CHIRP

I am a newbie and trying to set my brand new baofeng uv-5ra with ubuntu 15.04.

chirp software installation is ok (latest version - chirp-daily-20170124 )

I just plugged in the USB cable and issued the dmesg command to the console, so my UV-5R cable works and has a driver running on /dev/ttyUSB0

: Manufacturer: Prolific Technology Inc.
[17542.197212] pl2303 6-1:1.0: pl2303 converter detected
[17542.209348] usb 6-1: pl2303 converter now attached to ttyUSB0
[18188.236128] usb 6-1: USB disconnect, device number 6
[18188.236359] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[18188.236378] pl2303 6-1:1.0: device disconnected
[18193.432037] usb 6-1: new full-speed USB device number 7 using uhci_hcd
[18193.601031] usb 6-1: New USB device found, idVendor=067b, idProduct=2303
[18193.601037] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[18193.601040] usb 6-1: Product: USB-Serial Controller
[18193.601042] usb 6-1: Manufacturer: Prolific Technology Inc.
[18193.604159] pl2303 6-1:1.0: pl2303 converter detected
[18193.616283] usb 6-1: pl2303 converter now attached to ttyUSB0

The second thing I did was to go under the Radio menu and select “Download from Radio“

then I selected port /dev/ttyUSB0, vendor baofeng and model uv-5r.
I follewed Baofeng UV-5R Instructions:

1. Turn radio off.
2. Connect cable to mic/spkr connector.
3. Make sure connector is firmly connected.
4. Turn radio on (volume may need to be set at 100%).
5. Ensure that the radio is tuned to channel with no activity.
6. Click OK to download image from device

pop up message : cloning ....

Radio did not respond

any suggestion ? ty