Update later on 12/17/08
Searching this forum finally found the fix:
After getting the system up, to where the mythtv is playing via
digital audio, open the webadmin, go to the media directors page,
and on the media director you are using digital on,
from the drop down box under audio, select stereo not SPDIF
But leave the AC3 box checked.
At the bottom click update, and then do a router reload.
Now my videos and my mythtv play using the digital output.
Developers: there seem to be some issues here -
After I initially loaded LinuxMCE there was no sound from initial wizard.
opening alsamixer turn up IEC958 volume - got sound out of the initial wizard. However no sound for TV or Video. All the other tweaks mentioned in this post were needed to get TV and Video sound working. It would be really nice if it had worked out of the box. If anyone wants any further testing on my part to get any more info needed to get this pinned down and a fix scheduled let me know.
Original posting follows:
__________________________________________________________
Sound problems on DVD playback
Am using SPDIF output for sound - works fine for TV but get motorboating sound for DVD playback.
- I must have something wrong with Xine config? Not sure where that is controlled.
Can anyone suggest what I might try?
Bill
------------------------------------------------------------------------
System:
Installed # LinuxMCE-DVD-i386-rc2.iso
Motherboard Asus M2N-SLI Deluxe Green nVIDIA Socket Am2 ATX
Processor AMD Athlon 64 X2 Dual-Core 6000+ 3.0 GHz
Memory 8096MB Dual Channel 4096MB PC6400 DDR2 800MHz Memory
Video Card - GIGABYTE GV-NX85T256H GeForce 8500GT 256MB 128-bit GDDR2 PCI Express x16
Hard Drive - HITACHI Deskstar 7K1000 HDS721010KLA330 (0A34915) 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s
DVD - SAMSUNG SH203N SATA
HD-5500 Hi Definition Television PCI Card – pchdtv
Audio out - using SPDIF output from mobo to receiver
---------------------------------------------------------------------
Stuff I did to get the sound working for TV:
make sure receiver set to accept optical input
open alsamixer turn up IEC958 volume
MythTV Backend Setup -mythtv-setup.
Set up capture card - pick DVB DTV capture card(v3.x) NOT pcHDTV DTV capture card(w/V4L drivers).
When done see a capture card [DVB:0] listed.
in mythtv frontend
KDE Desktop>Multimedia>Myth Frontend>Utilities Setup>General
enable
AC3 to SPDIF passthru
DTS to SPDIF passthru
added cx88-dvb and cx88-alsa to /etc/modules file
in /usr/share/alsa/cards/NFORCE.conf
changed line 197 from device 2 to device 1
above gets tv working with sound
dvd plays but no sound -- get motorboating noise - same as had for tv before last change to NFORCE.conf
------------------------------------------------
