Running the linux version of mathematica (a free trial version of which can be acquired at https://www.wolfram.com/mathematica/trial/) consistently causes a crash in drm. Running intel HD 5500 graphics, and drm-fbsd12.0-kmod-4.16.g20200221.
After finishing with the installer (may need to kill a stalled xdg-related script), run:
env SystemIDList='Linux-x86-64 Linux' PATH=/compat/linux/bin /path/to/mathematica
We will need more specific information about the exact crash message.
Created attachment 218638 [details]
Output following crash
(In reply to Mark Linimon from comment #1)
Apologies - the crash isn't in drm after all; there were just some drm-related log messages cluttering up the screen. The output following the crash is in the attachment (manually transcribed so excuse any typos). There's also a crash dump at https://elronnd.net/vmcore.bz2
(In reply to elronnd from comment #0)
You must add backtrace from kernel with debug symbols
sudo kgdb /usr/lib/debug/boot/kernel/kernel.debug /var/crash/vmcore.last
I've just tried it (just a smoke test with "2+2 <shift+enter"), and it appears to work, at least on 13.0-CURRENT. I wonder... would it be possible for you to test on a newer FreeBSD release, eg 12.2-RC2?