F12, CTRL F12 enz. stopd working

Development Tools IDE 2.x
13

I'm going to ask you to provide the debug logs that are produced by the "Arduino Language Server" tool used by Arduino IDE for these "context-aware" features.

:red_exclamation_mark: NOTE: These instructions will not solve the problem. They are only intended to gather more information which might provide a clue that eventually leads to a solution.

A. Enable Language Server Logging

  1. Use the Ctrl/⌘+Shift+P keyboard shortcut to open the "Command Palette" in Arduino IDE.
  2. Select the "Preferences: Open Settings (UI)" command from the "Command Palette".
    The "Preferences" tab will now open in the editor panel.
  3. In the "Search Settings" field, type arduino.language.log
  4. Under the "Arduino > Language: Log", section, check the box next to "☐ True if the Arduino Language Server should generate log files into the sketch folder. Otherwise, false. It's false by default."
  5. Close the Preferences tab by clicking its X icon.

B. Gather Logs

  1. Use Arduino IDE until it gets into that state where the "Error communicating with the language server" notification is shown.
  2. Select Sketch > Show Sketch Folder from the Arduino IDE menus.
    The folder containing the sketch will open in your file browser.
  3. Right click the sketch folder.
  4. From the context menu that opens, select "Send to".
  5. Select "Compressed (zipped) folder" from the "Send to" menu.
  6. Attach the "ZIP" file that was created to a reply here on this forum thread.
    You can do this by drag and dropping the file onto a reply, copy/pasting the file, or by clicking the upward pointing arrow icon ("Upload") on the post composer toolbar.
  7. Close the Preferences tab by clicking its X icon.

C. Disable Language Server Logging

When language server logging is enabled, log files are saved to every sketch you open in Arduino IDE and they steadily grow in size whenever you are editing the sketch. So the logging is something you would usually want to disable whenever generation of logs is not needed.

  1. Use the Ctrl/⌘+Shift+P keyboard shortcut to open the "Command Palette" in Arduino IDE.
  2. Select the "Preferences: Open Settings (UI)" command from the "Command Palette".
    The "Preferences" tab will now open in the editor panel.
  3. In the "Search Settings" field, type arduino.language.log
  4. Under the "Arduino > Language: Log", section, uncheck the box next to "☑ True if the Arduino Language Server should generate log files into the sketch folder. Otherwise, false. It's false by default."
  5. Close the Preferences tab by clicking its X icon.

You are now welcome to delete the .log files that were added to the sketch folder.