Arduino Due 1.6.6 on Arm64 Ubuntu 20.04

[rkodama]

Sorry there have been a couple of similar topics over the years, most recently:

Arduino Due on Ubuntu 20.04

Welcome to the forum. That is something from 2018. It is no surprise that something from 2018 will break the build process. Which computer do you use ? Can you install the newest Ubuntu ? Try to remove everything of Arduino from your computer, but not your projects of course. Try the Arduino IDE 1.8.15 first. The new Arduino IDE 2.0 Beta does not come in a ARM version yet, but there is a hourly build for the ARM64.

I also used the method from the 2018 post, and I was able to compile sketches to my Due (from Ubuntu 20.04 on an Odroid C2), however I'm seeing odd behavior like hangs that I'm not used to seeing. I've done lots of development for the Due but pretty much exclusively using the 1.6.6 core (mostly on Windows, although I built an old Arm 32-bit Ubuntu setup that worked pretty well, since at the time the IDE was not available for Arm64). Anyway, I was hoping that someone could help me figure out how to install the 1.6.6 version on Arm64, in hopes that it will work better.

Thanks!
Richard