Need help with uploading error

Official Hardware UNO Family UNO R4 Minima
3

Sorry I do not have a R4 but I do use Linux Mint. As I understand it your problem the Linux Protection system is preventing stopping you. For this to work you must be a member of the dialout group. This is what I have found that may help.

Setting Up Arduino IDE on Linux: Tips and Troubleshooting

  1. Check User Groups:

    • Type groups in the terminal to check if dialout is listed.

    • If not, add your user to the necessary groups using the following commands (replace yourUserName with your actual username):

      bash
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sudo usermod -a -G tty yourUserName
sudo usermod -a -G dialout yourUserName

    • Log off and log back in for the changes to take effect. This step is crucial.

  2. Additional Group Configuration (for IDE 2.2 and similar):

    • Run these commands to ensure your user has the required permissions:

      bash
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sudo groupadd plugdev
sudo groupadd dialout
sudo usermod -a -G tty $1
sudo usermod -a -G dialout $1
sudo usermod -a -G uucp $1
sudo usermod -a -G plugdev $1

  3. Troubleshoot Connection with dmesg:

    • Disconnect your Arduino board.

    • Run dmesg -w to start monitoring system messages. The program will not close automatically.

    • Connect the board and observe the output for any changes related to your device.

    • Stop dmesg -w using Ctrl+C.

  4. List Devices:

    • Navigate to the /dev directory and list the devices using:

      bash
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cd /dev
ls -l

    • Check if your device (e.g., /dev/ttyUSB0) appears correctly.

  5. BRLTTY Conflicts:

    • If you see references to BRLTTY in the dmesg output, it can interfere with serial communication. You can uninstall it or create udev rules to disable it:

      bash
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sudo apt-get purge --auto-remove brltty or sudo apt-get remove brltty

    • You may find more guidance on disabling BRLTTY by searching the Arduino forum.

Helpful Links:

These steps and resources should help you troubleshoot and set up your Arduino IDE on Linux effectively. If you encounter further issues, feel free to ask for more assistance!