Public bug reported:

I have ASUS ROG GL552v core i7hq and nvidia geforce 960m. I recently installed 
ubuntu 14.04  and the system worked perfectly except for the resolution and 
some minor issues since the hardwares are quite recent for 14.04. However, I 
could shutdown quite well and there was no unnecessary noise.  I upgraded to 
16.04 only to discover that I could not shutdown the laptop or restart unless I 
manually shutdown with the on/off button. Also, the laptop starts making noise 
which i guess is from the cpu fans immediately after booting up, the noise 
doesn't stop untill I manually shutdown the system. 
I recall that while finalizing the upgrade, the system stuck at the point with 
message 'clearing orphaned inodes'. after several minutes without clearing the 
inodes, it displayed a message 'NMI watchdog: BUG: soft lockup - CPU#5 stuck 
for 23s! [plymouthd:305] '. it kept bringing out this message repeatedly even 
when i left it running for more than an hour until i manually shutdown with the 
button.
I would appreciate any help in resolving this issues.
THanks

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1663580

Title:
  Ubuntu 16.04 upgrade:system unable to shutdown or restart. system
  making lots of noise from cpu fan after boot.  NMI watchdog: BUG: soft
  lockup - CPU#5 stuck for 23s! [plymouthd:305]  error during upgrade,
  unable to clear orphaned inodes.

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