Comment 10 for bug 1237733

can you try this kernel:

http://people.canonical.com/~ppisati/linux-image-3.11.0-13-generic_3.11.0-13.20~imx6wands_armhf.deb

and the most appropriate of those dtbs:

ubuntu@arm:~$ ll /lib/firmware/3.11.0-13-generic/device-tree/*wandboard*
-rw-r--r-- 1 root root 31367 Oct 16 10:30 /lib/firmware/3.11.0-13-generic/device-tree/imx6dl-wandboard.dtb
-rw-r--r-- 1 root root 33006 Oct 16 10:30 /lib/firmware/3.11.0-13-generic/device-tree/imx6q-wandboard.dtb