How to enable a USB-Serial connection with putty on linux Mint. Home OS Linux How to enable a USB-Serial connection with putty on linux Mint. Prolific PL2303 USB to serial adaptor driver [20] pl2303: disagrees about version of symbol module_layout:. Mar 4, 2015 - sudo putty /dev/ttyUSB0 -serial -sercfg 9600,8,n,1,N. Worked for me.
Another newbie to Linux question here. On Mac and Windows my USB to Serial converters simply show up when I cycle through the Serial Ports: For i As Integer = 0 to System.SerialPortCount - 1 dim s as string = System.SerialPort(i).Name //Do stuff with Serial port Next However, in Linux Mint this is not happening. This list is blank. In terminal if I type lsusb I get Bus 002 Device 007: ID 067b:2303 Prolific Technology, Inc. Not an expert at Linux, but some thoughts / notes. 1 ) I take it this particular USB converter has tested out OK on Windows or Mac. 2 ) Keeney [ 79.894335] usb 2-2.2: pl2303 converter now attached to ttyUSB0 [ 2026.596446] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0 [ 2043.653543] usb 2-2.2: pl2303 converter now attached to ttyUSB0 [ 3078.017310] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0 [ 3089.347848] usb 2-2.2: pl2303 converter now attached to ttyUSB0 I'm guessing that these mean you unplugged and replugged the device a couple of times - if not it's strange.
3) Keeney [ 3665.543535] pl2303 ttyUSB0: pl2303_get_line_request - failed: -110 [ 3666.217760] pl2303 ttyUSB0: pl2303_set_line_request - failed: -110 [ 3667.216539] pl2303 ttyUSB0: pl2303_set_control_lines - failed: -110 These don't look great: I have tried Googling, but no luck so far. 4) Keeney So I *think* the OS is recognizing the USB to Serial converter but the Xojo app is not. If it exists in /dev then Linux at least *thinks* it has - the following command will show a line if it has.
Ls -l /dev/ttyUSB0. ( The l characters are lowercase L ) If it does not, then the driver is not loading properly 5) I don't think it is a privilege issue as If I look at serial ports with Xojo I still see them OK as a normal user, but need privilege to actually open them.
For each guest there is a reserved parking space available. 
Privilege issue is typically solved by adding the user to the dialout group - ( or running Xojo apps with root privileges ). Is there anything connected to the usb-serial? You can test if it works using the program 'screen' screen /dev/ttyUSB0 9600 should open a terminal and connect it.
If there is nothing connected to the serial port, then when you type you should see nothing returned. If you then connect pin 2 to pin 3 (anything metal will do, like the end of a screwdriver, or a biro ) you should see what you type on the screen, this proves that what goes out of the tx pin, is received at the rx pin. It also proves the serialport is working and the driver is good.