After the minicom configuration is complete, unable to open the serial port information connected to the development board [resolved]

After the minicom configuration is complete, you cannot open the serial port information connected to the development board [resolved] -- Linux general technology-Linux programming and kernel information. The following is the details. The minicom settings are complete, but you still cannot open the serial port information connected to the development board. in WINDOWS, you can.
Enter minicom in the LINUX command line and the following information will not change. I reset a lot of information on this development board, and I have configured minicom before, let me help you see how it works. thank you.
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Compiled on Jul 26 2006, 06:38:09.

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If you do not perform well according to the conventional methods on the Internet, such as ttyS0, ttyS1, ttyUSB0, and 115200 8N1, and so on, you can reinstall the package, I found this in Redhat9. I chose more packages in the application, mainly the network service configuration, and then restarted the virtual machine. now I set the serial port according to the previous method, in this way, the problem can be solved. Don't worry about the problem. there will always be a solution, from hardware to software... Another problem is that ttyS0 is not necessarily the corresponding COM1. if something goes wrong, try more. it doesn't matter!