i have installed two Arduino IDE in my Ubuntu one have installed form software application which have problem of accessing to mountable derives of my PC and by this post quid it don't solved:
sudo snap connect arduino:removable-media
so@so-notebook:~$ sudo snap connect arduino:removable-media error: snap "arduino" has no plug named "removable-media"
and another by downloading the application file from Arduino website, which have problem in connecting to usb port like this:
Arduino: 1.8.5 (Linux), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)" Error opening serial port '/dev/ttyACM0'. Try consulting the documentation at http://playground.arduino.cc/Linux/All#Permission
this problem solved by these codes of this instructions:
[sudo usermod -a -G dialout $USER] [sudo chmod a+rw /dev/ttyACM0]
but in this situation one of my Arduino application can connect to hardware by USB port, but can not connect to mountable drives like this:
and another is vis versa. like this:
so how can fix it?