks for the exchange. I was wondering the same thing. I tried Fedora (GNOME) on my machine, and the battery usage seems very good. I was also wondering which package to add on Arch to achieve the same kind of optimization.

[marcinczenko]

Just realized that with recent kernel cros_charge_control seem to be functioning (which means btw that it should be possible to use tlp to control the battery). But even if you do not, the BIOS settings on new FW13 with AI 9 HX 370 to limit charge level will not be respected because they will be conflicting with cros_charge_control. I found it by tracking down the boot logs. At some point I saw this:

journalctl -b -13 | grep battery
Aug 23 02:41:09 f13-ep-0 kernel: ACPI: battery: Slot [BAT1] (battery present)
Aug 23 02:41:09 f13-ep-0 kernel: ACPI: battery: new hook: cros-charge-control.6.auto

And then the threshold files finally appear:

lsmod | grep cros
leds_cros_ec           12288  0
gpio_cros_ec           12288  0
led_class_multicolor    16384  1 leds_cros_ec
cros_kbd_led_backlight    12288  0
cros_ec_sysfs          16384  0
cros_charge_control    16384  0
cros_ec_debugfs        20480  0
cros_ec_chardev        16384  0
cros_ec_hwmon          12288  0
cros_ec_dev            20480  0
cros_ec_lpcs           28672  0
cros_ec                20480  1 cros_ec_lpcs
cros_ec_proto          61440  11 leds_cros_ec,cros_ec_lpcs,cros_kbd_led_backlight,cros_ec,gpio_cros_ec,cros_ec_dev,cros_ec_debugfs,cros_ec_hwmon,cros_ec_sysfs,cros_ec_chardev,cros_charge_control

~
❯ cat /sys/class/power_supply/BAT1/uevent | grep CHARGE
POWER_SUPPLY_CHARGE_FULL_DESIGN=3915000
POWER_SUPPLY_CHARGE_FULL=4014000
POWER_SUPPLY_CHARGE_NOW=2778000
POWER_SUPPLY_CHARGE_CONTROL_START_THRESHOLD=0
POWER_SUPPLY_CHARGE_CONTROL_END_THRESHOLD=100
POWER_SUPPLY_CHARGE_BEHAVIOUR=auto

To get the BIOS working correctly you need to blacklist:

$ cat /etc/modprobe.d/blacklist-cros.conf
blacklist cros_charge_control

$ sudo mkinitcpio -P

This will remove the conflict and let the BIOS control the charging.