[pxc]

It looks like this might be the issue:

https://gitlab.com/qemu-project/qemu/-/issues/334

I wouldn't think that qemu would be associated with a display in the required way here, but maybe being launched by a GUI app that's not a terminal emulator is somehow enough?

Related bug affecting Lima (blocked by this one): https://github.com/lima-vm/lima/issues/2

This is the first I'd heard of 'app nap'. I guess macOS does iOS things and actively freezes apps it thinks are idle.

Maybe it has to do this to get passable battery life during sleep, now that Macs don't actually sleep (S3) anymore?