[Bug 64256] 5.1 sound on stereo soundcard

[amnesia]

Public bug reported:

Binary package hint: totem

I was trying to play an .avi (x264) with 5.1 audio. Totem is configured to use stereo speakers, which would be right given it's a laptop. However I hear only part of the sound, I guess the front 2 speakers only. I've seen this problem with an oldschool xvid aswell, so I don't think the x264 codec is the problem.
Oh, and mplayer played the same file nicely in stereo, downsampled it perfectly to fit on this card.

Need any other info?

** Affects: totem (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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5.1 sound on stereo soundcard
https://launchpad.net/bugs/64256