[mythtv-users] No Sound with nForce chipset

[David]

Ryan Allen wrote:

>    First off, knoppmyth totally rocks. I wasted a good week trying to
>    get Myth to work on SuSE 9.0, then I switched to this. Thanks for the
>    good work! 
>
>    However, I still have NO sound. I've been searching and have found
>    references on some sticky thread on my problem, but I cannot find it.
>    Here's the lowdown: 
>
>    It's a MSI MEGA 180 box that has the nForce chipset. 
>    Athalon 2500+ (barton) 
>    512 M ram 
>    PVR 350 
>
>    Now, I've got everything working, except sound. There is no sound
>    out from either the SPDIF, the analog out on the sound card nor the
>    PVR.
>
How are you recording? From the builtin tuner/cable (ie *not* from s-video)?
If so then there is no need for a sound card for playback.
The PVR takes the tv signal from the air and picks out the sound and 
video. It then passes this to myth where it's written to a nuv file.
When it's played back myth passes the nuv to the PVR350 and it decodes 
sound and video and send it out of it's cables.

If this results in no sound it's a PVR350 problem - check the 
diagnostics at the PVR wiki (don't know the link
http://www.mythtv.info/moin.cgi/IvTv has links)


You will need the sound sorted to use dvds, mame etc though.

> 
>
>    so looking in /etc/modules.conf it says: 
>
>    alias snd-card-0 snd-intel8x0 
>
>    which is wrong, so naturally I did an "lsmod" and as expected: 
>
>    ---< snip >--- 
>    snd-mixer-oss 11640 0 [snd-pcm-oss] 
>    snd-intel8x0 17636 0 
>    snd-pcm 56000 0 [snd-pcm-oss snd-intel8x0] 
>    snd-timer 14088 0 [snd-pcm] 
>    snd-ac97-codec 32832 0 [snd-intel8x0] 
>    snd-page-alloc 4316 0 [snd-intel8x0 snd-pcm] 
>    snd-mpu401-uart 3168 0 [snd-intel8x0] 
>    snd-rawmidi 13088 0 [snd-mpu401-uart] 
>    snd-seq-device 3824 0 [snd-rawmidi] 
>    snd 27940 0 [snd-pcm-oss snd-mixer-oss snd-intel8x0 snd-pcm
>    snd-timer snd-ac97-codec snd-mpu401-uart snd-rawmidi snd-seq-device] 
>    soundcore 3524 3 [snd] 
>    ---< snip >--- 
>
>    so, I'm thinking I need to compile the nForce linux platform
>    drivers. So, I obtained the latest tar.gz and when I type "Make",
>    the compile fails with the following (parsed for clarity) messages: 
>
>    /usr/include/asm/mpspec.h:6:25: mach_mpspec.h: No such file or
>    directory 
>
>    /usr/include/asm/mpspec.h:8: error: `MAX_MP_BUSSES' undeclared here
>    (not in a function) 
>
>    /usr/include/asm/smp.h:73:26: mach_apicdef.h: No such file or
>    directory 
>
>    In file included from nvhw.c:16: 
>    nvhw.h:29:27: linux/wrapper.h: No such file or directory 
>
>    /usr/include/asm/irq.h:16:25: irq_vectors.h: No such file or
>    directory 
>
>
>    And a few others. My question is, where did I go wrong, and how does
>    one get the nForce audio to work on knoppmyth? 
>
>    Thanks!! 
>
>    -- Ryan
>  
>