[mythtv-users] ION2 HDMI Audio Issue

Greg Oliver oliver.greg at gmail.com
Fri Sep 24 04:25:31 UTC 2010


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.

-Greg


> [3] MythTV ALSA:default and ALSA:hdmi output
> ---
> 2010-09-23 22:55:04.070 Opening audio device 'default'. ch 2(2) sr 48000
> (reenc 0)
> 2010-09-23 22:55:04.070 Opening ALSA audio device 'default'.
> ALSA lib control.c:902:(snd_ctl_open_noupdate) Invalid CTL /dev/mixer
> 2010-09-23 22:55:04.132 AudioOutput Warning: Mixer attach error -2: No
> such file or directory
>      Check Mixer Name in Setup: '/dev/mixer'
>
>
> 2010-09-23 22:50:43.843 Opening ALSA audio device 'hdmi'.
> 2010-09-23 22:50:43.844 AudioOutput Error: snd_pcm_open(hdmi): No such
> file or directory
> 2010-09-23 22:50:43.844 NVP(0): Disabling Audio, reason is:
> snd_pcm_open(hdmi): No such file or directory
> ---
>
>
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>


More information about the mythtv-users mailing list