Comment 2 for bug 1047543

which 4.1 surround speaker do you have and how many audio jacks (green/back) ?

cs4630 require firmware to support multi-channels

can you post the verbose pulseaudio log?

since cs46xx use multi plugin to use three stereo device 0,1,3 for surround5.1

  device.string = "surround41:0"
  device.buffering.buffer_size = "163840"
  device.buffering.fragment_size = "5120"
  device.access_mode = "mmap+timer"
  device.profile.name = "analog-surround-41"
  device.profile.description = "Surround analogico 4.1"
  device.description = "Audio interno Surround analogico 4.1"

**** List of PLAYBACK Hardware Devices ****
card 0: CS46xx [Sound Fusion CS46xx], device 0: CS46xx [CS46xx]
  Subdevices: 31/31
card 0: CS46xx [Sound Fusion CS46xx], device 1: CS46xx - Rear [CS46xx - Rear]
  Subdevices: 31/31
card 0: CS46xx [Sound Fusion CS46xx], device 2: CS46xx - IEC958 [CS46xx - IEC958]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: CS46xx [Sound Fusion CS46xx], device 3: CS46xx - Center LFE [CS46xx - Center LFE]
  Subdevices: 31/31