The powerpc port of Ubuntu was dropped during the development of Ubuntu 17.04 and as such it is not available in Ubuntu 18.04 either, however ppc64el is available.
https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes#A32-bit_PowerPC_Support_Dropped
The powerpc port of Ubuntu was dropped during the development of Ubuntu 17.04 and as such it is not available in Ubuntu 18.04 either, however ppc64el is available.
https:/ /wiki.ubuntu. com/BionicBeave r/ReleaseNotes# A32-bit_ PowerPC_ Support_ Dropped