There’s new progress on the Dreamcast emulator for Linux.

I apologise for the lack of updates recently - unfortunately I have not had a  
lot of time to work on lxdream lately due to real life conspiring against me. 
I’ll try to update when I can, but for now there probably won’t be a lot to 
report until at least the end of May.

The good news is that lxdream-render is pretty close to mergeable now (doesn’t 
seem to break much now), and I’ve spent a bit of time trying to track down the 
irritating “geometry” bugs I’ve been seeing (It looks like bad geometry on 
screen, but the same data renders just fine on the DC). The bad news is that 
thus far, I haven’t really gotten anywhere with said bugs.

Source: lxdream.org