Try this one
If youre using ubuntu its a open os right!! try to go to device information like in windows devicemanager. There are some application that you need to install before you can saw your device on a pc. Try touse cobra driver pack and install the device missing.. You should be connected to the internet to instal the device because the cobra driver pack is 2010 application while the android cellphone is a 2011 model. It just like its a program for helping you to determine what you need to install that its free...