I am trying to get a USB to Serial converter working with my Slackware system.
When I plug the converter into a USB port it works exactly as one would expect and hope, in /var/log/messages I see:-
Aug 6 15:34:16 home kernel: usb 3-2: new full speed USB device using uhci_hcd and address 2 Aug 6 15:34:16 home kernel: usb 3-2: configuration #1 chosen from 1 choice Aug 6 15:34:16 home kernel: usbcore: registered new driver usbserial Aug 6 15:34:16 home kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for generic Aug 6 15:34:16 home kernel: usbcore: registered new driver usbserial_generic Aug 6 15:34:16 home kernel: drivers/usb/serial/usb-serial.c: USB Serial Driver core Aug 6 15:34:16 home kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303 Aug 6 15:34:16 home kernel: pl2303 3-2:1.0: pl2303 converter detected Aug 6 15:34:16 home kernel: usb 3-2: pl2303 converter now attached to ttyUSB0 Aug 6 15:34:16 home kernel: usbcore: registered new driver pl2303 Aug 6 15:34:16 home kernel: drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver
if I unplug it and plug it back in I see:-
Aug 6 15:53:18 home kernel: usb 3-2: USB disconnect, address 2 Aug 6 15:53:18 home kernel: pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0 Aug 6 15:53:18 home kernel: pl2303 3-2:1.0: device disconnected Aug 6 15:53:41 home kernel: usb 3-2: new full speed USB device using uhci_hcd and address 3 Aug 6 15:53:41 home kernel: usb 3-2: configuration #1 chosen from 1 choice Aug 6 15:53:41 home kernel: pl2303 3-2:1.0: pl2303 converter detected Aug 6 15:53:41 home kernel: usb 3-2: pl2303 converter now attached to ttyUSB0
The only (?!) problem is that I don't actually get a /dev/ttyUSB0, so what's wrong and/or how can I diagnose it?