I succesfully installed Qubes 3.1RC2 on a Mintbox2 (kindof IntensePC from Compulab -> mintbox 2 specs)
i have 2 ethernet adapters and one wireless. The 3 were attached to sys-net causing problems with dma memory allocation. There are 2 solutions, either set swiotlb to 16383 or dettach one adapter.
Since i m not using wireless, i dettached the wireless adapter.
I ve attached detailled HCL report to this post.(vt-x and vt-d enabled)
Following my previous thread, i m using debian templates in all the vms (including sys-net and sys-firewall) and everything s working great.