The X11 with amdgpu fault

[Jan Beich]

"mms.vanbreukelingen at gmail.com" <mms.vanbreukelingen at gmail.com> writes:

> The output of the /var/Xorg.....log is:
>
> xf86EnableIO: failed to open /dev/io for Extended I/O

Did you build x11-servers/xorg-server with SUID option enabled?
For one, /dev/io cannot be opened by anyone but root even after
adjusting file permissions.
https://github.com/freebsd/freebsd/blob/releng/12.0/sys/dev/io/iodev.c#L73