2009-09-21, 09:21
I've had a good read on this subject here and on the and the HTPC section of the 'avforums' but cannot find a solution for my sound problem (or definative response that it not possible).
I have my Zotac ION-ITX-A connected to an Onkyo 605 amp via HDMI.
I have a 16gb USB flash drive with 9.04.1 installed and have updated the nvidia drives with the newer version - restrictedDrivers.NVIDIA.185_18_14.zip - by dropping them onto the USB using a windows pc. They work fine for movie playback with VDPAU enabled.
My problem is with the sound outputted via HDMI. My amp shows this as PCM regardless of the sound stream the movie contains. I have a copy of Wolverine with AAC 5.1 sound. I can confirm this by pressing 'o' during playback. This comes through on the amp display as PCM.
To try and get the HDMI connection to pass DTS/DD(AAC) to my amp i selected the following settings in 'audio hardware' under 'system':
Audio ouptut device: Digital
Dolby Digital (AAC) capable: Yes
DTS capacble: Yes
Audio Output device: hdmi (lowercase)
Passthrough Output device: hdmi (lowercase)
Downmix Multichannel to Stereo: No
I have also tried using a co-ax lead instead of traferring the sound via hdmi. In this case i got Navigation sounds (which HDMI does not provide on my system oddly) but the problem with PCM sound is still the same. With a co-ax lead my settings are:
Audio Output device: iec958 (lowercase)
Passthrough Output device: iec958 (lowercase)
This was just for testing though - i need to use the HDMI lead for my sound if my system is to work correctly. (I feed the HDMI sound from XBMC back up to my tv (for late night viewing when i cant have my speakers on) and this is not possible with a co-ax connection - only HDMI.)
Im not sure what to do now to proceed. I have bought this to replace my xbox 360 which i was using to stream video. It only supported 2 channel stereo in MP4 files so i was having to re-code 5.1 channel audio to 2 channel on my pc first. I wanted to use full surround sound so bought this hardware, but now im stuck with stereo on my new system as well!
Hope someone can help me sort this. Otherwise ive gained some (admittedly very) nice menus and no improved sound support!
I have my Zotac ION-ITX-A connected to an Onkyo 605 amp via HDMI.
I have a 16gb USB flash drive with 9.04.1 installed and have updated the nvidia drives with the newer version - restrictedDrivers.NVIDIA.185_18_14.zip - by dropping them onto the USB using a windows pc. They work fine for movie playback with VDPAU enabled.
My problem is with the sound outputted via HDMI. My amp shows this as PCM regardless of the sound stream the movie contains. I have a copy of Wolverine with AAC 5.1 sound. I can confirm this by pressing 'o' during playback. This comes through on the amp display as PCM.
To try and get the HDMI connection to pass DTS/DD(AAC) to my amp i selected the following settings in 'audio hardware' under 'system':
Audio ouptut device: Digital
Dolby Digital (AAC) capable: Yes
DTS capacble: Yes
Audio Output device: hdmi (lowercase)
Passthrough Output device: hdmi (lowercase)
Downmix Multichannel to Stereo: No
I have also tried using a co-ax lead instead of traferring the sound via hdmi. In this case i got Navigation sounds (which HDMI does not provide on my system oddly) but the problem with PCM sound is still the same. With a co-ax lead my settings are:
Audio Output device: iec958 (lowercase)
Passthrough Output device: iec958 (lowercase)
This was just for testing though - i need to use the HDMI lead for my sound if my system is to work correctly. (I feed the HDMI sound from XBMC back up to my tv (for late night viewing when i cant have my speakers on) and this is not possible with a co-ax connection - only HDMI.)
Im not sure what to do now to proceed. I have bought this to replace my xbox 360 which i was using to stream video. It only supported 2 channel stereo in MP4 files so i was having to re-code 5.1 channel audio to 2 channel on my pc first. I wanted to use full surround sound so bought this hardware, but now im stuck with stereo on my new system as well!
Hope someone can help me sort this. Otherwise ive gained some (admittedly very) nice menus and no improved sound support!