X suddenly not starting

[matt]

On 02/04/13 08:36, Robert Huff wrote:
> 	I had to re-boot a machine running:
>
> FreeBSD 10.0-CURRENT #0: Sun Dec 30 12:52:09 EST 2012  amd64 
>
> 	this morning, and when it came back up X (invoked via xdm)
> declined to start.  There have been no changes in hardware since the
> last session, and the software (X and apps) are up-to-date as noon
> yesterday. 
> 	Xorg.0.log and xorg.conf are appended in that order.
> 	Any idea what's suddenly broken?
>
> 	Respectfully,
>
>
> 				Robert Huff
>
..snip...
> [ 10831.956] (II) [KMS] Kernel modesetting enabled.
...snip...

Is KMS on in libdrm? It should be off.
We don't have modesetting with radeon.

Matt