P-states partially disabled (P3+), reenabling ignored by acpi-cpufreq/schedutil govenor

SgtAwesomesauce · June 10, 2020, 1:21am

Have you seen this thread?

Overclock your Ryzen CPU from Linux Wikis & How-to Guides

So you’ve probably heard of Ryzen Master? Except you happen to use Linux. What’s there to do? Well with this little python application and the help of MSR’s (Model Specific Registers) on Ryzen CPU’s you can manually overclock your Ryzen processor. While it’s running! 1. Load 2 kernel modules These should come as standard on any distro sudo modprobe msr cpuid 2. Download the following repo git clone https://github.com/r4m0n/ZenStates-Linux.git Now once that’s done it’s time to get well acquainted with your processor 3. Run zenstates sudo ./zenstates.py -l For a 1700X on stock settings you should see something like this P0 - Enabled - FID = 88 - DID = 8 - VID = 20 - Ratio = 34.00 - vCore = 1.35000 P1 - Enabled - FID = 78 - DID = 8 - VID = 2C - Ratio = 30.00 - vCore = 1.27500 P2 - Enabled - FID = 84 - DID = C - VID = 68 - Ratio = 22.00 - vCore = 0.90000 P3 - Disabled P4 - Disabled P5 - Disabled P6 - Disabled P7 - Disabled C6 State - Package - Enabled C6 State - Core - Enabled For a stock 1800X it looks like this: P0 - Enabled - FID = 90 - DID = 8 - VID = 20 - Ratio = 36.00 - vCore = 1.35000 P1 - Enabled - FID = 80 - DID = 8 - VID = 2C - Ratio = 32.00 - vCore = 1.27500 P2 - Enabled - FID = 84 - DID = C - VID = 68 - Ratio = 22.00 - vCore = 0.90000 P3 - Disabled P4 - Disabled P5 - Disabled P6 - Disabled P7 - Disabled C6 State - Package - Enabled C6 State - Core - Enabled Most Ryzen CPU’s only seem to support P-states P0, P1 and P2, keep this in mind. All values are set in hexadecimal values and require a bit of thought and math to use safely YOU CAN TOTALLY BREAK THINGS HERE! You and only you the reader take responsibility for performing any of the actions described here on your system. Don’t come crying to me if you entered the wrong values and flames came shooting out of your Hardware. Now what are some of the numbers we see above? FID – Frequency ID in Hexadecimal VID – Voltage ID in Hexadecimal DID – Divisor ID in Hexadecimal R…

Specifically:

Most Ryzen CPU’s only seem to support P-states P0, P1 and P2, keep this in mind.

I wonder if this is a driver issue or a hardware limitation.