I have an ASUS M4A78T-E mobo running Kubuntu Jaunty 9.04 with a
custom 2.6.28.9 kernel. I am getting sound out the Line Out/Speaker
Out jacks, but no sound through the Toslink S/PDIF Out jack.
This mobo has integrated 7.1 channel HD Audio using Via VT1708S
chip, plus HDMI out. I think S/PDIF out is by the VT1708S and HDMI is by
the integrated Radeon HD3300 GPU ????.
I do not see S/PDIF out in the aplay -L ouput below, and no S/PDIF
(iec958) slider appears in the alsamixer panel. I have the impression
I have to do something to enable iec958, but I don't know what that is.
In any case, my question is what do I have to do to enable S/PDIF Out?
Some (I hope) relevant command outputs below ...
Thanks!
$ aplay -L
default:CARD=SB
HDA ATI SB, VT1708S Analog
Default Audio Device
front:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
Front speakers
surround40:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
HDA ATI SB, VT1708S Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
Discard all samples (playback) or generate zero samples (capture)
hdmi:CARD=HDMI
HDA ATI HDMI, ATI HDMI
HDMI Audio Output
$ lspci -v
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
Subsystem: Device 8357:1043
Flags: bus master, slow devsel, latency 64, IRQ 16
Memory at fbbf4000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
Subsystem: ATI Technologies Inc RS780 Azalia controller
Flags: bus master, fast devsel, latency 0, IRQ 19
Memory at fbdfc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
$ lsmod | grep snd
snd_seq_dummy 11012 0
snd_seq_oss 38016 0
snd_hda_intel 433332 4
snd_seq_midi 14464 0
snd_rawmidi 29568 1 snd_seq_midi
snd_seq_midi_event 15360 2 snd_seq_oss,snd_seq_midi
snd_pcm_oss 46080 0
snd_mixer_oss 22656 1 snd_pcm_oss
snd_seq 57136 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_pcm 83076 2 snd_hda_intel,snd_pcm_oss
snd_seq_device 15244 5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
snd_timer 29320 2 snd_seq,snd_pcm
snd 62500 17 snd_seq_oss,snd_hda_intel,snd_rawmidi,snd_pcm_oss,
snd_mixer_oss,snd_seq,snd_pcm,snd_seq_device,snd_t imer
soundcore 15456 1 snd
snd_page_alloc 17160 2 snd_hda_intel,snd_pcm
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