runtime: System.IO.Ports.SerialPort not working on Linux arm64

Description

'Unable to load shared library ‘libSystem.IO.Ports.Native’ or one of its dependencies

Similar to issue #63187 though Linux versions differ. Presumably the same root issue.

Reproduction Steps

Create new console app (.net 6.0) Add System.IO.Ports NuGet.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <PlatformTarget>AnyCPU</PlatformTarget>
    <RuntimeIdentifier>linux-arm</RuntimeIdentifier>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="System.IO.Ports" Version="6.0.0" />
  </ItemGroup>

</Project>

using System.IO.Ports;

namespace RaspberryPiIoTTestApp02
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");

            string[] ports = SerialPort.GetPortNames();
            // Display each port name to the console.
            foreach (string p in ports)
            {
                Console.WriteLine($"GetSerialPorts(): {p}");
            }

            string _portName = "/dev/ttyAMA1";
            SerialPort port = new SerialPort(_portName);
            port.BaudRate = 19200;
            port.DataBits = 8;
            port.Parity = Parity.Even;
            port.StopBits = StopBits.One;
            port.Open();
        }
    }
}

Expected behavior

Program runs.

Prints out available serial ports, (in my case)

GetSerialPorts(): /dev/ttyAMA1
GetSerialPorts(): /dev/ttyAMA2
GetSerialPorts(): /dev/ttyAMA0

Opens port /dev/ttyAMA1

Actual behavior

Program runs.

Prints out available serial ports, (in my case)

GetSerialPorts(): /dev/ttyAMA1
GetSerialPorts(): /dev/ttyAMA2
GetSerialPorts(): /dev/ttyAMA0

Exception at port.Open();

Exception thrown: 'System.DllNotFoundException' in System.IO.Ports.dll
An unhandled exception of type 'System.DllNotFoundException' occurred in System.IO.Ports.dll: 'Unable to load shared library 'libSystem.IO.Ports.Native' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSystem.IO.Ports.Native: cannot open shared object file: No such file or directory'
Stack trace:
 >   at Interop.Serial.SerialPortOpen(String name)
 >   at System.IO.Ports.SafeSerialDeviceHandle.Open(String portName)
 >   at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace)
 >   at System.IO.Ports.SerialPort.Open()
 >   at RaspberryPiIoTTestApp02.Program.Main(String[] args) in C:\Users\georg\OneDrive\Documents\Visual Studio\2022 - vs22\RaspberryPiIoTTestApp02\RaspberryPiIoTTestApp02\Program.cs:line 17

Setting LD_DEBUG=all gives some info though unfortunately its all a bit beyond me!

      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/libSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/libSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=libSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	find library=libSystem.IO.Ports.Native.so [0]; searching
      5612:	 search cache=/etc/ld.so.cache
      5612:	 search path=/lib/aarch64-linux-gnu:/usr/lib/aarch64-linux-gnu:/lib:/usr/lib		(system search path)
      5612:	  trying file=/lib/aarch64-linux-gnu/libSystem.IO.Ports.Native.so
      5612:	  trying file=/usr/lib/aarch64-linux-gnu/libSystem.IO.Ports.Native.so
      5612:	  trying file=/lib/libSystem.IO.Ports.Native.so
      5612:	  trying file=/usr/lib/libSystem.IO.Ports.Native.so
      5612:	
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/liblibSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/liblibSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/liblibSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=liblibSystem.IO.Ports.Native.so [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	find library=liblibSystem.IO.Ports.Native.so [0]; searching
      5612:	 search cache=/etc/ld.so.cache
      5612:	 search path=/lib/aarch64-linux-gnu:/usr/lib/aarch64-linux-gnu:/lib:/usr/lib		(system search path)
      5612:	  trying file=/lib/aarch64-linux-gnu/liblibSystem.IO.Ports.Native.so
      5612:	  trying file=/usr/lib/aarch64-linux-gnu/liblibSystem.IO.Ports.Native.so
      5612:	  trying file=/lib/liblibSystem.IO.Ports.Native.so
      5612:	  trying file=/usr/lib/liblibSystem.IO.Ports.Native.so
      5612:	
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/libSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/libSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=libSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	find library=libSystem.IO.Ports.Native [0]; searching
      5612:	 search cache=/etc/ld.so.cache
      5612:	 search path=/lib/aarch64-linux-gnu:/usr/lib/aarch64-linux-gnu:/lib:/usr/lib		(system search path)
      5612:	  trying file=/lib/aarch64-linux-gnu/libSystem.IO.Ports.Native
      5612:	  trying file=/usr/lib/aarch64-linux-gnu/libSystem.IO.Ports.Native
      5612:	  trying file=/lib/libSystem.IO.Ports.Native
      5612:	  trying file=/usr/lib/libSystem.IO.Ports.Native
      5612:	
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/liblibSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/liblibSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=/home/pi/vsdbg/RaspberryPiIoTTestApp02/liblibSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	
      5612:	file=liblibSystem.IO.Ports.Native [0];  dynamically loaded by /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.8/libcoreclr.so [0]
      5612:	find library=liblibSystem.IO.Ports.Native [0]; searching
      5612:	 search cache=/etc/ld.so.cache
      5612:	 search path=/lib/aarch64-linux-gnu:/usr/lib/aarch64-linux-gnu:/lib:/usr/lib		(system search path)
      5612:	  trying file=/lib/aarch64-linux-gnu/liblibSystem.IO.Ports.Native
      5612:	  trying file=/usr/lib/aarch64-linux-gnu/liblibSystem.IO.Ports.Native
      5612:	  trying file=/lib/liblibSystem.IO.Ports.Native
      5612:	  trying file=/usr/lib/liblibSystem.IO.Ports.Native
      5612:	

Note that the exception appears on port.Open(); not when an instance of SerialPort is created or when we’re getting all available serial ports.

Regression?

Unknown though though the notnet/iot team have example code for Controlling Arduino with .NET using Raspberry Pi via serial port here using System.IO.Ports -v 4.6.0-preview.18571.3. It may be that they are using ARM (32-bit) that is unaffected by this or it is a regression.

Known Workarounds

Unknown though some people have reported work arounds in issue #63187.

Configuration

Which version of .NET is the code running on? .NET 6.0 What OS and version, and what distro if applicable? Raspberry Pi OS - 64-bit - Lite What is the architecture (x64, x86, ARM, ARM64)? ARM64 Do you know whether it is specific to that configuration? It appears to be affecting other versions of linux through similar issues #63187

Other information

No response