14.04 - keyboard loosing configuration

[Carlos Alberto Alves]

Hi!
I have a core i5 system on an Asus P68 motherboard with 16Gb RAM, ABNT2 
microsoft keyboard and a 2 Tb HD. It is running ubuntu 14.04 fully updated.
 From time to time it looses keyboard configuraton; going from ABNT2 to 
US international. It needs a reboot to go back to ABNT2 again.
Does anybody know how to solve this problem???
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* Carlos Alberto Alves           *
* Child Neurologist              *
* Systems Analyst                *
* Rio de Janeiro, Brazil         *
* Skype: carlos-aa               *
* mailto:drca.alves at gmail.com    *
* mailto:drcaa at predialnet.com.br *
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