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I enabled the pstate driver yesterday for my T14s gen3 (AMD). It almost doubled my battery life, the fan never spins anymore and it's very very quiet and cool n
by pimeys 3y ago
I enabled the pstate driver yesterday for my T14s gen3 (AMD). It almost doubled my battery life, the fan never spins anymore and it's very very quiet and cool now. You need to specifically enable it in Linux kernel, this is how I did it:
https://github.com/pimeys/nixos/commit/17e8a9e2ce4b0f34ef6cf7ab6ca1c00ecb976c58 https://github.com/pimeys/nixos/commit/17e8a9e2ce4b0f34ef6cf...
It should also be used together with the `shedutil` governor for the best results.
- talhah 3y agoCPPC needs to be enabled in BIOS for this and unfortunately that option isn't present. If you see the thread linked in previous comment, Lenovo has been advised not to enable the feature :/
- pimeys 3y agoSeems to work for me at least: > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver amd-pstate And, it has a tremendous effect on battery life and the fan speed on the G3. Maybe it doesn't work with previous models?
- dvd23 3y agoAs the parent said, apparently AMD recommended not to enable it for that generation [1]. That's the price to pay for having a first gen I suppose... [1] https://forums.lenovo.com/t5/Other-Linux-Discussions/amd-pstate-driver-support-for-AMD-laptops/m-p/5135917?page=6#5897327 https://forums.lenovo.com/t5/Other-Linux-Discussions/amd-pst...