Crashing after starting Wayland backend, ubuntu/nix #10737

Tramscan · 2025-06-14T04:41:36Z

Tramscan
Jun 14, 2025

I've been debugging these issues and have made it a few days before needing to make a post, I can't seem to get wayland to start no matter how hard I try. I'm using ubuntu and attempting to use home-manager/nix to manage hyprland on an nvidia gpu. Here are my steps to reproduce:

Steps to reproduce

Start hyprland in SDDM, crashing after logon
OR

Switch to TTY2
Kill SDDM on TTY1
Run Hyprland

Expected outcome

Hyprland launches and displays a Wayland session on my Nvidia GPU

Actual Outcome

Hyprland fails with [ERR] [AQ] Wayland backend cannot start: wl_display_connect failed (is a wayland compositor running?)

System info

Operating System: Ubuntu 22.04.5 LTS
Kernel: Linux 6.8.0-60-generic
NVML library version: 570.133
CPU: AMD 7800x3D
GPU: NVIDIA RTX 4070
Hyprland --version output:
Hyprland 0.49.0 built from branch main at commit 9958d297641b5c84dcff93f9039d80a5ad37ab00 (version: bump to 0.49.0). Date: 2025-05-08 Tag: v0.49.0, commits: 9958d297641b5c84dcff93f9039d80a5ad37ab00 built against: aquamarine 0.8.0 hyprlang 0.6.3 hyprutils 0.7.1 hyprcursor 0.1.12 hyprgraphics 0.1.3

Config

Using nix with home-manager and flakes:

flake.nix:

{
  description = "My Ubuntu Nix";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixvim = {
      url = "github:nix-community/nixvim";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixpkgs-mesa-24-2-7 = {
      url = "github:NixOS/nixpkgs/459a925026a28f5a762d648108c4d21068d080e3";
      flake = false;
    };
    nixgl = {
      url = "github:nix-community/nixGL";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = { self, nixpkgs, home-manager, nixvim, nixgl, nixpkgs-mesa-24-2-7, ... }@inputs:
  let
    system = "x86_64-linux";
    pkgs = import nixpkgs {
      inherit system;
      config.allowUnfree = true;
    };
  in {
    homeConfigurations = {
      nick = home-manager.lib.homeManagerConfiguration {
        inherit pkgs;
        modules = [
          ./home-manager/home.nix
          nixvim.homeManagerModules.nixvim
        ];
        extraSpecialArgs = {
          inherit inputs nixgl;
        };
      };
    };
  };
}`

## home.nix:

`
{ config, pkgs, lib, inputs, nixgl, ... }:

let
  nixGLPackage = nixgl.packages.${pkgs.system}.nixGLIntel;
  nixGLWrap = pkg: pkgs.runCommand "${pkg.name}-nixgl-wrapper" {} ''
    mkdir -p $out/bin
    for bin in ${pkg}/bin/*; do
      wrapped_bin=$out/bin/$(basename $bin)
      echo "#!${pkgs.bash}/bin/bash" > $wrapped_bin
      echo "exec ${nixGLPackage}/bin/nixGLIntel $bin \"\$@\"" >> $wrapped_bin
      chmod +x $wrapped_bin
    done
  '';
  pkgsMesa24_2_7 = import inputs.nixpkgs-mesa-24-2-7 {
    inherit (pkgs) system;
  };
  wrappedAlacritty = nixGLWrap pkgs.alacritty;
in
rec {

  home.username = "nick";
  home.homeDirectory = "/home/nick";

  home.stateVersion = "24.05"; # Please read the comment before changing.

  nixpkgs.config = {
    allowUnfree = true;
  };

  nixpkgs.overlays = [
    (final: prev: {
      mesa = pkgsMesa24_2_7.mesa;
    })
  ];

  imports = [
  	./apps/i3
	./apps/nixvim
	./apps/alacritty
	./apps/hyprland
  ];


  nixpkgs.config.allowUnfreePredicate = (pkg: true);
  home.packages = with pkgs; [
  	neofetch
	vesktop
	picom
	waybar
	protonup-qt
	mujoco
	freecad
	mesa
	nixGLPackage
	wrappedAlacritty
	gh
	pavucontrol
	zenith-nvidia
	obsidian
	libva
	egl-wayland
	wayland
	wayland-protocols
	libglvnd
	xwayland

  ];

  home.file = {
  };


  home.sessionVariables = {
    SUDO_EDITOR = "nvim";
    SYSTEMD_EDITOR = "nvim";
    EDITOR = "nvim";
    VISUAL = "nvim";
    TERMINAL = "alacritty";
    LOCALE_ARCHIVE = "${pkgs.glibcLocales}/lib/locale/locale-archive";
  };

  programs.home-manager.enable = true;

  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" "auto-allocate-uids"];
      auto-optimise-store = true;
      auto-allocate-uids = true;
      max-jobs = "auto";
      trusted-users = [ "nick" ];
    };
    package = pkgs.nix;
  };

  programs.alacritty = {
    enable = true;
    package = wrappedAlacritty;
  };

}
`

## Hyprland Config
and my hyprland config in home-manager/apps/hyprland/default.nix:

`{ config, pkgs, lib, inputs, nixgl, ...}:

{
  home.sessionVariables = {
      WLR_RENDERER = "vulkan";
      GBM_BACKEND = "nvidia-drm";
      LIBVA_DRIVER_NAME = "nvidia";
      __GLX_VENDOR_LIBRARY_NAME = "nvidia";
      NIXOS_OZONE_WL = "1";     
      QT_QPA_PLATFORM = "wayland"; 
      GDK_BACKEND = "wayland";   
      XDG_CURRENT_DESKTOP = "Hyprland"; 
      XDG_SESSION_TYPE = "wayland";
      XDG_SESSION_DESKTOP = "Hyprland";
  };

  wayland.windowManager.hyprland = {
    enable = true;
    package = config.lib.nixGL.wrap pkgs.hyprland;
    settings = {
      "$mod" = "SUPER";
      bind = [
      "$mod, ENTER, exec, alacritty"
      "$mod, Q, killactive"
      "$mod, D, exec, wofi --show drun"
      ];
      env = [
        "LIBVA_DRIVER_NAME,nvidia"
        "__GLX_VENDOR_LIBRARY_NAME,nvidia"
	"WLR_RENDERER,vulkan"
	"AQ_DRM_DEVICES,$HOME/.config/hypr/nvidia-gpu"
      ];

      general = {
	gaps_in = 5;
      };

      decoration = {
	rounding = 10;
      };

      animations = {
	enabled = true;
      };

      exec-once = [
	"waybar"
	"mako"
	"nm-applet --indicator"
      ];
    };

  };

  gtk = {
    enable = true;
    theme = {
      name = "Adwaita-dark";
      package = pkgs.adwaita-icon-theme;
    };
  };

  home.pointerCursor = {
    enable = true;
    package = pkgs.bibata-cursors;
    name = "Bibata-Modern-Classic";
    size = 24;
  };

}

~/.config/hypr/nvidia-gpu is symlinked to the /dev/dri/by-path/ path for my nvidia card as hyprland kept breaking up the string by using the colons in the filepath as delimiters.

Crash Report:

--------------------------------------------
   Hyprland Crash Report
--------------------------------------------
This was an accident, I swear!

Hyprland received signal 6(ABRT)
Version: 9958d297641b5c84dcff93f9039d80a5ad37ab00
Tag: v0.49.0
Date: 2025-05-08
Flags:

System info:
	System name: Linux
	Node name: nick-kub-new-rig
	Release: 6.8.0-60-generic
	Version: #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2

GPU:
	01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:2786] (rev a1) (prog-if 00 [VGA controller])
11:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164e] (rev cb) (prog-if 00 [VGA controller])


os-release:
	PRETTY_NAME="Ubuntu 22.04.5 LTS"
	NAME="Ubuntu"
	VERSION_ID="22.04"
	VERSION="22.04.5 LTS (Jammy Jellyfish)"
	VERSION_CODENAME=jammy
	ID=ubuntu
	ID_LIKE=debian
	HOME_URL="https://www.ubuntu.com/"
	SUPPORT_URL="https://help.ubuntu.com/"
	BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
	PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
	UBUNTU_CODENAME=jammy
Backtrace:
	 | /home/nick/.nix-profile/bin/Hyprland(_Z12getBacktracev+0x5b) [0x82984b]
		getBacktrace()
		??:?
	1 | /home/nick/.nix-profile/bin/Hyprland(_ZN14NCrashReporter18createAndSaveCrashEi+0xbe5) [0x7261b5]
		NCrashReporter::createAndSaveCrash(int)
		??:?
	2 | /home/nick/.nix-profile/bin/Hyprland() [0x6732bd]
		handleUnrecoverableSignal(int)
		??:?
	3 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x41470) [0x77f71e841470]
		??
		??:0
	4 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x99cdc) [0x77f71e899cdc]
		??
		??:0
	5 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(gsignal+0x16) [0x77f71e8413c6]
		??
		??:0
	6 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(abort+0xd7) [0x77f71e82893a]
		??
		??:0
	7 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xadc3d) [0x77f71ecadc3d]
		??
		??:0
	#8 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xbf1ca) [0x77f71ecbf1ca]
		??
		??:0
	#9 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(_ZSt10unexpectedv+0) [0x77f71ecad7e9]
		??
		??:0
	#1 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xbf447) [0x77f71ecbf447]
		??
		??:0
	#11 | /home/nick/.nix-profile/bin/Hyprland() [0x834151]
		throwError(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) [clone .cold]
		??:?
	#12 | /home/nick/.nix-profile/bin/Hyprland(_ZN11CCompositor10initServerENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi+0xf01) [0x6958c1]
		CCompositor::initServer(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int)
		??:?
	#13 | /home/nick/.nix-profile/bin/Hyprland(main+0x96d) [0x8a5eed]
		main
		??:?
	#14 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x2a47e) [0x77f71e82a47e]
		??
		??:0
	#15 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(__libc_start_main+0x89) [0x77f71e82a539]
		??
		??:0
	#16 | /home/nick/.nix-profile/bin/Hyprland(_start+0x25) [0x623ae5]
		_start
		??:?


Log tail:
[LOG] [AQ] drm: Mode 1: [email protected]
[LOG] [AQ] drm: Mode 2: [email protected]
[LOG] [AQ] drm: Mode 3: [email protected]
[LOG] [AQ] drm: Mode 4: [email protected]
[LOG] [AQ] drm: Mode 5: [email protected]
[LOG] [AQ] drm: Mode 6: [email protected]
[LOG] [AQ] drm: Mode 7: [email protected]
[LOG] [AQ] drm: Mode 8: [email protected]
[LOG] [AQ] drm: Mode 9: [email protected]
[LOG] [AQ] drm: Mode 10: [email protected]
[LOG] [AQ] drm: Mode 11: [email protected]
[LOG] [AQ] drm: Mode 12: [email protected]
[LOG] [AQ] drm: Mode 13: [email protected]
[LOG] [AQ] drm: Mode 14: [email protected]
[LOG] [AQ] drm: Mode 15: [email protected]
[LOG] [AQ] drm: Mode 16: [email protected]
[LOG] [AQ] drm: Mode 17: [email protected]
[LOG] [AQ] drm: Mode 18: [email protected]
[LOG] [AQ] drm: Mode 19: [email protected]
[LOG] [AQ] drm: Mode 20: [email protected]
[LOG] [AQ] drm: Mode 21: [email protected]
[LOG] [AQ] drm: Mode 22: [email protected]
[LOG] [AQ] drm: Mode 23: [email protected]
[LOG] [AQ] drm: Mode 24: [email protected]
[LOG] [AQ] drm: Physical size [Vector2D: x: 600, y: 340] (mm)
[LOG] [AQ] drm: Description LG Electronics 27GL850 008NTZNC9205 (DP-1)
[LOG] [AQ] drm: connector DP-1 crtc is capable of vrr: props.vrr_capable -> 99, crtc->props.vrr_enabled -> 24
[LOG] [AQ] drm: Explicit sync unsupported
[LOG] [AQ] drm: connector DP-1 crtc doesn't support CTM
[LOG] [AQ] drm: connector DP-1 crtc doesn't support HDR (0)
[LOG] [AQ] drm: connector DP-1 crtc doesn't support Colorspace (0)
[LOG] [AQ] drm: Connector DP-2 connected
[LOG] [AQ] drm: Connecting connector DP-2, CRTC ID 55
[LOG] [AQ] drm: Dumping detected modes:
[LOG] [AQ] drm: Mode 0: [email protected]  (preferred)
[LOG] [AQ] drm: Mode 1: [email protected]
[LOG] [AQ] drm: Mode 2: [email protected]
[LOG] [AQ] drm: Mode 3: [email protected]
[LOG] [AQ] drm: Mode 4: [email protected]
[LOG] [AQ] drm: Mode 5: [email protected]
[LOG] [AQ] drm: Mode 6: [email protected]
[LOG] [AQ] drm: Mode 7: [email protected]
[LOG] [AQ] drm: Mode 8: [email protected]
[LOG] [AQ] drm: Mode 9: [email protected]
[LOG] [AQ] drm: Mode 10: [email protected]
[LOG] [AQ] drm: Mode 11: [email protected]
[LOG] [AQ] drm: Mode 12: [email protected]
[LOG] [AQ] drm: Mode 13: [email protected]
[LOG] [AQ] drm: Mode 14: [email protected]
[LOG] [AQ] drm: Mode 15: [email protected]
[LOG] [AQ] drm: Mode 16: [email protected]
[LOG] [AQ] drm: Mode 17: [email protected]
[LOG] [AQ] drm: Mode 18: [email protected]
[LOG] [AQ] drm: Mode 19: [email protected]
[LOG] [AQ] drm: Mode 20: [email protected]
[LOG] [AQ] drm: Mode 21: [email protected]
[LOG] [AQ] drm: Mode 22: [email protected]
[LOG] [AQ] drm: Mode 23: [email protected]
[LOG] [AQ] drm: Mode 24: [email protected]
[LOG] [AQ] drm: Physical size [Vector2D: x: 600, y: 340] (mm)
[LOG] [AQ] drm: Description LG Electronics LG ULTRAGEAR 208NTVSGT455 (DP-2)
[LOG] [AQ] drm: connector DP-2 crtc is capable of vrr: props.vrr_capable -> 100, crtc->props.vrr_enabled -> 24
[LOG] [AQ] drm: Explicit sync unsupported
[LOG] [AQ] drm: connector DP-2 crtc doesn't support CTM
[LOG] [AQ] drm: connector DP-2 crtc doesn't support HDR (0)
[LOG] [AQ] drm: connector DP-2 crtc doesn't support Colorspace (0)
[LOG] [AQ] drm: gpu /dev/dri/card1 becomes primary drm
[LOG] [AQ] DRM Dumb: created a dumb allocator
[LOG] [AQ] Starting the Aquamarine backend!
[LOG] [AQ] Starting the Wayland backend!
[ERR] [AQ] Wayland backend cannot start: wl_display_connect failed (is a wayland compositor running?)
[ERR] [AQ] Requested backend (wayland) could not start, enabling fallbacks
[ERR] [AQ] Implementation wayland failed, erasing.
[ERR] [AQ] Couldn't open a GBM device at fd 37
[ERR] [AQ] Cannot create a GBM Allocator: gbm failed to create a device.
[CRITICAL] [AQ] Cannot open backend: no allocator available
[CRITICAL] m_pAqBackend couldn't start! This usually means aquamarine could not find a GPU or encountered some issues. Make sure you're running either on a tty or on a Wayland session, NOT an X11 one.
[CRITICAL] Critical error thrown: CBackend::create() failed!

Hyprland.conf

and here is the hyprland.conf generated by the nix config:

exec-once = /nix/store/rys6134aqazihxi4g5ayc0ky829v7mf0-dbus-1.14.10/bin/dbus-update-activation-environment --systemd DISPLAY HYPRLAND_INSTANCE_SIGNATURE WAYLAND_DISPLAY XDG_CURRENT_DESKTOP && systemctl --user stop hyprland-session.target && systemctl --user start hyprland-session.target
$mod=SUPER
animations {
  enabled=true
}

decoration {
  rounding=10
}

general {
  gaps_in=5
}
bind=$mod, ENTER, exec, alacritty
bind=$mod, Q, killactive
bind=$mod, D, exec, wofi --show drun
env=LIBVA_DRIVER_NAME,nvidia
env=__GLX_VENDOR_LIBRARY_NAME,nvidia
env=WLR_RENDERER,vulkan
env=AQ_DRM_DEVICES,$HOME/.config/hypr/nvidia-gpu
exec-once=waybar
exec-once=mako
exec-once=nm-applet --indicator
``

Previously, I was having issues getting the primary nvidia gpu to be recognized by hyprland that seemed to be fixed by wrapping hyprland with nixGL and setting the environment variables in the hyprland settings rather than as nix session variables. However, this still occurred even when the AMD Integrated gpu was chosen by default. Any help is appreciated.

fufexan · 2025-06-14T08:36:19Z

fufexan
Jun 14, 2025
Maintainer

You have a NVIDIA GPU but your nixGL config uses nixGLIntel instead of nixGLNvidia or simply the default nixGL. Can you try using that?

4 replies

Tramscan Jun 16, 2025
Author

I ended up changing by config to use nixGLDefault or nixGLNvidia and nixGLNvidiaBumblebee, but I seem to have errors when wrapping hyprland and get the same error log when manually wrapping with either of those 3 packages, here's the error I get when I use home-manager switch --flake

`error:
… while evaluating a branch condition
at /nix/store/wwky6rfydvg8n4jpw4psh6x0wrd6c3qk-source/lib/lists.nix:142:18:
141| len = length list;
142| fold' = n: if n == len then nul else op (elemAt list n) (fold' (n + 1));
| ^
143| in

   … while calling the 'length' builtin
     at /nix/store/wwky6rfydvg8n4jpw4psh6x0wrd6c3qk-source/lib/lists.nix:141:13:
      140|     let
      141|       len = length list;
         |             ^
      142|       fold' = n: if n == len then nul else op (elemAt list n) (fold' (n + 1));

   … while evaluating the option `assertions':

   … while evaluating definitions from `/nix/store/q8rjps5w50vrrxz2vfhv8bna5v80dsqk-source/modules/misc/xdg-portal.nix':

   … while evaluating the option `xdg.portal.enable':

   … while evaluating definitions from `/nix/store/q8rjps5w50vrrxz2vfhv8bna5v80dsqk-source/modules/services/window-managers/hyprland.nix':

   … while evaluating the option `wayland.windowManager.hyprland.finalPortalPackage':

   … while evaluating the option `wayland.windowManager.hyprland.finalPackage':

   (stack trace truncated; use '--show-trace' to show the full, detailed trace)

   error: attribute 'override' missing
   at /nix/store/q8rjps5w50vrrxz2vfhv8bna5v80dsqk-source/modules/services/window-managers/hyprland.nix:84:11:
       83|         if cfg.package != null then
       84|           cfg.package.override { enableXWayland = cfg.xwayland.enable; }
         |           ^
       85|         else`

and here is my new default.nix file where I wrap hyprland:

`{ config, pkgs, lib, inputs, nixgl, ...}:

wayland.windowManager.hyprland = {
enable = true;
package = wrappedHyprland;

xwayland.enable = true;

settings = {
  "$mod" = "SUPER";
  bind = [
  "$mod, ENTER, exec, alacritty"
  "$mod, Q, killactive"
  "$mod, D, exec, wofi --show drun"
  ];
  env = [
    "LIBVA_DRIVER_NAME,nvidia"
    "__GLX_VENDOR_LIBRARY_NAME,nvidia"
    # It's also often helpful to include these for broader Wayland compatibility
  #  "NIXOS_OZONE_WL,1"      # For Electron apps (VSCode, Discord, etc.)
  #  "QT_QPA_PLATFORM,wayland" # For Qt apps
  #  "GDK_BACKEND,wayland"     # For GTK apps
#"GBM_BACKEND,nvidia-drm"
"WLR_RENDERER,vulkan"
  #  "XDG_CURRENT_DESKTOP,Hyprland" # Helps some apps recognize the DE
  #  "XDG_SESSION_TYPE,wayland" # Indicates Wayland session
  #  "XDG_SESSION_DESKTOP,Hyprland" # Indicates Wayland session
  #  "WLR_DRM_DEVICES,/dev/dri/card1:/dev/dri/card0"
#"AQ_DRM_DEVICES,/dev/dri/by-path/pci-0000:01:00.0-card"
"AQ_DRM_DEVICES,$HOME/.config/hypr/nvidia-gpu"
  ];

  # prefer_zero_gpu = true;


  general = {
gaps_in = 5;
  };

  decoration = {
rounding = 10;
  };

  animations = {
enabled = true;
  };

  exec-once = [
"waybar"
"mako"
"nm-applet --indicator"
  ];
};

};

gtk = {
enable = true;
theme = {
name = "Adwaita-dark";
package = pkgs.adwaita-icon-theme;
};
};

home.pointerCursor = {
enable = true;
package = pkgs.bibata-cursors;
name = "Bibata-Modern-Classic";
size = 24;
};

}`

and here's an error from when I manually wrap at runtime:

`nick@nick-kub-new-rig:~/.config/nix/home-manager/apps/hyprland$ cat ~/.cache/hyprland/hyprlandCrashReport3332.txt

Hyprland Crash Report

"stable"

Hyprland received signal 6(ABRT)
Version: 9958d29
Tag: v0.49.0
Date: 2025-05-08
Flags:

System info:
System name: Linux
Node name: nick-kub-new-rig
Release: 6.8.0-60-generic
Version: #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2

GPU:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:2786] (rev a1) (prog-if 00 [VGA controller])
11:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164e] (rev cb) (prog-if 00 [VGA controller])

os-release:
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy
Backtrace:
# | /home/nick/.nix-profile/bin/Hyprland(_Z12getBacktracev+0x5b) [0x82984b]
getBacktrace()
??:?
#1 | /home/nick/.nix-profile/bin/Hyprland(_ZN14NCrashReporter18createAndSaveCrashEi+0xbe5) [0x7261b5]
NCrashReporter::createAndSaveCrash(int)
??:?
#2 | /home/nick/.nix-profile/bin/Hyprland() [0x6732bd]
handleUnrecoverableSignal(int)
??:?
#3 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x41470) [0x775c33241470]
??
??:0
#4 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x99cdc) [0x775c33299cdc]
??
??:0
#5 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(gsignal+0x16) [0x775c332413c6]
??
??:0
#6 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(abort+0xd7) [0x775c3322893a]
??
??:0
#7 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xadc3d) [0x775c336adc3d]
??
??:0
#8 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xbf1ca) [0x775c336bf1ca]
??
??:0
#9 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(_ZSt10unexpectedv+0) [0x775c336ad7e9]
??
??:0
#1 | /nix/store/bj3hgpj5b1ajvw6jmr22d039i7rcm52y-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6(+0xbf447) [0x775c336bf447]
??
??:0
#11 | /home/nick/.nix-profile/bin/Hyprland() [0x834151]
throwError(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) [clone .cold]
??:?
#12 | /home/nick/.nix-profile/bin/Hyprland(_ZN11CCompositor10initServerENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi+0xf01) [0x6958c1]
CCompositor::initServer(std::__cxx11::basic_string<char, std::char_traits, std::allocator >, int)
??:?
#13 | /home/nick/.nix-profile/bin/Hyprland(main+0x96d) [0x8a5eed]
main
??:?
#14 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(+0x2a47e) [0x775c3322a47e]
??
??:0
#15 | /nix/store/cg9s562sa33k78m63njfn1rw47dp9z0i-glibc-2.40-66/lib/libc.so.6(__libc_start_main+0x89) [0x775c3322a539]
??
??:0
#16 | /home/nick/.nix-profile/bin/Hyprland(_start+0x25) [0x623ae5]
_start
??:?

Log tail:
[LOG] [AQ] drm: Mode 1: [email protected]
[LOG] [AQ] drm: Mode 2: [email protected]
[LOG] [AQ] drm: Mode 3: [email protected]
[LOG] [AQ] drm: Mode 4: [email protected]
[LOG] [AQ] drm: Mode 5: [email protected]
[LOG] [AQ] drm: Mode 6: [email protected]
[LOG] [AQ] drm: Mode 7: [email protected]
[LOG] [AQ] drm: Mode 8: [email protected]
[LOG] [AQ] drm: Mode 9: [email protected]
[LOG] [AQ] drm: Mode 10: [email protected]
[LOG] [AQ] drm: Mode 11: [email protected]
[LOG] [AQ] drm: Mode 12: [email protected]
[LOG] [AQ] drm: Mode 13: [email protected]
[LOG] [AQ] drm: Mode 14: [email protected]
[LOG] [AQ] drm: Mode 15: [email protected]
[LOG] [AQ] drm: Mode 16: [email protected]
[LOG] [AQ] drm: Mode 17: [email protected]
[LOG] [AQ] drm: Mode 18: [email protected]
[LOG] [AQ] drm: Mode 19: [email protected]
[LOG] [AQ] drm: Mode 20: [email protected]
[LOG] [AQ] drm: Mode 21: [email protected]
[LOG] [AQ] drm: Mode 22: [email protected]
[LOG] [AQ] drm: Mode 23: [email protected]
[LOG] [AQ] drm: Mode 24: [email protected]
[LOG] [AQ] drm: Physical size [Vector2D: x: 600, y: 340] (mm)
[LOG] [AQ] drm: Description LG Electronics 27GL850 008NTZNC9205 (DP-1)
[LOG] [AQ] drm: connector DP-1 crtc is capable of vrr: props.vrr_capable -> 99, crtc->props.vrr_enabled -> 24
[LOG] [AQ] drm: Explicit sync unsupported
[LOG] [AQ] drm: connector DP-1 crtc doesn't support CTM
[LOG] [AQ] drm: connector DP-1 crtc doesn't support HDR (0)
[LOG] [AQ] drm: connector DP-1 crtc doesn't support Colorspace (0)
[LOG] [AQ] drm: Connector DP-2 connected
[LOG] [AQ] drm: Connecting connector DP-2, CRTC ID 55
[LOG] [AQ] drm: Dumping detected modes:
[LOG] [AQ] drm: Mode 0: [email protected] (preferred)
[LOG] [AQ] drm: Mode 1: [email protected]
[LOG] [AQ] drm: Mode 2: [email protected]
[LOG] [AQ] drm: Mode 3: [email protected]
[LOG] [AQ] drm: Mode 4: [email protected]
[LOG] [AQ] drm: Mode 5: [email protected]
[LOG] [AQ] drm: Mode 6: [email protected]
[LOG] [AQ] drm: Mode 7: [email protected]
[LOG] [AQ] drm: Mode 8: [email protected]
[LOG] [AQ] drm: Mode 9: [email protected]
[LOG] [AQ] drm: Mode 10: [email protected]
[LOG] [AQ] drm: Mode 11: [email protected]
[LOG] [AQ] drm: Mode 12: [email protected]
[LOG] [AQ] drm: Mode 13: [email protected]
[LOG] [AQ] drm: Mode 14: [email protected]
[LOG] [AQ] drm: Mode 15: [email protected]
[LOG] [AQ] drm: Mode 16: [email protected]
[LOG] [AQ] drm: Mode 17: [email protected]
[LOG] [AQ] drm: Mode 18: [email protected]
[LOG] [AQ] drm: Mode 19: [email protected]
[LOG] [AQ] drm: Mode 20: [email protected]
[LOG] [AQ] drm: Mode 21: [email protected]
[LOG] [AQ] drm: Mode 22: [email protected]
[LOG] [AQ] drm: Mode 23: [email protected]
[LOG] [AQ] drm: Mode 24: [email protected]
[LOG] [AQ] drm: Physical size [Vector2D: x: 600, y: 340] (mm)
[LOG] [AQ] drm: Description LG Electronics LG ULTRAGEAR 208NTVSGT455 (DP-2)
[LOG] [AQ] drm: connector DP-2 crtc is capable of vrr: props.vrr_capable -> 100, crtc->props.vrr_enabled -> 24
[LOG] [AQ] drm: Explicit sync unsupported
[LOG] [AQ] drm: connector DP-2 crtc doesn't support CTM
[LOG] [AQ] drm: connector DP-2 crtc doesn't support HDR (0)
[LOG] [AQ] drm: connector DP-2 crtc doesn't support Colorspace (0)
[LOG] [AQ] drm: gpu /dev/dri/card1 becomes primary drm
[LOG] [AQ] DRM Dumb: created a dumb allocator
[LOG] [AQ] Starting the Aquamarine backend!
[LOG] [AQ] Starting the Wayland backend!
[ERR] [AQ] Wayland backend cannot start: wl_display_connect failed (is a wayland compositor running?)
[ERR] [AQ] Requested backend (wayland) could not start, enabling fallbacks
[ERR] [AQ] Implementation wayland failed, erasing.
[ERR] [AQ] Couldn't open a GBM device at fd 37
[ERR] [AQ] Cannot create a GBM Allocator: gbm failed to create a device.
[CRITICAL] [AQ] Cannot open backend: no allocator available
[CRITICAL] m_pAqBackend couldn't start! This usually means aquamarine could not find a GPU or encountered some issues. Make sure you're running either on a tty or on a Wayland session, NOT an X11 one.
[CRITICAL] Critical error thrown: CBackend::create() failed!`

fufexan Jun 16, 2025
Maintainer

Right, this does not work because the wrapped version no longer exposes override which is needed to apply options like .xwayland.enable. You can try leaving the package unwrapped, and adding a writeShellScriptBin to home.packages with the wrapped hyprland inside, called hyprland-wrapped. Not sure if it covers all the cases, but it may work.

Alternatively we'd have to update the module to add an option to wrap with nixGL.

Tramscan Jun 17, 2025
Author

I was able to solve that error by leaving the package unwrapped and adding the writeShellScriptBin wrapped hyprland to home.packages, but now I am getting an error I've seen before:

       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:19:19:
           18|       value = commonAttrs // {
           19|         outPath = builtins.getAttr outputName strict;
             |                   ^
           20|         drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:9:12:
            8|
            9|   strict = derivationStrict drvAttrs;
             |            ^
           10|

       … while evaluating derivation 'impure-nvidia-version-file'
         whose name attribute is located at /nix/store/wwky6rfydvg8n4jpw4psh6x0wrd6c3qk-source/pkgs/stdenv/generic/make-derivation.nix:461:13

       … while evaluating attribute 'time' of derivation 'impure-nvidia-version-file'
         at /nix/store/wnf3rly6jbw4ywqhzgn0vl6lk8hwgkg3-source/nixGL.nix:223:11:
          222|           # Add an impure parameter to force the rebuild on each access.
          223|           time = builtins.currentTime;
             |           ^
          224|           preferLocalBuild = true;

       error: attribute 'currentTime' missing
       at /nix/store/wnf3rly6jbw4ywqhzgn0vl6lk8hwgkg3-source/nixGL.nix:223:18:
          222|           # Add an impure parameter to force the rebuild on each access.
          223|           time = builtins.currentTime;
             |                  ^
          224|           preferLocalBuild = true;

I did some digging and made sure that my nixGL version was up-to-date but I'm not exactly sure how to solve this. Maybe it is a nixGL bug? I have tried to switch between the different openGL wrappers of nixGL with no luck. For info, below is my home.nix

{ config, pkgs, lib, inputs, nixgl, ... }:

let
  nixGLPackage = nixgl.packages.${pkgs.system}.nixGLNvidia;
  nixGLWrap = pkg: pkgs.runCommand "${pkg.name}-nixgl-wrapper" {} ''
    mkdir -p $out/bin
    for bin in ${pkg}/bin/*; do
      wrapped_bin=$out/bin/$(basename $bin)
      echo "#!${pkgs.bash}/bin/bash" > $wrapped_bin
      echo "exec ${nixGLPackage}/bin/nixGLNvidia $bin \"\$@\"" >> $wrapped_bin
      chmod +x $wrapped_bin
    done
  '';
  pkgsMesa24_2_7 = import inputs.nixpkgs-mesa-24-2-7 {
    inherit (pkgs) system;
  };
  wrappedAlacritty = nixGLWrap pkgs.alacritty;
  hyprlandModule = import ./apps/hyprland/default.nix { inherit pkgs inputs nixgl config lib; };
in
rec {
  # Home Manager needs a bit of information about you and the paths it should
  # manage.
  home.username = "nick";
  home.homeDirectory = "/home/nick";


  # This value determines the Home Manager release that your configuration is
  # compatible with. This helps avoid breakage when a new Home Manager release
  # introduces backwards incompatible changes.
  #
  # You should not change this value, even if you update Home Manager. If you do
  # want to update the value, then make sure to first check the Home Manager
  # release notes.

  home.stateVersion = "24.05"; # Please read the comment before changing.
#  system = {
#  	autoUpgrade = {
#		enable = true;
#		dates = "daily";
#		allowReboot = false;
#		};
#	};

  nixpkgs.config = {
    allowUnfree = true;
  };

  nixpkgs.overlays = [
    (final: prev: {
      mesa = pkgsMesa24_2_7.mesa;
    })
  ];

  imports = [
  	./apps/i3
	./apps/nixvim
	./apps/alacritty
	#(builtins.fetchurl {
	#  url = "https://raw.githubusercontent.com/Smona/home-manager/nixgl-compat/modules/misc/nixgl.nix";
	#  sha256 = "f14874544414b9f6b068cfb8c19d2054825b8531f827ec292c2b0ecc5376b305";
        #})
	./apps/hyprland
  ];


  nixpkgs.config.allowUnfreePredicate = (pkg: true);
  # The home.packages option allows you to install Nix packages into your
  # environment.
  home.packages = with pkgs; [
  	neofetch
	vesktop
	picom
	# i3blocks
	waybar
	protonup-qt
	mujoco
	freecad
	mesa
	#nixGLPackage
	wrappedAlacritty
	gh
	pavucontrol
	zenith-nvidia
	obsidian
	libva
	egl-wayland
	wayland
	wayland-protocols
	libglvnd
	xwayland
	#hyprlandModule.hyprlandWrapper
	# hyprland
    # # You can also create simple shell scripts directly inside your
    # # configuration. For example, this adds a command 'my-hello' to your
    # # environment:
    # (pkgs.writeShellScriptBin "my-hello" ''
    #   echo "Helloauto.nixGLDefault: Tries to auto-detect and install Nvidia, if not, fallback to mesa. Recommended. Invoke with nixGL program., ${config.home.username}!"
    # '')
  ];
  # Home Manager is pretty good at managing dotfiles. The primary way to manage
  # plain files is through 'home.file'.
  home.file = {
    # # Building this configuration will create a copy of 'dotfiles/screenrc' in
    # # the Nix store. Activating the configuration will then make '~/.screenrc' a
    # # symlink to the Nix store copy.
    # ".screenrc".source = dotfiles/screenrc;

    # # You can also set the file content immediately.
    # ".gradle/gradle.properties".text = ''
    #   org.gradle.console=verbose
    #   org.gradle.daemon.idletimeout=3600000
    # '';
  };

  # Home Manager can also manage your environment variables through
  # 'home.sessionVariables'. These will be explicitly sourced when using a
  # shell provided by Home Manager. If you don't want to manage your shell
  # through Home Manager then you have to manually source 'hm-session-vars.sh'
  # located at either
  #
  #  ~/.nix-profile/etc/profile.d/hm-session-vars.sh
  #
  # or
  #
  #  ~/.local/state/nix/profiles/profile/etc/profile.d/hm-session-vars.sh
  #
  # or
  #
  #  /etc/profiles/per-user/nick/etc/profile.d/hm-session-vars.sh
  #
  home.sessionVariables = {
    SUDO_EDITOR = "nvim";
    SYSTEMD_EDITOR = "nvim";
    EDITOR = "nvim";
    VISUAL = "nvim";
    TERMINAL = "alacritty";
    LOCALE_ARCHIVE = "${pkgs.glibcLocales}/lib/locale/locale-archive";

    #Hyprland NVIDIA Variables
    #WLR_RENDERER = "vulkan";
    #GBM_BACKEND = "nvidia-drm";
    #__GLX_VENDOR_LIBRARY_NAME = "nvidia";
    #LIBVA_DRIVER_NAME = "nvidia"; # For hardware video acceleration
    #QT_QPA_PLATFORM = "wayland";
    #GDK_BACKEND = "wayland";
    #XDG_CURRENT_DESKTOP = "Hyprland";
    #XDG_SESSION_TYPE = "wayland";
    #XDG_SESSION_DESKTOP = "Hyprland";
    #AQ_DRM_DEVICES = "/dev/dri/by-path/pci-0000:01:00.0-card:/dev/dri/by-path/pci-0000:11:00.0-card";
    #WLR_DRM_DEVICES = "/dev/dri/by-path/pci-0000:01:00.0-card:/dev/dri/by-path/pci-0000:11:00.0-card";
  };

  # Let Home Manager install and manage itself.
  programs.home-manager.enable = true;

  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" "auto-allocate-uids"];
      auto-optimise-store = true;
      auto-allocate-uids = true;
      max-jobs = "auto";
      trusted-users = [ "nick" ];
      extra-experimental-features = ["auto-allocate-uids"];
    };
    package = pkgs.nix;
  };

  # Remove the nixpkgs.overlays section if it exists

  # Your remaining configurations...

  # Configure Alacritty
  programs.alacritty = {
    enable = true;
    package = wrappedAlacritty;
  };

}

and here is my default.nix:

{ config, pkgs, lib, inputs, nixgl, ...}:

let
  nixGL = inputs.nixgl.packages.${pkgs.system}.nixGLNvidia;
  hyprlandWrapper = pkgs.writeShellScriptBin "hyprland-wrapped" ''
    export GBM_BACKEND=nvidia-drm
    export LIBVA_DRIVER_NAME=nvidia
    export __GLX_VENDOR_LIBRARY_NAME=nvidia
    exec ${nixGL}/bin/nixGLNvidia ${pkgs.hyprland}/bin/Hyprland "$@"
  '';
in
{
  home.packages = [ hyprlandWrapper ];
  home.sessionVariables = {
      WLR_RENDERER = "vulkan";
      GBM_BACKEND = "nvidia-drm";
      LIBVA_DRIVER_NAME = "nvidia";
      __GLX_VENDOR_LIBRARY_NAME = "nvidia";
      # It's also often helpful to include these for broader Wayland compatibility
      NIXOS_OZONE_WL = "1";      # For Electron apps (VSCode, Discord, etc.)
      QT_QPA_PLATFORM = "wayland"; # For Qt apps
      GDK_BACKEND = "wayland";     # For GTK apps
      XDG_CURRENT_DESKTOP = "Hyprland"; # Helps some apps recognize the DE
      XDG_SESSION_TYPE = "wayland"; # Indicates Wayland session
      XDG_SESSION_DESKTOP = "Hyprland"; # Indicates Wayland session
  };

  wayland.windowManager.hyprland = {
    enable = true;
    package = pkgs.hyprland;
    xwayland.enable = true;
    settings = {
      "$mod" = "SUPER";
      bind = [
      "$mod, ENTER, exec, alacritty"
      "$mod, Q, killactive"
      "$mod, D, exec, wofi --show drun"
      ];
      env = [
	"LIBVA_DRIVER_NAME,nvidia"
	"__GLX_VENDOR_LIBRARY_NAME,nvidia"
	# It's also often helpful to include these for broader Wayland compatibility
      #  "NIXOS_OZONE_WL,1"      # For Electron apps (VSCode, Discord, etc.)
      #  "QT_QPA_PLATFORM,wayland" # For Qt apps
      #  "GDK_BACKEND,wayland"     # For GTK apps
	#"GBM_BACKEND,nvidia-drm"
	"WLR_RENDERER,vulkan"
      #  "XDG_CURRENT_DESKTOP,Hyprland" # Helps some apps recognize the DE
      #  "XDG_SESSION_TYPE,wayland" # Indicates Wayland session
      #  "XDG_SESSION_DESKTOP,Hyprland" # Indicates Wayland session
      #  "WLR_DRM_DEVICES,/dev/dri/card1:/dev/dri/card0"
	#"AQ_DRM_DEVICES,/dev/dri/by-path/pci-0000:01:00.0-card"
	"AQ_DRM_DEVICES,$HOME/.config/hypr/nvidia-gpu"
      ];

      # prefer_zero_gpu = true;


      general = {
	gaps_in = 5;
      };

      decoration = {
	rounding = 10;
      };

      animations = {
	enabled = true;
      };

      exec-once = [
	"waybar"
	"mako"
	"nm-applet --indicator"
      ];
    };

  };

  gtk = {
    enable = true;
    theme = {
      name = "Adwaita-dark";
      package = pkgs.adwaita-icon-theme;
    };
  };

  home.pointerCursor = {
    enable = true;
    package = pkgs.bibata-cursors;
    name = "Bibata-Modern-Classic";
    size = 24;
  };

}

fufexan Jun 17, 2025
Maintainer

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Crashing after starting Wayland backend, ubuntu/nix #10737

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Crashing after starting Wayland backend, ubuntu/nix #10737

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Tramscan Jun 14, 2025

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flake.nix:

Crash Report:

Hyprland.conf

Replies: 1 comment · 4 replies

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fufexan Jun 14, 2025 Maintainer

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Tramscan Jun 16, 2025 Author

xwayland.enable = true;

`nick@nick-kub-new-rig:~/.config/nix/home-manager/apps/hyprland$ cat ~/.cache/hyprland/hyprlandCrashReport3332.txt

Hyprland Crash Report

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fufexan Jun 16, 2025 Maintainer

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fufexan Jun 17, 2025 Maintainer

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Jun 14, 2025

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