20170211:
AFFECTS: users of x11-server/xorg-server
AUTHOR: rezny@FreeBSD.org
Xorg server has been updated to 1.18.4 and autodetection has changed.
The order in which drivers are now attempted is:
1) vendor/model specific driver according to PCI IDs
2) generic modesetting driver which requires a drm driver with KMS
3) scfb, the generic framebuffer driver
4) vesa (only if arch is x86)
This should minimize the need for xorg.conf files. It is recommended to
load the correct KMS driver (i915kms.ko or radeonkms.ko) via rc.conf,
i.e. kld_list="i915kms.ko", to ensure correct functionality. Although
the vendor drivers may attempt to load the correct drm driver, which
does not always work, the modesetting driver assumes the required KMS
driver is already loaded and will fail if there is none. The modesetting
driver is now recommended as an alternative to the Intel driver; the
performance is comparable and stability is better with modesetting. The
ATI driver continues to offer better performance than modesetting.