Did this issue start happening after an update/upgrade? - YES
Was there a prior kernel version where you were not having this particular problem? - YES, 4.4 in Ubuntu 16 stable.
Would it be possible for you to test the latest upstream kernel? - Maybe next week only :(
Problem is with NVIDIA drivers - I purged them out now and NB temperature is normal now, but bad graphics :(
Did this issue start happening after an update/upgrade? - YES
Was there a prior kernel version where you were not having this particular problem? - YES, 4.4 in Ubuntu 16 stable.
Would it be possible for you to test the latest upstream kernel? - Maybe next week only :(
Problem is with NVIDIA drivers - I purged them out now and NB temperature is normal now, but bad graphics :(