I'm using PowerDVD 7.3.5711.0 Ultra with 6 channel audio support for blu-ray-playback. With most BD-discs it works without any problems but some (e.g. Terminator Salvation) will only play with 5.1 surround sound if i restart the movie for 3 or 4 times. If i go to settings and change effects to CLMEI-2, all my speakers work, but unfortunately not with real surround effects. If i change back to "no effects" i can only hear left and right front speakers, and only the streams which are belongs to them.

I know this is only a minor problem but it's annoying at all, 'cause i never know if the movie is playing all possible channels or not. I have to start it again and again from the beginning until it works.

Is there a solution for this? As far as i can see it only occurs on BD with DTS-HD or DTS Surround 5.1 sound, not on DD5.1-streams.

I'm using Windows Vista Home Premium 32bit and an onboard RealtekHD ALC889A soundchip with latest drivers. My speakers are attached by standard analog, no spdif or hdmi.

Thanks for any idea.