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I'm having trouble getting sound from my spdif optical output, i have the red light comming through the end of the optical cable and my av receiver displays a pcm signal but there is no sound, i think the problem is IEC958 volume level is 0, i can unmute it but can't turn the volume up, i have tried a bunch of different theories but with no luck.
My laptop is a acer aspire 6530
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC888 Analog [ALC888 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC888 Digital [ALC888 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
lspci | grep Audio
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
#
# /etc/modprobe.d/modprobe.conf (for v2.6 kernels)
#
# u1Nb.kZ1c+ntEU3C:82801G (ICH7 Family) High Definition Audio Controller
options snd-hda-intel model=6stack-dig
options snd-card-0 snd_hda_intel
options snd-card-1 snd_hda_intel
lsmod | grep snd
snd_hda_codec_atihdmi 4784 1
snd_hda_codec_realtek 278132 1
snd_seq_dummy 3540 0
snd_hda_intel 31208 3
snd_seq_oss 36224 0
snd_hda_codec 82000 3 snd_hda_codec_atihdmi,snd_hda_codec_realtek,snd_hda_intel
snd_seq_midi_event 8592 1 snd_seq_oss
snd_seq 64640 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 8324 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss 47328 0
snd_mixer_oss 20976 1 snd_pcm_oss
snd_hwdep 9944 1 snd_hda_codec
snd_pcm 90808 4 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer 25344 3 snd_seq,snd_pcm
snd 76712 15 snd_hda_codec_realtek,snd_hda_intel,snd_seq_oss,snd_hda_codec,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_hwdep,snd_pcm,snd_timer
soundcore 8576 1 snd
snd_page_alloc 10784 2 snd_hda_intel,snd_pcm
ls -l /dev/snd
total 0
crw-rw---- 1 root audio 116, 11 2009-07-03 23:43 controlC0
crw-rw---- 1 root audio 116, 14 2009-07-03 23:43 controlC1
crw-rw---- 1 root audio 116, 10 2009-07-03 23:43 hwC0D0
crw-rw---- 1 root audio 116, 9 2009-07-03 23:43 hwC0D1
crw-rw---- 1 root audio 116, 13 2009-07-03 23:43 hwC1D0
crw-rw---- 1 root audio 116, 8 2009-07-03 23:43 pcmC0D0c
crw-rw---- 1 root audio 116, 7 2009-07-04 00:25 pcmC0D0p
crw-rw---- 1 root audio 116, 6 2009-07-03 23:43 pcmC0D1c
crw-rw---- 1 root audio 116, 5 2009-07-03 23:43 pcmC0D1p
crw-rw---- 1 root audio 116, 4 2009-07-03 23:43 pcmC0D2c
crw-rw---- 1 root audio 116, 12 2009-07-03 23:43 pcmC1D3p
crw-rw---- 1 root audio 116, 3 2009-07-03 23:43 seq
crw-rw---- 1 root audio 116, 2 2009-07-03 23:43 timer
any help would be greatly appreciated as this is really confusing me.
Thanks
Last edited by guzz46 (2009-07-06 04:29:46)
Offline
Hi,
I had the same problem with my desktop computer. I have not been able to fix the sound with alsamixer or any other mixer application.
Then, my solution was to edit the file /etc/asound.state in order to swith on the PCM ("value true" instead of "value false"). My asound.state files contains something like :
...
control.29 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Playback Switch'
value true
}
control.30 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Default PCM Playback Switch'
value true
}
...
Then, try to restart alsa.
I hope it'll work.
Good luck!
In a world without fences and walls, who needs Gates and Windows?
Offline
Yes i tried playing around with asound.state with no luck also, both IEC958 playback switch and default pcm playback switch are set to true.
I also tried following the arch alsa wiki where it says
* Edit /etc/asound.state. This file is where alsasound stores your mixer settings.
* Find a line that says: 'IEC958 Playback Switch'. Near it you will find a line saying value:false. Change it to value:true.
* Now find this line: 'IEC958 Playback AC97-SPSA'. Change its value to 0.
* Restart ALSA.
but i don't seem to have a IEC958 Playback AC97-SPSA line.
control.1 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Front Playback Volume'
value.0 31
value.1 31
}
control.2 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Front Playback Switch'
value.0 true
value.1 true
}
control.3 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Surround Playback Volume'
value.0 31
value.1 31
}
control.4 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Surround Playback Switch'
value.0 false
value.1 false
}
control.5 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Center Playback Volume'
value 31
}
control.6 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'LFE Playback Volume'
value 31
}
control.7 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'Center Playback Switch'
value false
}
control.8 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'LFE Playback Switch'
value true
}
control.9 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Side Playback Volume'
value.0 31
value.1 31
}
control.10 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Side Playback Switch'
value.0 true
value.1 true
}
control.11 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Headphone Playback Switch'
value.0 true
value.1 true
}
control.12 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'CD Playback Volume'
value.0 0
value.1 0
}
control.13 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'CD Playback Switch'
value.0 false
value.1 false
}
control.14 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Line Playback Volume'
value.0 0
value.1 0
}
control.15 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Line Playback Switch'
value.0 false
value.1 false
}
control.16 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Mic Playback Volume'
value.0 0
value.1 0
}
control.17 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 3'
comment.dbmin 0
comment.dbmax 3000
iface MIXER
name 'Mic Boost'
value.0 0
value.1 0
}
control.18 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Mic Playback Switch'
value.0 false
value.1 false
}
control.19 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Front Mic Playback Volume'
value.0 0
value.1 0
}
control.20 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 3'
comment.dbmin 0
comment.dbmax 3000
iface MIXER
name 'Front Mic Boost'
value.0 0
value.1 0
}
control.21 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Front Mic Playback Switch'
value.0 true
value.1 true
}
control.22 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 '6ch'
comment.item.1 '8ch'
iface MIXER
name 'Channel Mode'
value '8ch'
}
control.23 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
value.0 true
value.1 true
}
control.24 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
index 1
value.0 true
value.1 true
}
control.25 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -1650
comment.dbmax 3000
iface MIXER
name 'Capture Volume'
value.0 0
value.1 0
}
control.26 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -1650
comment.dbmax 3000
iface MIXER
name 'Capture Volume'
index 1
value.0 0
value.1 0
}
control.27 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 Mic
comment.item.1 'Front Mic'
comment.item.2 Line
comment.item.3 CD
iface MIXER
name 'Input Source'
value Mic
}
control.28 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 Mic
comment.item.1 'Front Mic'
comment.item.2 Line
comment.item.3 CD
iface MIXER
name 'Input Source'
index 1
value Mic
}
control.29 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Con Mask'
value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.30 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Pro Mask'
value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.31 {
comment.access 'read write'
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Default'
value '0082000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.32 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Playback Switch'
value true
}
control.33 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Default PCM Playback Switch'
value true
}
control.34 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Capture Switch'
value true
}
control.35 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Capture Default'
value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.36 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Beep Playback Volume'
value.0 0
value.1 0
}
control.37 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Beep Playback Switch'
value.0 false
value.1 false
}
control.38 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Master Playback Volume'
value 22
}
control.39 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'Master Playback Switch'
value true
}
control.40 {
comment.access 'read write user'
comment.type INTEGER
comment.count 2
comment.range '0 - 255'
comment.tlv '0000000100000008ffffec1400000014'
comment.dbmin -5100
comment.dbmax 0
iface MIXER
name 'PCM Playback Volume'
value.0 255
value.1 255
}
control.41 {
comment.access 'read write user'
comment.type INTEGER
comment.count 2
comment.range '0 - 120'
comment.tlv '0000000100000008fffff44800000032'
comment.dbmin -3000
comment.dbmax 3000
iface MIXER
name 'Digital Capture Volume'
value.0 0
value.1 0
}
state.SB {
control.1 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Front Playback Volume'
value.0 31
value.1 31
}
control.2 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Front Playback Switch'
value.0 true
value.1 true
}
control.3 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Surround Playback Volume'
value.0 31
value.1 31
}
control.4 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Surround Playback Switch'
value.0 true
value.1 true
}
control.5 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Center Playback Volume'
value 31
}
control.6 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'LFE Playback Volume'
value 31
}
control.7 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'Center Playback Switch'
value true
}
control.8 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'LFE Playback Switch'
value true
}
control.9 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Side Playback Volume'
value.0 31
value.1 31
}
control.10 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Side Playback Switch'
value.0 true
value.1 true
}
control.11 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Headphone Playback Switch'
value.0 true
value.1 true
}
control.12 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'CD Playback Volume'
value.0 23
value.1 23
}
control.13 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'CD Playback Switch'
value.0 true
value.1 true
}
control.14 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Line Playback Volume'
value.0 0
value.1 0
}
control.15 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Line Playback Switch'
value.0 false
value.1 false
}
control.16 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Mic Playback Volume'
value.0 0
value.1 0
}
control.17 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 3'
comment.dbmin 0
comment.dbmax 3000
iface MIXER
name 'Mic Boost'
value.0 0
value.1 0
}
control.18 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Mic Playback Switch'
value.0 false
value.1 false
}
control.19 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Front Mic Playback Volume'
value.0 0
value.1 0
}
control.20 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 3'
comment.dbmin 0
comment.dbmax 3000
iface MIXER
name 'Front Mic Boost'
value.0 0
value.1 0
}
control.21 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Front Mic Playback Switch'
value.0 true
value.1 true
}
control.22 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 '6ch'
comment.item.1 '8ch'
iface MIXER
name 'Channel Mode'
value '8ch'
}
control.23 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
value.0 true
value.1 true
}
control.24 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Capture Switch'
index 1
value.0 true
value.1 true
}
control.25 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -1650
comment.dbmax 3000
iface MIXER
name 'Capture Volume'
value.0 19
value.1 19
}
control.26 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -1650
comment.dbmax 3000
iface MIXER
name 'Capture Volume'
index 1
value.0 0
value.1 0
}
control.27 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 Mic
comment.item.1 'Front Mic'
comment.item.2 Line
comment.item.3 CD
iface MIXER
name 'Input Source'
value Mic
}
control.28 {
comment.access 'read write'
comment.type ENUMERATED
comment.count 1
comment.item.0 Mic
comment.item.1 'Front Mic'
comment.item.2 Line
comment.item.3 CD
iface MIXER
name 'Input Source'
index 1
value Mic
}
control.29 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Con Mask'
value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.30 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Pro Mask'
value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.31 {
comment.access 'read write'
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Default'
value '0082000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.32 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Playback Switch'
value true
}
control.33 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Default PCM Playback Switch'
value true
}
control.34 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Capture Switch'
value false
}
control.35 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Capture Default'
value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.36 {
comment.access 'read write'
comment.type INTEGER
comment.count 2
comment.range '0 - 31'
comment.dbmin -3450
comment.dbmax 1200
iface MIXER
name 'Beep Playback Volume'
value.0 0
value.1 0
}
control.37 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 2
iface MIXER
name 'Beep Playback Switch'
value.0 false
value.1 false
}
control.38 {
comment.access 'read write'
comment.type INTEGER
comment.count 1
comment.range '0 - 31'
comment.dbmin -4650
comment.dbmax 0
iface MIXER
name 'Master Playback Volume'
value 25
}
control.39 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'Master Playback Switch'
value true
}
control.40 {
comment.access 'read write user'
comment.type INTEGER
comment.count 2
comment.range '0 - 255'
comment.tlv '0000000100000008ffffec1400000014'
comment.dbmin -5100
comment.dbmax 0
iface MIXER
name 'PCM Playback Volume'
value.0 204
value.1 204
}
control.41 {
comment.access 'read write user'
comment.type INTEGER
comment.count 2
comment.range '0 - 120'
comment.tlv '0000000100000008fffff44800000032'
comment.dbmin -3000
comment.dbmax 3000
iface MIXER
name 'Digital Capture Volume'
value.0 0
value.1 0
}
}
state.HDMI {
control.1 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Con Mask'
value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.2 {
comment.access read
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Pro Mask'
value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.3 {
comment.access 'read write'
comment.type IEC958
comment.count 1
iface MIXER
name 'IEC958 Playback Default'
value '1f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
}
control.4 {
comment.access 'read write'
comment.type BOOLEAN
comment.count 1
iface MIXER
name 'IEC958 Playback Switch'
value true
}
}
Offline
Hi!
Well, after an upgrade of my ArchLinux system with pacman, I tried :
1. stop alsa
2. remove /etc/asound.state
3. restart my computer
4. with alsamixer, unmute "IEC958" and "IEC958 Default PCM"
And it worked. I did not need to play with the file /etc/asound.state. Then, I'm sorry I don't know what is your problem. Does your SPDIF already worked on another Operating System? If not, maybe you can try with a LiveCD?
Anyway, the volume level of the Optical output can't be changed that's why you can see a volume level set to 0. To make the SPDIF work, I just have The Master, the IEC958 and the IEC958 Default PCM unmuted.
Finally, maybe you should take a look at http://alsa.opensrc.org/index.php/DigitalOut.
Let us know if you solve your problem!
In a world without fences and walls, who needs Gates and Windows?
Offline
I finally have it working and it was an easy fix in the end, turns out there was nothing wrong with my sound card setup.
I was testing the output by playing music through exaile and i had no sound but i had sound when playing a DVD with mplayer (only 2 channel though) so i opened up gstreamer properties and changed the device to 'ALC888 DIGITAL' which gave me sound when i clicked the test button but still no sound with exaile or any other music player i tried, so i installed pulseaudio and changed gstreamer properties to use PulseAudio Sound Server and now i have sound with exaile!
I had a quick play with ac3 passthrough but could not get it to work, but thats ok because i watch DVD's on my DVD player anyway, i just wanted to play my music collection stored on my pc via spdif optical out to my receiver which now i can.
Edit: i have now switched to oss4 as alsa was causing too much lag in warzone2100 and i'm very impressed, i can get digital out and the sound quality is a little better (especially through my receiver)
Last edited by guzz46 (2009-08-14 10:26:38)
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