[mythtv] RE: [mythtv-users] SN41G2 (amd) Shuttle and MythTV

[WeaselGod]

May have to give this a shot.
Eric


Chris Derossi wrote:

>I don't have this MB, so I can't say for sure, but I did a lot of debugging
>with the NVidia-supplied sound driver and got my Asus Nforce MB to work.
>
>The audio driver DOES actually support full duplex, but it incorrectly
>reports that it doesn't. However, another problem prevents it from working,
>but whether it's an audio driver bug or not is harder to say.
>
>In any case, I worked around it by changing one line in
>NuppleVideoRecorder.cpp. Here's the diff:
>
>--- NuppelVideoRecorder.cpp     30 Mar 2003 20:39:04 -0000      1.93
>+++ NuppelVideoRecorder.cpp     2 Apr 2003 07:37:40 -0000
>@@ -1483,7 +1483,7 @@
>     buffer = new unsigned char[audio_buffer_size];
>
>     /* trigger record */
>-    trigger = ~PCM_ENABLE_INPUT;
>+    trigger = 0;
>     ioctl(afd,SNDCTL_DSP_SETTRIGGER,&trigger);
>
>     trigger = PCM_ENABLE_INPUT;
>
>The reason this fails is because the expression ~PCM_ENABLE_INPUT clears the
>input enable bit BUT ALSO sets the output enable bit. This inadvertently
>marks the sound output channel as "in use", so you lose all sound output
>after this. Should the driver ignore the output enable bit on devices opened
>read-only? Probably. Is it illegal to set the output enable bit on devices
>open read-only? Possibly.
>
>_chris
>
>----- Original Message -----
>From: "WeaselGod" <mythtv at firelizards.com>
>To: "Development of mythtv" <mythtv-dev at snowman.net>
>Cc: "Discussion about mythtv" <mythtv-users at snowman.net>
>Sent: Tuesday, April 01, 2003 11:28 PM
>Subject: Re: [mythtv] RE: [mythtv-users] SN41G2 (amd) Shuttle and MythTV
>
>
>  
>
>>I have been trying for several weeks.  So far, I can't get the Myth to
>>work because of the audio.  I think if I had a TV card that could work
>>with BTAudio I would be fine.  However, the 3 cards I have ALL don't
>>have the right chip to do BTAudio.  So, I either have to buy another
>>tuner, or hack the drivers myself.  Since there is only 1 PCI slot I
>>can't replace the audio.  I am running mandrake 9.0.  I have tried the
>>OSS that comes with it mandrake, I have tried the drivers from NVidia's
>>site, and I have compiled and installed the latest ALSA drivers.  They
>>all have issues with FULL DUPLEX.  Unless Nvidia is going to release
>>real drivers or more information about their audio hardware so drivers
>>can be made that are native to it, this is going to be a nightmare.
>>
>>I am going to stick it through, but I am really annoyed I bought this
>>now, I may have to result to just building another windows based PVR
>>which doesn't have NEAR the Myth Functionality but if I can't figure
>>this out in another month, I am just going to give in.
>>
>>Eric
>>
>>
>>
>>Edward Wildgoose wrote:
>>
>>    
>>
>>>Have a search through the archives on this list. A similar question was
>>>      
>>>
>asked very recently.
>  
>
>>>The conclusion was something like:
>>>
>>>a) The shuttle is quite loud (beware).
>>>b) Seems there is some problem getting Nforce2 sound going under linux.
>>>      
>>>
>I'm sure that this will improve though
>  
>
>>>Sorry, I don't have a pointer to the correct spot in the archives right
>>>      
>>>
>now.
>  
>
>>>Ed
>>>
>>>-----Original Message-----
>>>From: Brett Bolen [mailto:brettb at moya.trilug.org]
>>>Sent: 01 April 2003 15:17
>>>To: mythtv-dev at snowman.net; mythtv-users at snowman.net
>>>Subject: [mythtv-users] SN41G2 (amd) Shuttle and MythTV
>>>
>>>
>>>has anybody got this working?
>>>
>>> http://us.shuttle.com/specs2.asp?pro_id=163
>>>
>>>I'm wondering how the Dual VGA and sound is handled ( Nforce2
>>>chipset with MCP-T).
>>>
>>>Any issues?
>>>
>>>Is spdif-out working?
>>>
>>>Thanks.
>>>_______________________________________________
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>>>mythtv-users at snowman.net
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>>>
>>>_______________________________________________
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>>>
>>>
>>>      
>>>
>>_______________________________________________
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>>
>>    
>>
>
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