Unable to reproduce this. The output of `jupyter kernelspec list` provided shows that there is a custom install of ipykernel (python2) in /usr/local/share/jupyter/kernels/python2 shadowing python-ipykernel - maybe installed with `sudo pip install`?
Try removing that version and see if the packaged kernel (/usr/share/jupyter/kernels/python2/kernel.json) works as expected.
