I can't seem to receive data to the ArduinoStudio serial monitor on ubuntu 14.04
By default, on a linux system without specific 
udev binding rules to rename the device into something non standard, the FTDI driver should map the usb to serial port on /dev/ttyUSB* and not to /dev/ttbACM*. I suspect that you were just looking in the wrong place.
I think it defaults to /dev/ttyUSB* for any usb to serial dongle:

usb-serial.c:   usb_serial_tty_driver-&gt;name = "ttyUSB";