Assuming you are running 13.0 Current, and already put the entry in
/etc/rc.conf:
kld_list="amdgpu"   #Yes, no path needed, just "amdgpu"

Having done that, try this in /boot/loader.conf

hw.syscons.disable=1  # then reboot

I'm not the expert here, but the cause is what I might call a "framebuffer
problem" with AMD graphics and drm-kmod. There were changes in August to
drm-current-kmod that  took me a while to overcome myself, but thanks to
the folks on this list, I'm back online with 13.0 Current.

Good luck,
Clay

On Thu, Sep 19, 2019 at 6:00 AM <mms.vanbreukelin...@gmail.com> wrote:

> Having a Raden 240 (sometimes 250) and an older AMDGPU. The older card is
> deactivated in BIOS but it is been found by the X -configure problem. X
> server
> did start one time with -config /root/xorg.conf.new, copied to /etc/X11/
> xorg.conf, never got back any "blank black grafic" screen. Rebuilt new
> world
> and the kern with WITNESS option on and option LOCK_PROFILING. Using llvm-
> devel is useless in that case, if it doesn't with the 8.0.X.
>
> Can't enter framebuffer mode, tells /var/log/x11_*.log,  no VESA, no xfcb.
> sddm tells: xauth: bad add command line, bad delete command line, bad add
> commandline. It used to work with even X -configure fatal error and sddm,
> so
> what to xrite in xauth; normally sddm autoconfigs.
>
> I guess it's the recognization from both cards, what is the option to
> really
> and finally deactivate this on-board card on an ASUS PRIME 350 board (I
> just
> mean NOT to cut the part of the board where grafics situatiated with a
> laser-
> cutter :-) )? This one has never been used as it been too old for good 3D-
> Gaming what has been a topic a year ago - not for me, but for a user.
>
> What's the state of art for 3D-virutal-glasses and gloves? I guess the
> same as
> with the AI! I guess freeBSD has other functions to do than beeing a
> desktop
> OS!
>
> Thx for help in advance,
> Yours, Miranda
>
>
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