Problem setting voltage "Could not write new value to CPU!"
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Hello,
I might be missing something here (I am far from being an expert), but I tried to undervolt my processor and could not make it.
I am using a laptop with a 4700U (family 17h) with Linux Mint, I tried to execute the command sudo ./amdctl -p0 -v104 and I got the following response:
mint@mint:~/amdctl$ sudo ./amdctl -p 0 -v 104
Voltage ID encodings: SVI (serial)
Detected CPU model 60h, from family 17h with 8 CPU cores.
PREVIEW MODE OFF - P-STATES WILL BE CHANGED!Core 0 | P-State Limits (non-turbo): Highest: 0 ; Lowest 2 | Current P-State: 0
Pstate Status CpuFid CpuDid CpuVid CpuMult CpuFreq CpuVolt IddVal IddDiv CpuCurr CpuPower
ERROR: Could not write new value to CPU!
Does anyone know what I am missing ?
Thank you !
Perhaps you have writing to MSR disabled? If so, see https://github.com/kevinlekiller/amdctl#requirements
I thought this was only a problem with kernels > 5.9
I am using Linux 5.4.0-91-generic x86_64
I tried sudo modprobe msr and got no message error
Alright, not sure then.
I think I found the problem. I disabled Secureboot in the BIOS/UEFI and now it works with no problem !
I hope this will help somebody in the future :D
You can close this. Thanks for your help and reactivity !
Great, glad you got it sorted!