Linux 6.5 With AMD P-State EPP Default Brings Performance & Power Efficiency Benefits For Ryzen Servers

[Ranguvar]

Look for BIOS updates for your board, the CPU is not the reason.

I just updated the BIOS and ASUS Prime X570 and got hit with a bug. The settings were left on AUTO by default which suggest vendors issue. Workaround is to add parameters.

I updated to the new F37g with AGESA V2 1.2.0.B
I also reset CMOS and tired many combinations of settings

No 'cppc' flag in lscpu regardless.

[Anux]

Maybe it is your distro having strange kernel settings? Try a live medium from arch or something recent/rolling. But it could just be, that your BIOS doesn't support it even in newer versions.

[Ranguvar]

Maybe it is your distro having strange kernel settings? Try a live medium from arch or something recent/rolling. But it could just be, that your BIOS doesn't support it even in newer versions.

While I'm using the X2APIC patch, I've tested plain Arch kernel as well.

It seems to be either UEFI or CPU issue, as I still have no confirmed report from a Zen3 desktop CPU user on any UEFI actually seeing the 'cppc' feature flag or checking their pstate driver is using shared_mem=0.

[Anux]

It seems to be either UEFI or CPU issue, as I still have no confirmed report from a Zen3 desktop CPU user on any UEFI actually seeing the 'cppc' feature flag or checking their pstate driver is using shared_mem=0.

I will see tonight because I'm pretty sure I have the flag, but it's a Zen3 APU. I only have it after activating the CPPC Option in BIOS not with standard Settings.