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

Steven Adeff adeffs.mythtv at gmail.com
Sun Nov 14 05:39:41 UTC 2010


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.

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