Comment 7 for bug 1898152

Having not had any success with removing gnuradio, I tried removing other things, including the PPAs I had removed before (I was aiming to make one change at a tie to pin down the issue). It turns out that I had a non-Ubunutu standard versions of sane and some associated libraries. When I forced the version to be the one in bionic-update I was able to update successfully.

Thanks for the assistance. As always when one find the solution one wonders why one did not do that first :-(