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Value Not Equal, is the value set? #25

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benyaminl opened this issue Jun 17, 2019 · 4 comments

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@benyaminl
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commented Jun 17, 2019

Hello, Whenever I set the analog IO to other value than -0, it will give value do not equal. Is this mean the configuration failed or it's just error reading. Thanks

Conf file

undervolt 0 'CPU' -93
undervolt 1 'GPU' -103
undervolt 2 'CPU Cache' -125
undervolt 3 'System Agent' -100
undervolt 4 'Analog I/O' -0

result

CPU (0): -92.77 mV
GPU (1): -102.54 mV
CPU Cache (2): -125.00 mV
System Agent (3): Values do not equal
Analog I/O (4): -0.00 mV
@stephanlachnit

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commented Jun 24, 2019

Probably an error. The program sets the values, this works by sending some commands to the BIOS, and then it reads them again, just to check if it works. If a value is different, you'll get this error.
You can check with # intel-undervolt read what the current value is.

@benyaminl

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commented Jun 24, 2019

Probably an error. The program sets the values, this works by sending some commands to the BIOS, and then it reads them again, just to check if it works. If a value is different, you'll get this error.
You can check with # intel-undervolt read what the current value is.

when it's error, does it mean the change value not working?

@stephanlachnit

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commented Jun 24, 2019

As I said, you can check with # intel-undervolt read what the current voltage is. If it's 0.00mV it probably didn't work.
Theoretically it could just be different value compared what's in your config, but I doubt that.
It's also possible, that your CPU / BIOS just doesn't want to send you the current voltage. In this case, you have really no way to check if it worked or not.

If Analog IO doesn't work for you, doesn't mean it's an iusse with the program, it could just be not supported by your CPU or BIOS.

@kitsunyan

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commented Jul 6, 2019

You can try to undervolt using wrmsr and rdmsr as described here. How different are written and read values?

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