[mythtv-users] ION2 HDMI Audio Issue

Nick Rout nick.rout at gmail.com
Fri Sep 24 09:19:19 UTC 2010


On Fri, Sep 24, 2010 at 4:25 PM, Greg Oliver <oliver.greg at gmail.com> wrote:

> On Thu, Sep 23, 2010 at 11:17 PM, jmk <jmk at foofus.net> wrote:
> > Hi,
> >
> > I recently put together an ION2/Atom D525-based machine [1] to replace
> > the frontend portion of my aging backend/frontend combo machine. While
> > long term I will likely use its S/PDIF output, I'd like to send audio
> > through the HDMI connection initially while I work out the kinks in the
> > system. Unfortunately, I'm not quite sure how to do this...
> >
> > Listed below is the output of lspci and aplay [2]. I'm assuming I should
> > see something about nVidia HDMI in the aplay output, but it's not there.
> > FWIW, this is a new stock install of Mythbuntu and everything is up to
> > date. Neither ALSA:default nor ALSA:hdmi produces any sound or useful
> > log data (to me) [4]. Video via HDMI is working just fine and everything
> > is unmuted in alsamixer. Does ALSA 1.0.22 not support ION2+HDMI+Audio
> > yet?
> >
> > Any thoughts on where to start?
> >
> > Thanks!
> > Joe
> >
> >
> > [1] ION2/Atom D525 Jetway mainboard
> >
> http://www.newegg.com/Product/Product.aspx?Item=N82E16813153183&cm_re=d525-_-13-153-183-_-Product
> >
> > [2] lspci/aplay output
> > ----
> >  01:00.1 Audio device: nVidia Corporation High Definition Audio
> > Controller (rev a1)
> >  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> > Stepping- SERR- FastB2B- DisINTx-
> >  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> > <TAbort- <MAbort- >SERR- <PERR- INTx-
> >  Latency: 0, Cache Line Size: 32 bytes
> >  Interrupt: pin A routed to IRQ 16
> >  Region 0: Memory at fe97c000 (32-bit, non-prefetchable) [size=16K]
> >  Capabilities: <access denied>
> >  Kernel driver in use: HDA Intel
> >  Kernel modules: snd-hda-intel
> >
> > 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition
> > Audio Controller (rev 02)
> >  Subsystem: Jetway Information Co., Ltd. Device a625
> >  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> > Stepping- SERR- FastB2B- DisINTx-
> >  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> > <TAbort- <MAbort- >SERR- <PERR- INTx-
> >  Latency: 0, Cache Line Size: 32 bytes
> >  Interrupt: pin A routed to IRQ 16
> >  Region 0: Memory at fcffc000 (64-bit, non-prefetchable) [size=16K]
> >  Capabilities: <access denied>
> >  Kernel driver in use: HDA Intel
> >  Kernel modules: snd-hda-intel
> >
> > $ aplay -l
> > **** List of PLAYBACK Hardware Devices ****
> > card 0: Intel [HDA Intel], device 0: ALC662 rev1 Analog [ALC662 rev1
> > Analog]
> >  Subdevices: 0/1
> >  Subdevice #0: subdevice #0
> > card 0: Intel [HDA Intel], device 1: ALC662 rev1 Digital [ALC662 rev1
> > Digital]
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> >
> > $ aplay -L
> > null
> >    Discard all samples (playback) or generate zero samples (capture)
> > front:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    Front speakers
> > surround40:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    4.0 Surround output to Front and Rear speakers
> > surround41:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    4.1 Surround output to Front, Rear and Subwoofer speakers
> > surround50:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    5.0 Surround output to Front, Center and Rear speakers
> > surround51:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> > surround71:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Analog
> >    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> > iec958:CARD=Intel,DEV=0
> >    HDA Intel, ALC662 rev1 Digital
> >    IEC958 (S/PDIF) Digital Audio Output
>      ^^^^^^
>
> You probably need to unmute that with amixer (amixer set IEC958 100%
> unmute) or through the gui in mythbuntu..  There is a select controls
> tick box under audio properties, select iec958, and it will just start
> working..  No need to restart anything.
>


alsamixer (a console gui) might also do it.
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