Same black screen issue with a 2008 13" Aluminum MacBook with Nvidia chipset/iGPU (GeForce 9400m)
Gets the batocera.linux loader, shows the splash screen, then it hard locks. This didn't occur on 5.18 or earlier builds.
Edit: Apparently, the box hasn't hard locked, but is just not starting X. I was able to SSH in and manually start it. There are some funny things happening though, like accessing the Information menu causes ES to freeze.