https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...
The "Cadmium" distro (Debian based) seems to have some support for a "Duet" device, which I assume is the mt8183 based Lenovo Chromebook Duet. They say that the cameras, hw accelerated video decoding, and external video output do not work.
https://github.com/Maccraft123/Cadmium