I have a Samsung Galaxy GT-S7562 with Android 4.0.4 and Ubuntu 12.04 on a Dell Vostro 1510.
I have just found out I cannot transfer files from Android to Ubuntu with a USB connection because the former uses MTP. gMTP didn't help.
I also found out Ubuntu can't get my Bluetooth working either. So I can't transfer files this way either.
Can I use make a transfer via a wireless network? What other options are left?