Hi all,
(also posted on Reddit)
I’m setting up my Lenovo Thinkpad P1 gen 2 with NixOS, and right now I’m struggling to improve battery life by only using the Nvidia GPU when called for (offload mode). When I run nvidia-smi, it shows gnome-shell running:
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 545.29.02 Driver Version: 545.29.02 CUDA Version: 12.3 |
|-----------------------------------------+----------------------+----------------------+
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|=========================================+======================+======================|
| 0 Quadro T1000 On | 00000000:01:00.0 On | N/A |
| N/A 42C P8 3W / 35W | 19MiB / 4096MiB | 0% Default |
| | | N/A |
+-----------------------------------------+----------------------+----------------------+
+---------------------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=======================================================================================|
| 0 N/A N/A 11966 G ...6m-gnome-shell-45.2/bin/gnome-shell 1MiB |
+---------------------------------------------------------------------------------------+
Also, running cat /sys/bus/pci/devices/0000\:01\:00.0/power_state returns D0, while I believe it should return D3Cold when it is sleeping. The Nvidia Quadro T1000 is a Turing generation card according to Wikipedia.
I want everything (including gnome-shell) to run on the Intel iGPU and let the Nvidia card go to sleep.
Does anybody know how I can fix this?
/etc/nixos/configuration.nix
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ config, lib, pkgs, ... }:
{
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
];
# Bootloader.
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
networking.hostName = "nixos"; # Define your hostname.
# networking.wireless.enable = true; # Enables wireless support via wpa_supplicant.
# Configure network proxy if necessary
# networking.proxy.default = "http://user:password@proxy:port/";
# networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
# Enable networking
networking.networkmanager.enable = true;
### Copied from https://nixos.wiki/wiki/Nvidia
# Enable OpenGL
hardware.opengl = {
enable = true;
driSupport = true;
driSupport32Bit = true;
};
# Load nvidia driver for Xorg and Wayland
services.xserver.videoDrivers = ["nvidia"];
hardware.nvidia = {
# Modesetting is required.
modesetting.enable = true;
### See https://github.com/NixOS/nixos-hardware/issues/348#issuecomment-997123102
# Nvidia power management. Experimental, and can cause sleep/suspend to fail.
powerManagement.enable = true;
# Fine-grained power management. Turns off GPU when not in use.
# Experimental and only works on modern Nvidia GPUs (Turing or newer).
powerManagement.finegrained = true;
nvidiaPersistenced = true;
# Use the NVidia open source kernel module (not to be confused with the
# independent third-party "nouveau" open source driver).
# Support is limited to the Turing and later architectures. Full list of
# supported GPUs is at:
# https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
# Only available from driver 515.43.04+
# Currently alpha-quality/buggy, so false is currently the recommended setting.
open = false;
# Enable the Nvidia settings menu,
# accessible via `nvidia-settings`.
nvidiaSettings = false;
# Optionally, you may need to select the appropriate driver version for your specific GPU.
package = config.boot.kernelPackages.nvidiaPackages.stable;
prime = {
offload = {
enable = true;
enableOffloadCmd = true;
};
# Make sure to use the correct Bus ID values for your system!
nvidiaBusId = "PCI:1:0:0";
intelBusId = "PCI:0:2:0";
};
};
# Set your time zone.
time.timeZone = "Europe/Amsterdam";
# Select internationalisation properties.
i18n.defaultLocale = "en_US.UTF-8";
i18n.extraLocaleSettings = {
LC_ADDRESS = "nl_NL.UTF-8";
LC_IDENTIFICATION = "nl_NL.UTF-8";
LC_MEASUREMENT = "nl_NL.UTF-8";
LC_MONETARY = "nl_NL.UTF-8";
LC_NAME = "nl_NL.UTF-8";
LC_NUMERIC = "nl_NL.UTF-8";
LC_PAPER = "nl_NL.UTF-8";
LC_TELEPHONE = "nl_NL.UTF-8";
LC_TIME = "nl_NL.UTF-8";
};
# Enable the X11 windowing system.
services.xserver.enable = true;
# Enable the GNOME Desktop Environment.
services.xserver.displayManager.gdm.enable = true;
services.xserver.desktopManager.gnome.enable = true;
# Configure keymap in X11
services.xserver = {
layout = "us";
xkbVariant = "";
};
# Enable CUPS to print documents.
services.printing.enable = true;
# Enable sound with pipewire.
sound.enable = true;
hardware.pulseaudio.enable = false;
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa.enable = true;
alsa.support32Bit = true;
pulse.enable = true;
# If you want to use JACK applications, uncomment this
#jack.enable = true;
# use the example session manager (no others are packaged yet so this is enabled by default,
# no need to redefine it in your config for now)
#media-session.enable = true;
};
# Enable touchpad support (enabled default in most desktopManager).
# services.xserver.libinput.enable = true;
# Define a user account. Don't forget to set a password with ‘passwd’.
users.users.REDACTED = {
isNormalUser = true;
description = "REDACTED";
extraGroups = [ "networkmanager" "wheel" ];
packages = with pkgs; [
firefox
# thunderbird
];
};
# Allow unfree packages
nixpkgs.config.allowUnfree = true;
# List packages installed in system profile. To search, run:
# $ nix search wget
environment.systemPackages = with pkgs; [
# vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
# wget
git
killall
];
# Some programs need SUID wrappers, can be configured further or are
# started in user sessions.
# programs.mtr.enable = true;
# programs.gnupg.agent = {
# enable = true;
# enableSSHSupport = true;
# };
# List services that you want to enable:
### As found here: https://github.com/NixOS/nixos-hardware/blob/8e34f33464d77bea2d5cf7dc1066647b1ad2b324/lenovo/thinkpad/p1/default.nix
# services.fprintd.enable = true;
services.power-profiles-daemon.enable = false;
services.tlp = {
enable = true;
settings = {
CPU_SCALING_GOVERNOR_ON_AC = "performance";
CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
CPU_ENERGY_PERF_POLICY_ON_AC = "performance";
CPU_MIN_PERF_ON_AC = 0;
CPU_MAX_PERF_ON_AC = 100;
CPU_MIN_PERF_ON_BAT = 0;
CPU_MAX_PERF_ON_BAT = 40;
#Optional helps save long term battery health
START_CHARGE_THRESH_BAT0 = 80; # 40 and bellow it starts to charge
STOP_CHARGE_THRESH_BAT0 = 90; # 80 and above it stops charging
};
};
# Enable the OpenSSH daemon.
# services.openssh.enable = true;
# Open ports in the firewall.
# networking.firewall.allowedTCPPorts = [ ... ];
# networking.firewall.allowedUDPPorts = [ ... ];
# Or disable the firewall altogether.
# networking.firewall.enable = false;
# This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave
# this value at the release version of the first install of this system.
# Before changing this value read the documentation for this option
# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
system.stateVersion = "23.11"; # Did you read the comment?
}
Neofetch
▗▄▄▄ ▗▄▄▄▄ ▄▄▄▖ REDACTED@nixos
▜███▙ ▜███▙ ▟███▛ ----------------
▜███▙ ▜███▙▟███▛ OS: NixOS 23.11.2413.32f63574c85f (Tapir) x86_64
▜███▙ ▜██████▛ Host: LENOVO 20QUS00000
▟█████████████████▙ ▜████▛ ▟▙ Kernel: 6.1.69
▟███████████████████▙ ▜███▙ ▟██▙ Uptime: 30 mins
▄▄▄▄▖ ▜███▙ ▟███▛ Packages: 954 (nix-system), 325 (nix-user)
▟███▛ ▜██▛ ▟███▛ Shell: bash 5.2.15
▟███▛ ▜▛ ▟███▛ Resolution: 1920x1080, 1920x1080
▟███████████▛ ▟██████████▙ DE: GNOME 45.2 (Wayland)
▜██████████▛ ▟███████████▛ WM: Mutter
▟███▛ ▟▙ ▟███▛ WM Theme: Adwaita
▟███▛ ▟██▙ ▟███▛ Theme: Adwaita [GTK2/3]
▟███▛ ▜███▙ ▝▀▀▀▀ Icons: Adwaita [GTK2/3]
▜██▛ ▜███▙ ▜██████████████████▛ Terminal: kgx
▜▛ ▟████▙ ▜████████████████▛ CPU: Intel i7-9750H (12) @ 4.500GHz
▟██████▙ ▜███▙ GPU: NVIDIA Quadro T1000 Mobile
▟███▛▜███▙ ▜███▙ GPU: Intel CoffeeLake-H GT2 [UHD Graphics 630]
▟███▛ ▜███▙ ▜███▙ Memory: 4396MiB / 31879MiB
▝▀▀▀ ▀▀▀▀▘ ▀▀▀▘
Related sources I found
- Power Managment with nvidia GPU - #14 by lovirent
- Laptop - NixOS Wiki
- Nvidia - NixOS Wiki
- https://github.com/NixOS/nixos-hardware/blob/8e34f33464d77bea2d5cf7dc1066647b1ad2b324/common/gpu/nvidia/prime.nix
- https://www.reddit.com/r/Fedora/comments/x487g1/how_to_force_waylandgnomeshell_to_use_intel_igpu/
- Gnome 43: gnome-shell forces itself onto dGPU instead of using iGPU in PRIME Render Offloading setups using Wayland (#2969) · Issues · GNOME / mutter · GitLab
- https://www.reddit.com/r/Fedora/comments/z29edh/deleted_by_user/
- Gnome 43: gnome-shell forces itself onto dGPU instead of using iGPU in PRIME Render Offloading setups using Wayland (#6146) · Issues · GNOME / gnome-shell · GitLab