See some of the other posts here for intermittent fixes. My main issue on Arch was getting udev permissions right which is described in this post.
I’ve also had trouble with the Studio not debugging/running things right which it seems some other people fixed, but I never confirmed (didn’t wanna use the studio anyhow).
The SDK worked ok for me but I found their organization confusing and metal seems overkill to follow. I wanted to learn using Rust.
I’m planning on writing a short blog about how to get the rev B working with Rust and minimal toolchain setup soon.