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georgewhewell / undervolt

Undervolt Intel CPUs under Linux
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Write to unrecognised MSR 0x150 #157

Closed ldaws011 closed 3 years ago

ldaws011 commented 3 years ago

dmesg prints: 

[ 2403.691425] filter_write: 71 callbacks suppressed
[ 2403.691426] msr: Write to unrecognized MSR 0x150 by python3 (pid: 17342). Please report to x86@kernel.org.

upon running undervolt.py for adjusting (--core, --cache) and reading (--read) voltages Running on an Acer Nitro 5 with i5-8300H CPU. I believe the CPU still undervolts, and --read prints correct information, so I'm assuming this warning can be safely ignored?

maxiberta commented 3 years ago

Same thing on a Core i7-9750H. Undervolt seems to work anyway.

GFNIAE commented 3 years ago

Hello, I meet the same error message on kernel log (MXLinux 21 on a Dell XPS 7590, kernel 5.10, sysvinit as init system) : "Write to unrecognized MSR 0x150 by undervolt (pid: 2423). Please report to x86@kernel.org." According to undervolt --read, the settings are applied, but this message seems like there is at least one action of the script that does not reach its goal. Is there something to check or to try ?

georgewhewell commented 3 years ago

it's just a warning, can ignore it

GFNIAE commented 3 years ago

Hello geordewhewell, thanks for your anwser ! I picked in another of your answer this trial : I add "msr.allow_writes=on" on the kernel parameter. As a consequence there is no warning anymore in dmesg. Do you know if it's better not to use this parameter (and deal with the dmesg warning), or if it does not hurt ?