Greetings,

Platform:  I5 Laptop running Ubuntu 14.04.  Prolific PL2303 USB to Serial programming cable.

In the past, I have been able to access the UV-5R radio's configuration.

The laptop's OS is up to date as well as the Chirp Daily Builds

dmesg:   

[ 1900.825659] usb 3-2: new full-speed USB device number 3 using xhci_hcd

[ 1900.842467] usb 3-2: New USB device found, idVendor=067b, idProduct=2303

[ 1900.842475] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[ 1900.842480] usb 3-2: Product: USB-Serial Controller

[ 1900.842485] usb 3-2: Manufacturer: Prolific Technology Inc.

[ 1900.943247] usbcore: registered new interface driver usbserial

[ 1900.943264] usbcore: registered new interface driver usbserial_generic

[ 1900.943278] usbserial: USB Serial support registered for generic

[ 1900.967300] usbcore: registered new interface driver pl2303

[ 1900.967333] usbserial: USB Serial support registered for pl2303

[ 1900.967357] pl2303 3-2:1.0: pl2303 converter detected

[ 1900.968085] usb 3-2: pl2303 converter now attached to ttyUSB0

        #System sees the interface device#

Attempt to read radio's configuration:

"Due to the fact that the manufacturer continues to release new versions of the firmware with obscure and hard-to-track changes, this driver may not work with your device. Thus far and to the best knowledge of the author, no UV-5R radios have been harmed by using CHIRP. However, proceed at your own risk!"

And then results in:

"could not open port /dev/ttyusb0: [Errno 2] No such file or directory: '/dev/ttyusb0"