In Opensuse (release, haven't used Tumbleweed) I found it easy to install debuginfo and debugsource packages. In Ubuntu I found it slightly confusing to locate

In Opensuse (release, haven't used Tumbleweed) I found it easy to install debuginfo and debugsource packages. In Ubuntu I found it slightly confusing to locate debug symbol packages. I understood (or misunderstood) that there are 2 options where to find debug symbols and it just depends on the package maintainer how it's done. I did not find how to install debugsource at all. By doing debugsource I mean the source that has all the patches applied exactly as during the build and is in the same path as the symbols suggest.