[mythtv-users] slightly OT: help with HDMI audio, alsa 1.0.23, GT220

[Steven Adeff]

On Sun, Nov 14, 2010 at 12:39 AM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Sun, Nov 14, 2010 at 12:04 AM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
>> On Sat, Nov 13, 2010 at 11:35 PM, Ian Forde <ianforde at gmail.com> wrote:
>>>  Sat, 2010-11-13 at 22:46 -0500, Steven Adeff wrote:
>>>> so I upgraded software on my main frontend today as part of my house
>>>> upgrade to 0.24. This machine has Mythbuntu 10.04 (lucid) and I'm
>>>> using the ricotz ppa to get ALSA 1.0.23 to support the GT220 I have
>>>> installed. There is also a built on 7150 with HDMI output, so I want
>>>> to use card 1 (the GT220) as opposed to card 0.
>>>>
>>>> I had it working until I did the update. Now, I can see the card in
>>>> alsamixer, and if I mute the s/pdif 1 my receiver "loses" the signal
>>>> so I'm figuring this is the device I need to get to play. Neither in
>>>> Myth, or using mplayer (-ao alsa:device=hw=1.x), can I get sound to
>>>> work though.
>>>>
>>>> Anyone have any ideas for me to try? thanks!
>>>
>>> <big snip>
>>>
>>> Went through this last weekend on my MBE.  It's also a FE with a GT220
>>> card and an onboard 7150.  I went through the upgrade to 10.10 a few
>>> weeks back, which comes with ALSA 1.0.23.  I also disabled (via BIOS)
>>> the onboard 7150 over a year ago, so now 'aplay -l' looks like this:
>>>
>>> aplay -l
>>> **** List of PLAYBACK Hardware Devices ****
>>> card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
>>>  Subdevices: 1/1
>>>  Subdevice #0: subdevice #0
>>> card 0: NVidia [HDA NVidia], device 7: NVIDIA HDMI [NVIDIA HDMI]
>>>  Subdevices: 1/1
>>>  Subdevice #0: subdevice #0
>>> card 0: NVidia [HDA NVidia], device 8: NVIDIA HDMI [NVIDIA HDMI]
>>>  Subdevices: 1/1
>>>  Subdevice #0: subdevice #0
>>> card 0: NVidia [HDA NVidia], device 9: NVIDIA HDMI [NVIDIA HDMI]
>>>  Subdevices: 1/1
>>>  Subdevice #0: subdevice #0
>>>
>>> Yep - same as yours except with the onboard completely gone.  In FE
>>> Setup I did a rescan of audio devices and ended up choosing
>>> 'ALSA:plughw:CARD=NVidia,DEV=9' to do HDMI audio to the monitor.
>>>
>>> Of course, it's probably best that you just try the rescan and the
>>> device I listed before going through upgrading... ;)
>>>
>>> Hope that helps...
>>>
>>>        -I
>>
>> hrmm, this bios doesn't give me the option to disable the onboard
>> card. I just tried using the script from
>> http://ubuntuforums.org/showthread.php?t=1046137 to install alsa
>> 1.0.23 from source, and that doesn't seem to be having an affect
>> either, other than slimming down the output shown in aplay,
>>
>
> well, after a reboot, I can get it to work with mplayer, -ao
> alsa:device=plughw=1.7 or 1.9 for both stereo FLAC and for AC3/DTS,
> but no go from within MythTV, so I'm mostly there now.
>


ok, I seem to have gotten it to work after a reboot. the only issue
now is that high definition audio tracks that play fine through
mplayer don't through Myth, all I get is static. I though this was
supposed to work now? I'm playing stereo 96KHz FLAC tracks I purchased
off HDTracks.com

thanks!

-- 
Steve
http://www.mythtv.org/wiki/User:Steveadeff
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