Comment 5 for bug 1878045

Thanks, this eliminated the problem.
The only unexplained thing is what was the urge to break the "old" package which perfectly worked before. If Ubuntu planned to reorder/restructure package names, the reasonable way would be to turn 'bcmwl-kernel-source' into a dummy/transitional package which would pull new broadcom-sta-* packages as its dependencies. But probably Ubuntu plans were more mysterial than that.