Your Xonar D2X uses the alsa snd-virtuoso driver.
http://www.alsa-project.org/main/ind...ix:Vendor-Asus
Oxygen: C-Media CMI8788
http://www.alsa-project.org/main/ind...:Module-oxygen
hda-intel and hifier are probably part of your motherboard sound.
If you are not using the motherboard sound, its a good idea to disable it in the BIOS; or you can blacklist the extra modules in "/etc/modprobe.d". That way autodetection and setup is simpler. INstalling multiple sounds cards is tricky but not too difficult (see H_TeXMeX_H post and alsa web site_.
Use "aplay -L" to see the sound channels available. Then pick one to play back (speaker-test) and test each jack. For example:
Code:
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
front:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
Front speakers
rear:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
Rear speakers
center_lfe:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
Center and Subwoofer speakers
surround40:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
4.0 Surround output to Front and Rear speakers
surround41:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
iec958:CARD=Audigy,DEV=0
SB Audigy 1 [SB0090], ADC Capture/Standard PCM Playback
IEC958 (S/PDIF) Digital Audio Output
then
Code:
$ speaker-test -Dplug:front -c2 -twav
speaker-test 1.0.24.2
Playback device is plug:front
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 16384
Period size range from 16 to 16384
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
0 - Front Left
1 - Front Right
(I only have speakers plugged into the front jacks of my card. "speaker-test -Dplug:surround40 -c4 -twav" gives silence for the rear channels)