https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231884

[J. Altman]

On Sun, Oct 07, 2018 at 02:37:16PM +0200, Niclas Zeising wrote:
> 
> Hi!
<snip>
> In the meantime, if you have any of the drm-next or drm-stable ports 
> installed, can you check that they have actually loaded?
> You need to add kld_list="/boot/modules/radeonkms.ko" to rc.conf to have 
<snip>
> Niclas Zeising

Thank you, Niclas...that helped, and I am now able to use X.

Best regards,

Joe