Two monitors, ASUS PA248 (60hz, works pretty fine.), and ASUS VG248 (144hz, is the monitor with the flickering issue after setting it above 60hz.)
Using KDE Plasma 6 and normally on other this was fixed by installing proprietary drivers for my Nvidia 1080 TI.
Heres my configuration.nix settings for nvidia, currently on Wayland as well.
When attempting to rebuild I just get these errors, so it could be that I don’t know how to install stuff or something.
building the system configuration...
error:
… while evaluating the attribute 'config.system.build.toplevel'
at /nix/var/nix/profiles/per-user/root/channels/nixos/lib/modules.nix:322:9:
321| options = checked options;
322| config = checked (removeAttrs config [ "_module" ]);
| ^
323| _module = checked (config._module);
… while calling the 'seq' builtin
at /nix/var/nix/profiles/per-user/root/channels/nixos/lib/modules.nix:322:18:
321| options = checked options;
322| config = checked (removeAttrs config [ "_module" ]);
| ^
323| _module = checked (config._module);
(stack trace truncated; use '--show-trace' to show the full trace)
error: attempt to call something which is not a function but a set
at /etc/nixos/configuration.nix:7:1:
6|
7| {
| ^
8| imports =
Tried rebooting tons of times but here you go, I’m new to 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, 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;
# Set your time zone.
time.timeZone = "America/New_York";
# Select internationalisation properties.
i18n.defaultLocale = "en_US.UTF-8";
i18n.extraLocaleSettings = {
LC_ADDRESS = "en_US.UTF-8";
LC_IDENTIFICATION = "en_US.UTF-8";
LC_MEASUREMENT = "en_US.UTF-8";
LC_MONETARY = "en_US.UTF-8";
LC_NAME = "en_US.UTF-8";
LC_NUMERIC = "en_US.UTF-8";
LC_PAPER = "en_US.UTF-8";
LC_TELEPHONE = "en_US.UTF-8";
LC_TIME = "en_US.UTF-8";
};
# Enable the X11 windowing system.
# You can disable this if you're only using the Wayland session.
services.xserver.enable = true;
# Enable the KDE Plasma Desktop Environment.
services.displayManager.sddm.enable = true;
services.desktopManager.plasma6.enable = true;
# Configure keymap in X11
services.xserver.xkb = {
layout = "us";
variant = "";
};
# Enable CUPS to print documents.
services.printing.enable = true;
# Enable sound with pipewire.
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.nixy = {
isNormalUser = true;
description = "Nix Youness";
extraGroups = [ "networkmanager" "wheel" ];
packages = with pkgs; [
kdePackages.kate
kdePackages.krita
# thunderbird
];
};
# Install firefox.
programs.firefox.enable = true;
programs.steam.enable = true;
programs.steam.gamescopeSession.enable = true;
environment.systemPackages = with pkgs; [
mangohud lutris steam
];
programs.gamemode.enable = true;
# 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
# ];
# 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:
# 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 = "24.05"; # Did you read the comment?
}
{
hardware.opengl = {
enable = true;
driSupport = true;
driSupport32Bit = true;
};
services.xserver.videoDrivers = ["nvidia"];
hardware.nvidia.modesetting.enable = true;
}
Well, here’s where your error message is coming from:
In these lines, you’re closing one attribute set with the } and then opening another one with {; Nix thinks you’re trying to use the first set as a function taking the second as an argument. Remove both brace characters to merge the two.
If you did this because you wanted to compartmentalise portions of code, it’s best practise to do that using separate module files which you then add to the imports.
If you want to get really fancy, you should make proper modules out of your config and add your own custom options. It’s not very hard to do and makes sharing your config between multiple machines a breeze.
My whole desktop config is a module with a few options that toggle it and adapt it for different machines’ purposes for example. One of the machines is a tablet and needs a touch-friendly desktop while my gaming desktop uses xorg for gaming purposes (well, used to, but the point is it could). On my laptop I also enable a power-saving hack that I don’t want on my desktop PC.
My server machine simply doesn’t enable the desktop module because it doesn’t need a GUI.