Upstream PA is not happy merging a suboptimal workaround (and he's
right -- it's a bug in alsa-lib that should be fixed properly, but it
needs some thinking), and until it's actually resolved in the
appropriate source packages (namely, alsa-lib), this will continue to
be the case by default.
Fortunately, there's at least one other bug open in LP regarding how
to configure default.pa to use a different channel map.
Upstream PA is not happy merging a suboptimal workaround (and he's
right -- it's a bug in alsa-lib that should be fixed properly, but it
needs some thinking), and until it's actually resolved in the
appropriate source packages (namely, alsa-lib), this will continue to
be the case by default.
Fortunately, there's at least one other bug open in LP regarding how
to configure default.pa to use a different channel map.