Well, the workaround is quite simple, just return to the old 331 and
reinstall the nvidia cuda tool kit and everything may be fine again so :

sudo apt-get purge  nvidia-331 nvidia-prime mesa-utils

then

sudo apt-get install  nvidia-331 nvidia-prime mesa-utils

and

sudo apt-get install nvidia-cuda-toolkit

so just after :

 export CUDA_HOME=/usr/local/cuda-5.5

export LD_LIBRARY_PATH=${CUDA_HOME}/lib64

PATH=${CUDA_HOME}/bin:${PATH}

export PATH

Now we must edit the  .bashrc ant put it inside in the end of the
archive, yes you can use gedit or other.

export PATH=/usr/local/cuda-5.5/bin:$PATH *(if you already had installed
the cuda tool kit installed , this will be there but check it is aways a
good choice. =])

Ok Almost there :

close it and on a terminal as root just

source .bashrc

and reboot!

So now your nvidia MAY be working at full trotle again, for blender
users just execute

source .bashrc as root once open blender and exit the terminal after it
and your cuda may be running again =] .

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You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1401355

Title:
  package nvidia-opencl-icd-331-updates (not installed) failed to
  install/upgrade: trying to overwrite '/usr/lib/i386-linux-gnu
  /libnvidia-opencl.so.331.113', which is also in package nvidia-opencl-
  icd-331 331.113-0ubuntu0.0.4

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