My workaround is to use kernel 3.14.1-031401-generic.

Being that I was able to ssh in when the UI froze suggested to me it was a xorg 
related bug connected to the kernel. 
Kernel as old kernels worked (as above)
So Kernel video drivers ?

Assume its an issue with the Intel drivers.

When ssh'ed in I was unable to get the lightdm service to restart.

Using the above kernel my laptop has been up for 13 days when before it would 
usually freeze after waking from suspend or after screen turns off. Odd thing 
was that the keyboard wou;dn't allow switching to a virtual terminal.
Didn't try sysreq keys.

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https://bugs.launchpad.net/bugs/1535714

Title:
  i915 freeze

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