Running Multiple X11 Servers Simultaneously I used to run multiple X11 servers on different DISPLAYs with different Window Managers, but now I get a return code of 1 when starting a second X11 server (or startx hangs waiting for the X11 server to start). This apparently started with xorg-server 1.20.8. My previous version was 1.20.6 so I apparently missed a version, where this might have broken.

My OS is 10.15.5 Beta (19F62f) (which may be a problem). 

Has anyone run multiple X11 servers with xorg-server 1.20.8 and Catalina (any version)?

Thanks.
Duplicate /Applications/MacPorts/X11.app to another name, edit the other name's Content/Info.plist, change both “org.macports.X11” to another name.

Not sure changing both is necessary.