My OS is Ubuntu 18.04 and arduino was working until now.

Although there are a few solutions, none of them seems to work for me.

I followed these instructions on the arduino website.

Then I tried this on arduino Stack Exchange, which should work in cases where the first solution didn't. The answer says we should create a few rules on /etc/udev/ruled.d/ path.

But none of them worked for me.

I also tested arduino in Windows 10 to see if it was a hardware problem, but it worked fine.

Does anyone have any other ideas on how to solve this issue?

UPDATE:

• My username, sergio, is part of both groups (tty and dialout);


• I logged out and back in as arduino official tutorial explains;


• In Arduino IDE, the configurations are correct: Arduino UNO and ttyACM0



• This is the output of ll /dev/ttyACM0 after running the tutorial commands:

  
  
  

  crw-rw-rw- 1 root dialout 166, 0 Jul 15 05:41 /dev/ttyACM0
  
  

UPDATE 2:

I've created a script to solve this:
https://github.com/sergiomafra/iniarduino