Problem with STABLE-12 amd 64

[Jonathan Chen]

On Mon, 15 Jul 2019 at 22:28, Filippo Moretti via freebsd-stable
<freebsd-stable at freebsd.org> wrote:
>
>  I did build world but it did not solve the problem

You need to rebuild the port, graphics/drm-kmod, as this port contains
kernel modules. Whenever you upgrade the base system, it is always a
good idea to rebuild/reinstall ports that contain kernel modules, as
they get depend quite critically on being in sync.

Cheers.
-- 
Jonathan Chen <jonc at chen.org.nz>