Does anyone know how to undervolt an APU (onexfly f1 pro)?
Does anyone know how to undervolt an APU? There are no parameters for this in LACT, and there's no information on the internet about this either.
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GitHub
FAQ
Adjust power management settings for Ryzen APUs. Contribute to FlyGoat/RyzenAdj development by creating an account on GitHub.
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ryzenadj is included with bazzite, use that if your apu is known to work with it
GitHub
GitHub - FlyGoat/RyzenAdj: Adjust power management settings for Ryz...
Adjust power management settings for Ryzen APUs. Contribute to FlyGoat/RyzenAdj development by creating an account on GitHub.
if not, you can also try smokelessUMAF
otherwise no
I'd advise against undervolting on mobile APUs anyway, there is so little headroom that it's more effort than its worth for very little gain
A user from the official onexplayer Discord set the CPU and GPU to -35, and his Onexfly F1 Pro console received a 5-watt performance boost. This means he gets the same FPS in games at 15 watts as he did at 20 watts without undervolting.
Oh, and the official Ryzenadj GitHub page literally doesn't mention a single parameter related to voltage. To find the right parameters, you need to guess by typing "sudo ryzenadj" in the console and find the treasured lines: --set-coall and --set-cogfx
So, I only have one last question left: will the changes I make be saved? Or will I need to write a systemd service later?
Solution
GitHub
FAQ
Adjust power management settings for Ryzen APUs. Contribute to FlyGoat/RyzenAdj development by creating an account on GitHub.
One more important clarification, in case anyone was also looking for an answer to this question. These parameters require u32 values, i.e., a positive hexadecimal number in the format 0xFFFFF. Accordingly, to reduce the voltage by, say, 30 mV, you need to convert 30 to hexadecimal, then subtract the number we obtained above from the hexadecimal number 100000. So, 100000 - 1E = FFFE2. Therefore, the parameter should look like this: --set-coall=0xFFFE2
May I ask what device you tested on? I tried it and only got the result "set_coall is rejected by SMU", unable to set it successfully
onexfly f1 pro
This error occurs when you try to assign an impossible value to a variable.
I just tried --set-coall=0xFFFE2 and other smaller values; all of them report set_coall is rejected by SMU
if you try --set-coall=1048546?
Same report
Can you take a screenshot of the terminal?
The ryzen_smu kernel module warning will not affect the results
I had the same command complain about this kernel module, but the values were still applied. Try asking on the official onexplayer Discord.
https://discord.gg/M4w5GeX3
How can we verify that these values have taken effect?
in response to the command, the system will display a message that the value for the parameter has been successfully set
Maybe it's because of model differences; I tested the oxp x1mini
This is strange, considering that ryzenadj is a universal and cross-platform tool for working with AMD processors, and your console isn't even new, its chip is 100% supported. Perhaps the issue really is with bazzite, and some module doesn't support the 8840u, causing your error.
Can you show your kernel parameters?
cat /proc/cmdline
After some validation tests, including installing different distributions and swapping devices, I’ve roughly confirmed this is a device limitation — or rather a BIOS limitation. It probably isn’t caused by the system itself not supporting it. Among the devices I have, only the Steam Deck supports it, and it’s running the official SteamOS. Other devices, including GOS (SteamOS), the Ally, GPD, etc., cannot be configured successfully.
This is a related decky plugin, but it hardcodes the number of cores and doesn't provide error messages https://github.com/totallynotbakadestroyer/Decky-Undervolt
GitHub
GitHub - totallynotbakadestroyer/Decky-Undervolt: Steam Deck underv...
Steam Deck undervolting plugin for Decky Loader. Contribute to totallynotbakadestroyer/Decky-Undervolt development by creating an account on GitHub.
usually these apus do not support undervolting
some do some dont
HX370 might
X840U do not
z2e not support , might
GitHub
GitHub - aarron-lee/SimpleDeckyTDP: Decky TDP plugin for PC handhel...
Decky TDP plugin for PC handhelds + Linux. Contribute to aarron-lee/SimpleDeckyTDP development by creating an account on GitHub.
As expected, it's not supported