PaulStoffregen
Well-known member
Looks like the "port busy" on Windows & MacOS we often hear reports, and maybe also strange serial monitor issues on Linux might be related to having 2 Arduino IDE instances open.
With Arduino IDE 1.8.19, there may be some ways the IDE is still running in the background (including a serial monitor), even though all windows appear to be gone. Spent a several hours investigating today, then accidentally crashed my machine while forcibly killing the lingering processes.
Mainly leaving this here as a note to future me... cause I'm exhausted on this issue right now. Was hoping to finally address this in 1.59, but might have to wait.
With Arduino IDE 1.8.19, there may be some ways the IDE is still running in the background (including a serial monitor), even though all windows appear to be gone. Spent a several hours investigating today, then accidentally crashed my machine while forcibly killing the lingering processes.
Mainly leaving this here as a note to future me... cause I'm exhausted on this issue right now. Was hoping to finally address this in 1.59, but might have to wait.