Plymouth

Plymouth 是一个在启动过程早期运行的应用程序，提供图形启动动画。它被大多数面向桌面的 Linux 发行版所使用。

Preparation

Plymouth primarily uses KMS to display graphics, but on UEFI systems it can utilize the EFI framebuffer.

If you have neither KMS nor a framebuffer, Plymouth will fall back to text-mode.

Installation

Basic Config

{
  boot = {
    plymouth = {
      enable = true;
    };

    # Enable "Silent boot"
    consoleLogLevel = 3;
    initrd.verbose = false;
    kernelParams = [
      "quiet"
      "rd.udev.log_level=3"
      "rd.systemd.show_status=auto"
    ];

    # Hide the OS choice for bootloaders.
    # It's still possible to open the bootloader list by pressing any key
    # It will just not appear on screen unless a key is pressed
    loader.timeout = 0;
  };
}

用法

Changing the theme

Plymouth comes with a selection of themes:

1. BGRT: A variation of Spinner that keeps the OEM logo if available (BGRT stands for Boot Graphics Resource Table)
2. Fade-in: "Simple theme that fades in and out with shimmering stars"
3. Glow: "Corporate theme with pie chart boot progress followed by a glowing emerging logo"
4. Script: "Script example plugin" (Despite the description seems to be a quite nice Arch logo theme)
5. Solar: "Space theme with violent flaring blue star"
6. Spinner: "Simple theme with a loading spinner"
7. Spinfinity: "Simple theme that shows a rotating infinity sign in the center of the screen"
8. Tribar: "Text mode theme with tricolor progress bar"
9. Text: "Text mode theme with tricolor progress bar"
10. Details: "Verbose fallback theme"

NixOS sets the default theme to bgrt. You can change the theme with `boot.plymouth.theme`:

{
  boot = {
    plymouth = {
      enable = true;
      theme = "solar";
    };
  };
}

Install new themes

例如，您可以通过以下代码使用 collection 中的启动动画：

❄︎ configuration.nix

{ pkgs, ... }: {
  boot = {
    plymouth = {
      enable = true;
      theme = "rings";
      themePackages = with pkgs; [
        # 默认情况下，我们会安装所有主题。
        (adi1090x-plymouth-themes.override {
          selected_themes = [ "rings" ];
        })
      ];
    };

    # 启用“静默启动”
    consoleLogLevel = 3;
    initrd.verbose = false;
    kernelParams = [
      "quiet"
      "rd.udev.log_level=3"
      "rd.systemd.show_status=auto"
    ];

    # 隐藏引导加载程序的操作系统选择选项。
    # 仍然可以通过按任意键打开引导加载程序列表。
    # 除非按下某个键，否则它不会显示在屏幕上。
    loader.timeout = 0;
  };
}

HiDPI

Edit the configuration file:

{
  boot = {
    plymouth = {
      enable = true;
      extraConfig = ''
        [Daemon]
        DeviceScale=an-integer-scaling-factor
      '';
    };
  };
}

Tips and tricks

Show boot messages

在图形界面启动过程中，可以用退出键（或者说 ESC）在文本模式和 Playmouth 界面中切换。

Troubleshooting

LUKS Encryption

如果您使用 LUKS 加密，密码提示可能会回退到文本模式。虽然默认的 bgrt 主题支持图形化密码输入，但并非所有主题都支持此功能。

See Also

• Arch Wiki