No display with Ubuntu on BBB with 4DCAPE-70T

I booted the prebuilt 14.04 image from a uSD card, but get no output on my 4D Systems 7" cape. The dmesg output is:

http://paste.ubuntu.com/10412184/

Everything works fine under Debian. Any help appreciated.

Jerry

http://elinux.org/Beagleboard:Capes_3.8_to_3.14#4dcape-70t

Open: /boot/uEnv.txt

dtb=am335x-boneblack-4dcape-70t.dtb

reboot..

Regards,