Please test the kernel at the link below and see if it fixes your issue.
http://people.canonical.com/~sforshee/lp1183856/linux-3.8.0-25-generic_3.8.0-25.37~lp1183856v201306170745/
Please test the kernel at the link below and see if it fixes your issue.
http:// people. canonical. com/~sforshee/ lp1183856/ linux-3. 8.0-25- generic_ 3.8.0-25. 37~lp1183856v20 1306170745/