2022-09-04 12:54:22 +00:00
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---
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creation date: 2022-08-15
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tags: [note,amd,cpu,linux,cppc]
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---
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2023-04-10 08:30:46 +00:00
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`amd-pstate` allows lower idle CPU frequencies. This is not default, let's enable it.
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2022-09-04 12:54:22 +00:00
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1. Set any CPPC setting to `enabled` in BIOS (if available, try without it might also work)
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2. Add `amd_pstate.shared_mem=1` as Kernel parameter
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3. Add `amd-pstate` by editing `/etc/modules-load.d/amd-pstate.conf` and inserting `amd_pstate` into the file
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4. Reboot
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5. Verify
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1. if you get low frequencies with `watch -n1 "grep \"^[c]pu MHz\" /proc/cpuinfo"`
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2. if you get the proper scaling driver with `/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver`
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