From 53b22caecbe865ec64ccea58c75ed6fd77848346 Mon Sep 17 00:00:00 2001 From: MasterKia Date: Wed, 18 Oct 2023 12:25:46 +0330 Subject: [PATCH] Update the TDP stuck on 80W section --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 0965422..4ccd0ca 100644 --- a/README.md +++ b/README.md @@ -853,7 +853,7 @@ Changing power mode without Lenovo Legion Linux is purely implemented in hardwar - Fan curve in embedded controller changes. - Other purely hardware configs might also change, but I have not observed one. - ~~As far as I know, power saving or performance of CPU does not change, as this is controlled by kernel or tools like cpupower~~ -- An analysis of the ACPI firmware, which is "stored in hardware", shows that some power options, e.g. the STAPM limit, of the CPU and GPU are changed via ACPI calls. This can be observed by changing power mode with Fn+Q and checking CPU power limits, e.g. with `ryzenadj` for AMD CPUs. ~~However, no changes to the GPU power limits are observed on NVIDIA GPUs, which might indicate that the integration of ACPI and GPU driver is faulty on Linux~~ On driver 535+, GPU power limits for nvidia changes on battery power (40w on quiet and 50w on balanced for RTX 3070), on power adapter, the power limit are allways set to max on peformance (reported by `nvidia-smi`), but more power is allowed to the GPU on performance or custom mode in demanding GPU tasks. Currently the power limit on performance mode is stuck on 80W compared to 115W/130W on Windows (see: https://forums.developer.nvidia.com/t/lenovo-legion-5-rtx-3060-460-x-470-x-495-x-power-draw-stuck-at-80w-windows-does-130w/192174). +- An analysis of the ACPI firmware, which is "stored in hardware", shows that some power options, e.g. the STAPM limit, of the CPU and GPU are changed via ACPI calls. This can be observed by changing power mode with Fn+Q and checking CPU power limits, e.g. with `ryzenadj` for AMD CPUs. ~~However, no changes to the GPU power limits are observed on NVIDIA GPUs, which might indicate that the integration of ACPI and GPU driver is faulty on Linux~~ On driver 535+, GPU power limits for nvidia changes on battery power (40w on quiet and 50w on balanced for RTX 3070), on power adapter, the power limit are allways set to max on peformance (reported by `nvidia-smi`), but more power is allowed to the GPU on performance or custom mode in demanding GPU tasks. If the GPU power limit on performance mode is stuck on 80W compared to 115W/130W on Windows, you're affected by this bug: [NVIDIA/open-gpu-kernel-modules#483](https://github.com/NVIDIA/open-gpu-kernel-modules/issues/483). - Without Lenovo Legion Linux, the kernel or other system tools will not know that you have changed the power mode. Changing power mode **with** Lenovo Legion Linux: