gistfile1.txt

# No serial cable:

Mar 28 20:55:32 mbp-buntu-work kernel: [121438.332839] usb 1-1.4: new full-speed USB device number 65 using ehci_hcd
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.427006] usb 1-1.4: New USB device found, idVendor=067b, idProduct=2303
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.427014] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.427018] usb 1-1.4: Product: USB-Serial Controller
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.427022] usb 1-1.4: Manufacturer: Prolific Technology Inc.
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.427579] pl2303 1-1.4:1.0: pl2303 converter detected
Mar 28 20:55:32 mbp-buntu-work mtp-probe: checking bus 1, device 65: "/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1.4"
Mar 28 20:55:32 mbp-buntu-work kernel: [121438.429210] usb 1-1.4: pl2303 converter now attached to ttyUSB0
Mar 28 20:55:32 mbp-buntu-work mtp-probe: bus: 1, device: 65 was not an MTP device

# Serial side connected, ERROR:

Mar 28 20:54:57 mbp-buntu-work kernel: [121402.766508] usb 1-1.4: new full-speed USB device number 60 using ehci_hcd
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.860576] usb 1-1.4: New USB device found, idVendor=067b, idProduct=2303
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.860584] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.860588] usb 1-1.4: Product: USB-Serial Controller
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.860592] usb 1-1.4: Manufacturer: Prolific Technology Inc.
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.861173] pl2303 1-1.4:1.0: pl2303 converter detected
Mar 28 20:54:57 mbp-buntu-work mtp-probe: checking bus 1, device 60: "/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1.4"
Mar 28 20:54:57 mbp-buntu-work kernel: [121402.862953] usb 1-1.4: pl2303 converter now attached to ttyUSB0
Mar 28 20:54:57 mbp-buntu-work mtp-probe: bus: 1, device: 60 was not an MTP device