Digital output with mono sound
#1
Hello,

I have a problem with digital output on my Gentoo linux with SVN build.

When I play AC3 files through spdif I get sound only on my center speaker. The same files played with mplayer with command `mplayer -ac hwac3,hwdts, -ao alsa:device=front` plays everything right on all 6 speakers.

this is what 'amixer' shows
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined cswitch cswitch-joined
Playback channels: Mono
Capture channels: Mono
Mono: Playback [on] Capture [off]


this is what 'aplay -L' shows
front:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
Front speakers
surround40:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=NVidia,DEV=0
HDA NVidia, ALC883 Digital
IEC958 (S/PDIF) Digital Audio Output
null
Discard all samples (playback) or generate zero samples (capture)


and 'aplay -l'
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC883 Analog [ALC883 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC883 Digital [ALC883 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0


Can anybody help me?
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Digital output with mono sound0