DRM启动步骤(Ubuntu18.04Server版本 虚拟机测试OK)
Avalonia官方参考文档：https://docs.avaloniaui.net/docs/next/guides/platforms/rpi/running-on-raspbian-lite-via-drm

1.Linux端运行命令
 sudo apt update
 sudo apt upgrade
 sudo reboot
 sudo apt - get install libgbm1 libgl1 - mesa - dri libegl1 - mesa libinput10

2.安装测试工具测试(出现一个彩色立方体说明环境安装完成)
 sudo apt-get install kmscube
 sudo kmscube

3.安装.net运行时(参考网址：https://learn.microsoft.com/zh-cn/dotnet/core/install/linux?WT.mc_id=dotnet-35129-website)

4.新建一个Avalonia项目，nuget里面添加Avalonia.LinuxFramebuffer包

5.添加StartLinuxDrm代码(不知道怎么添加看Semi.Avalonia.Demo.Drm项目代码)

6.发布程序到Linux(安装.net，怎么运行这些省略)
            
7.运行 ./Semi.Avalonia.Demo.Drm --drm

报错处理：

1.报错内容
    Unhandled exception. Avalonia.Markup.Xaml.XamlLoadException: No precompiled XAML found for avares
    ://Semi.Avalonia/Themes/Light/Light.axaml (baseUri: avares://Semi.Avalonia/Themes/Index.axaml), m
    ake sure to specify x:Class and include your XAML file as AvaloniaResource
 解决方法：
    如果使用Semi发布文件不要裁剪，如果裁剪会报错
         

2.报错内容
    Unhandled exception. System.TypeInitializationException: The type initializer for 'SkiaSharp.SKImageInfo' threw an exception.
    --->System.DllNotFoundException: Unable to load shared library 'libSkiaSharp' or one of its dependencies.In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSkiaSharp: cannot open shared object file: No such file or directory
    at SkiaSharp.SkiaApi.sk_colortype_get_default_8888()
    at SkiaSharp.SKImageInfo..cctor()
解决方法：
    Linux命令行安装一下 apt-get install -y libfontconfig1
    参考网址：https://github.com/mono/SkiaSharp/issues/509

3.报错内容
    Permission denied
解决方法：
    sudo chmod +x ./Semi.Avalonia.Demo.Drm