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To get what I want, I'd to make small changes to the output of your script. APLF is responsible for setting frequency of low frequency mode, it's easier to set this value in the generated ssdt-pr.dsl to 0x04 for 1200 MHz for mobile ivy bridge or 0x08 for 1600 MHz for desktop ivy bridge...

According to Intel's technical documentation or from looking at officially supported configurations (Ivy Bridge Macs, Ivy Bridge PCs running Windows or Linux) Desktop Ivy Bridge parts are meant running frequencies 1600 MHz upwards, going as low as 800 MHz is reserved for Mobile parts. With...

Seems like APLF works the other way. With APLF 0x04 I got lowest freq of 1200 MHz With APLF 0x05 I got 1300 MHz With APLF 0x03 I got 1100 MHz With APLF 0x02 I got 1000 MHz With APLF 0x01 I got 900 MHz APLF 0x00 should give 800 MHz but kernel panics I haven't to change anything in the...

I've tested version 1.5 of your script. ACST errors are gone. Without duplicating/adding an additional P-State CPU is stuck at 800 MHz. With duplicating/adding an additional P-State I get P-States from 1600 Mhz to highest P-State. Changing Name (APLF, 0x08) to (APLF, 0x04) and Name (APSN...

Check your EMail

Like Bimmer325Ci my CPU was first stuck at x8 (800 MHz). After duplication of lowest 800 MHz P-State entry everything works, MSRDumper reports P-States from 16 to 42.