The U58 beta Linux native version crashes immediately on older hardware.

Which version of Windows did you try? Was it in a virtual machine or native?

Windows 10 22H2, native

We are having trouble finding hardware to test this issue as your CPU is almost 17 years old. The laptop we have from 2008 (one year older) only has 2 GB of memory and we are unable to install the latest Ubuntu. 

I've sent you a private message with a files to collect some additional information.

Thanks for testing those files I sent you. I was able to reproduce the issue on my old Intel Core 2 Quad Q9300 (2008) with a blank Unity project. We filed a bug with Unity but it may take some time to get a response and it's not clear if/when it will be fixed.

I'm impressed these would-be-museum-pieces are still being used with current OS/games. I fired up my old laptop with a T9300 and didn't get past the installer thumbdrive's boot menu