Application under Wine cannot access any serial ports?

If you are using the Wine compatibility layer to run Windows applications on your Linux system, you may encounter an issue where the application cannot access any serial ports. This can be frustrating, especially if you rely on serial communication for devices like modems, printers, or industrial equipment. In this article, we will explore why this problem occurs and provide some possible solutions.

Why can't applications under Wine access serial ports?

By default, Wine does not provide direct access to serial ports on the host system. This is because accessing hardware devices directly can be a security risk and may interfere with the stability of the system. Therefore, Wine restricts access to certain resources, including serial ports.

Possible solutions

Fortunately, there are a few workarounds you can try to enable serial port access for applications running under Wine:

1. Use a virtual serial port emulator

One option is to use a virtual serial port emulator, such as Virtual Serial Port Driver or Eltima Virtual Serial Port Driver. These tools create virtual serial ports on your system and allow applications to communicate with them. You can then configure Wine to use these virtual ports instead of the physical ones.

2. Configure Wine to allow serial port access

If you are comfortable with modifying Wine's configuration, you can manually enable serial port access. Open a terminal and run the following command to edit the Wine configuration file:

sudo nano ~/.wine/system.reg

Within the file, locate the following section:

[Hardware\\Devicemap\\Serialcomm]
  1231984861
  @=<hex values>

Add the serial port you want to enable access to by appending a line in the following format:

COM<port number>=<serial port path>

Replace <port number> with the desired COM port number (e.g., COM1) and <serial port path> with the path to the physical serial port device (e.g., /dev/ttyS0). Save the file and exit the text editor.

3. Use a Windows virtual machine

If the above solutions don't work or are too complex, you can consider running a Windows virtual machine on your Linux system. Virtualization software like VirtualBox or VMware allows you to install a full-fledged Windows operating system within your Linux environment. With a Windows VM, you can run your applications natively and access the serial ports without any compatibility issues.

Conclusion

While Wine provides excellent compatibility for running Windows applications on Linux, accessing serial ports can be a challenge. By using virtual serial port emulators, configuring Wine, or running a Windows virtual machine, you can overcome this limitation and ensure your applications can communicate with serial devices seamlessly.