1

i have quectel EC 25 modem in my pc. i am using ubuntu 16.04 OS. while using minicom it showing this minicom: cannot open /dev/ttyUSB3: Device or resource busy error.

srg
  • 73
  • 3
  • 10

1 Answers1

2

You have two options:

  1. Use minicom with sudo.

  2. Add your user to the dialout group by

    sudo usermod -aG dialout $USER

Logout and login. After that you'll be able to reach your modem without sudo.

Pilot6
  • 88,764
  • 91
  • 205
  • 313