So I have now tested installing upstream kernel (4.18-rc6), which worked and made the procedure successful on 16.04. The system however became quite unstable as a whole and so I upgraded the system to 18.04 with it´s stock kernel 4.15-something, which also works. That means it´s definitely something wrong with 16.04 kernel and not something local to the system.
So I have now tested installing upstream kernel (4.18-rc6), which worked and made the procedure successful on 16.04. The system however became quite unstable as a whole and so I upgraded the system to 18.04 with it´s stock kernel 4.15-something, which also works. That means it´s definitely something wrong with 16.04 kernel and not something local to the system.
/K