Comment 17 for bug 1286021

>However, this will just add Surround 2.1 support for stuff that already is 2.1 in source material (well, 5.1 will be downmixed to 2.1, but normal stereo will not be upmixed, so no sound will be heard on the subwoofer).

Does it mean that test with 5.1 downmix to surround21 ?

speaker-test -c6 -t wav -d -D pulse