loading drm crashes system

[Tijl Coosemans]

On Mon, 25 Jan 2021 22:21:16 -0500 Robert Huff <roberthuff at rcn.com>
wrote:
> Niclas Zeising asks:
> 
> >   Which version of drm-current-kmod?  
> 
> 	5.4.62.g20210118
> 
> >   Can you try to remove it and build it directly from an updated ports 
> >   tree, without using PORTS_MODULES=, and see if that helps?  
> 
> 	It does not.
> 
> >   > 	The GPU is a Radeon HD 3300, and at one point this used to work.  
> >   
> >   When did it stop working?  
> 
> 	September ... I _think_.
> 	After the switch from sc to vt+drm, things worked for a while
> ... then they didn't for several months ... then - September??? - they
> worked for about two weeks ... then they didn't again.

September 10 is when drm-current-kmod was updated from 4.16 to 5.4:
https://svnweb.freebsd.org/ports/head/graphics/drm-current-kmod/Makefile
There haven't been that many updates since then so you could test
ports r548210 with base system from the same date.  If that works try
r548601, r551266 and r554720.