No digital out with VIA VT1708b

Bug #298465 reported by Hanno Stock (hefe_bia) on 2008-11-15
This bug affects 4 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Nominated for Gutsy by WeaponX
Nominated for Hardy by WeaponX
Nominated for Intrepid by WeaponX
Nominated for Jaunty by WeaponX

Bug Description

I have an Asus M3N78-VM motherboard with VIA VT1708B onboard sound.

This board has digital sound output via HDMI and a separate optical S/PDIF output jack. However on Intrepid I can only see the analog output device.

Output from aplay -l:
**** Liste von PLAYBACK Geräten ****
Karte 0: NVidia [HDA NVidia], Gerät 0: VT1708B Analog [VT1708B Analog]
  Untergeordnete Geräte: 1/1
  Untergeordnetes Gerät '0: subdevice #0

aplay -L:
    HDA NVidia, VT1708B Analog
    Front speakers
    HDA NVidia, VT1708B Analog
    4.0 Surround output to Front and Rear speakers
    HDA NVidia, VT1708B Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
    HDA NVidia, VT1708B Analog
    5.0 Surround output to Front, Center and Rear speakers
    HDA NVidia, VT1708B Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
    HDA NVidia, VT1708B Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
    HDA NVidia
    HDMI Audio Output
    Discard all samples (playback) or generate zero samples (capture)

hanno@HANNO:~$ aplay -D hdmi:CARD=NVidia,DEV=0 ~/Desktop/SURROUNDTEST_DD_640.wav
aplay: main:583: Fehler beim Öffnen des Audiogerätes: No such file or directory

hanno@HANNO:~$ cat /proc/asound/card0/codec#0 | grep Codec
Codec: VIA VIA VT1708B 8-Ch

hanno@HANNO:~$ cat /proc/asound/card0/codec#0 | grep -C 2 Digital
    formats [0x1]: PCM
  Power: setting=D0, actual=D0
Node 0x12 [Audio Output] wcaps 0x611: Stereo Digital
  Converter: stream=0, channel=0
  Digital category: 0x0
    rates [0x1e0]: 44100 48000 88200 96000
  Connection: 1
Node 0x15 [Audio Input] wcaps 0x100711: Stereo Digital
  Converter: stream=0, channel=0
  SDI-Select: 0
  Digital category: 0x0
    rates [0x1f0]: 32000 44100 48000 88200 96000
  Pin-ctls: 0x20: IN
  Power: setting=D0, actual=D0
Node 0x20 [Pin Complex] wcaps 0x400701: Stereo Digital
  Pincap 0x0810: OUT
  Pin Default 0x985601f0: [Fixed] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Connection: 1
Node 0x21 [Pin Complex] wcaps 0x400601: Stereo Digital
  Pincap 0x0810030: IN OUT EAPD
  EAPD 0x2: EAPD

Javier Jardón (jjardon) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it without more information.

Please include the information requested from the "Reporting Sound Bugs" section of as separate attachments.

Changed in alsa-driver:
assignee: nobody → torkiano
status: New → Incomplete
scoot (niffirg7736) wrote :
Download full text (20.1 KiB)

Asus M2N68-VM, no optical optical HDMI audio either, but just optical would do :)

!!ALSA Information Script v 0.4.52

!!Script ran on: Fri Dec 5 13:40:10 EST 2008

!!Linux Distribution

Ubuntu 8.10 \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 8.10"

!!Kernel Information

Kernel release:
Operating System: GNU/Linux
Architecture: i686
Processor: unknown
SMP Enabled: Yes

!!ALSA Version

Driver version: 1.0.17
Library version:
Utilities version: 1.0.17

!!Loaded ALSA modules


!!Soundcards recognised by ALSA

 0 [NVidia ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xdfff8000 irq 21

!!PCI Soundcards installed in the system

00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)

!!Advanced information - PCI Vendor/Device/Susbsystem ID's

00:07.0 0403: 10de:055c (rev a1)
 Subsystem: 1043:8345

!!Modprobe options (Sound related)

snd-atiixp-modem: index=-2
snd-intel8x0m: index=-2
snd-via82xx-modem: index=-2
snd-usb-audio: index=-2
snd-usb-usx2y: index=-2
snd-usb-caiaq: index=-2
snd-cmipci: mpu_port=0x330 fm_port=0x388
snd-pcsp: index=-2

!!Loaded sound module options

!!Module: snd_hda_intel
bdl_pos_adj : 32,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
enable_msi : 0
index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
position_fix : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
power_save : 0
power_save_controller : Y
probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
single_cmd : N

!!HDA-Intel Codec information

Codec: VIA VIA VT1708B 8-Ch
Address: 0
Vendor Id: 0x1106e721
Subsystem Id: 0x10438345
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x10 [Audio Output] wcaps 0x411: Stereo
  Converter: stream=0, channel=0
    rates [0x5e0]: 44100 48000 88200 96000 192000

scoot (niffirg7736) on 2008-12-07
Changed in linux:
status: Incomplete → New
Javier Jardón (jjardon) wrote :

Thanks for reporting this bug and any supporting documentation. Since this bug has enough information provided for a developer to begin work, I'm going to mark it as confirmed and let them handle it from here. Thanks for taking the time to make Ubuntu better!

Changed in linux:
assignee: torkiano → ubuntu-audio
status: New → Confirmed
Mackenzie Morgan (maco.m) wrote :

Gutsy has no driver for the VT1708B, so its task should probably be rejected.

Benjamin Bender (benben) wrote :

HDMI-Output works on custom-compiled alsa 1.0.18a with aplay -D plug:hdmi test.ac3. But neither on Hardy, Intrepid nor Jaunty Alpha 3 there is light on the optical-out. As far as i can see, there was a BIOS update with broke it. With the original Bios i could select either HDMI or S/PDIF. this switch is gone after an update. And I could imagine that alsa relies on this Information to switch between HDMI and S/PDIF.

Any help to get S/PDIF working would be much appreacheated!

richard (richardjones) wrote :

Just FYI regarding latest ALSA releases:

I manually installed ALSA 1.0.19 over Intrepid last night and see analog (which works) and HDMI (which I cannot confirm) but no S/PDIF device under aplay -l. Since my motherboard (an M2N78-VM, same audio device as OP) was bought yesterday I assume it has the latest BIOS. There is indeed no option in the BIOS to switch between HDMI and S/PDIF, only to turn "AZALEA" (the audio hardware) completely off.

I'll post detailed information tonight when I'm in front of the computer in question.

richard (richardjones) wrote :

The output of for my system with ALSA 1.0.19 is at

Ian (is-olivant) wrote :

I also have the same problem with optical output with ALSA 1.0.19 on Asus M2N68.

richard (richardjones) wrote :
Changed in linux (Ubuntu):
assignee: Ubuntu Audio Team (ubuntu-audio) → nobody

Hanno Stock, thank you for reporting this and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

Changed in linux (Ubuntu):
status: Confirmed → Incomplete
madbiologist (me-again) wrote :

There seems to be a fix for this issue in the 3.13 upstream kernel. commit number c9a6338aecdb92f9d015ecc26d203e54250bebbb - ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices

This fix has also been ccd to the stable kernel series.

Changed in linux (Ubuntu):
importance: Undecided → Low
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