Arduino UNO R3 on Raspberry Pi 2 - Error Message

Development Tools IDE 1.x
1

I get the following error message (verbose mode enabled) when I try to download a sketch to an R# from a Raspberry Pi 2.

Anyone with a hint?

avrdude: Version 6.1, compiled on Jul  7 2015 at 10:29:47
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/usr/share/arduino/hardware/tools/avrdude.conf"
         User configuration file is "/home/pi/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/ttyACM1
         Using Programmer              : arduino
         Overriding Baud Rate          : 115200
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
2

You sure it's being assigned ttyACM1?

If you disconnect and reconnect the Arduino, and then run "dmesg" right away, you'll see what it is enumerated as.

3

It's the same message I get in Ubuntu if I try to write to a port with nothing connected to it or the device powered off.