[mythtv-users] Soundblaster live and AC3 for MythDVD help

[Gregg Farhat]

I removed the suggested items and applied the .asoundrc. It still has
the same results.  I did discover if I add -ac hwac3, -ao alsa9 I get
no sound on dvd, but if I remove it I get static.  Any other
suggestions besides a hammer :) .  Thanks again for your help.


On Tue, 04 Jan 2005 20:04:45 -0500, Kyle Rose <krose+mythtv at krose.org> wrote:
> Gregg Farhat <3gemail at gmail.com> writes:
> 
> > Okay.  I have an onboard sound card which is disabled, and the sblive.
> >  The sound currently works through the SPDIF for mythtv and mythvideo,
> > but when I play a DVD I get static. I don't intend to sound dumb, but
> > I did not know how to handle the entrys with multiples. Here is what I
> > get from  lsmod | egrep snd
> >
> > snd_emu10k1            88521  1
> > snd_rawmidi              21733  1 snd_emu10k1
> > snd_pcm                   83529  1 snd_emu10k1
> > snd_timer                  25413  1 snd_pcm
> > snd_seq_device         6473  2 snd_emu10k1,snd_rawmidi
> > snd_ac97_codec        58821  1 snd_emu10k1
> > snd_page_alloc          8393  2 snd_emu10k1,snd_pcm
> > snd_util_mem            3521  1 snd_emu10k1
> > snd_hwdep                6597  1 snd_emu10k1
> > snd                           45477  10
> > snd_emu10k1,snd_rawmidi,snd_pcm,snd_timer,snd_s
> > eq_device,snd_ac97_codec,snd_util_mem,snd_hwdep
> > soundcore                 7713  1 snd
> 
> So, for now I'd blacklist snd_seq_device, snd_rawmidi, and snd_hwdep.
> Here's what I have:
> 
> snd_intel8x0
> snd_ac97_codec
> snd_pcm_oss
> snd_mixer_oss
> snd_pcm
> snd_timer
> snd
> snd_page_alloc
> 
> Okay, so once you do this, here's my /etc/asound.conf (or .asoundrc):
> 
> pcm.krose-dmix {
>   type dmix
>   ipc_key 3516
>   ipc_key_add_uid yes
>   slave {
>         pcm "hw:0,0"
>         period_time 0
>         period_size 1024
>         buffer_size 4096
>         rate 48000
>   }
> }
> 
> pcm.dsp0 {
>   type plug
>   slave.pcm "krose-dmix"
> }
> 
> ctl.mixer0 {
>   type hw
>   card 0
> }
> 
> pcm.!default {
>   type plug
>   slave.pcm "krose-dmix"
> }
> 
> I actually *only* have problems with AC3 output with mythtv, and only
> on the first attempt: all subsequent attempts succeed.  I have no
> problems with xine.  I'd just make sure you have the following lines
> in your .xine/config:
> 
> audio.a52_pass_through:1
> audio.alsa_a52_device:iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2
> audio.alsa_mmap_enable:0
> audio.alsa_default_device:default
> audio.driver:alsa
> 
> The alsa_a52_device line may be commented out; if so, you should be
> able to leave it as-is.
> 
> Lemme know how this works.
> 
> Cheers,
> Kyle
>