DTS/AC3 SP/DIF Passthrough problem with Matrix 1.0.9

[Pano]

Hi,

I just received my TBS1910 v2.1, and updated it to Matrix 1.0.9.

I have setup XBMC to passthrough SP/DIF optical to my Logitech Z5500 receiver ( DTS/AC3 decoder ).
When i play stereo content like MP3, it is OK. But when i play AC3 or DTS movie, my amplifier tells me i'm receiving stereo content, and i hear garbage in the HP.

My precedent setup was a standard PC with Xbmc Gotham 13.1 with SP/DIF optical passthrough, it worked OK

My setup is a SATA HDD plugged in, and a Motorola usb remote control.

lsusb:
--------------------------------
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 003: ID 0bda:8179 Realtek Semiconductor Corp.
Bus 002 Device 004: ID 22b8:003b Motorola PCS

[vpeter]

I think two conf files from https://gist.github.com/warped-rudi/11141477 are needed in /usr/share/alsa/cards/ folder.