I am having problems after installing ubuntu touch on my Nexus 7 3G

I tried using the command to install ubuntu touch

sudo pablet-flash cdimage-touch -d grouper -b

But after installing, it doesn’t boot. It's stuck at the Google splash screen. .
I can go to the recovery menu. I tried to flash packages manually with no joy.

I can login to ubuntu via terminal connected using the usb cable

$ adb shell





BusyBox v1.20.2 (Ubuntu 1:1.20.0-8.1ubuntu1) built-in shell (ash)

Enter 'help' for a list of built-in commands.

but it doesn’t show anything on the screen

In the recovery mode, I can connect via shell commands again but commands are very limited

~ # pwd

/

~ # uname -a

Linux localhost 3.1.10-6-grouper #23-Ubuntu SMP PREEMPT Fri Aug 16 18:58:39 UTC 2013 armv7l GNU/Linux

Any help would be greatly appreciated.