[mythtv-users] alsa problem using DigitalSoundHowTo

Lennart Enström lennart.enstrom at codeca.se
Wed Jan 26 09:10:36 EST 2005


Hi 

My problem started when I did not get any sound from a fresh installed
MythTV on my FC2 system. I then found the
http://www.mythtv.info/moin.cgi/DigitalSoundHowTo but even though I have
the same hardware Asus A7N8X-Deluxe this .asoundrc will not work for me
out of the box. Here is my problem.

When using aplay with mixed-analog "aplay -D mixed-analog
/media/music/slask.wav" or using mplayer "mplayer -ao alsa1x:
mixed-analog /media/music/slask.wav" I do not get any sound. All the
other three devices analog, digital and mixed-digital works though. If I
change the rate in dmix-analog to 44100 it works though (are there any
drawbacks doing this?)

Using mplayer to play a dvd "mplayer dvd://1 -ao alsa1x:mixed-analog"
does - not surprisingly - work but as a surprise the device analog does
not work either. The devices digital and mixed-digital do work.

Here follows some diagnostic output. Is there anything else relevant? Do
alsa write a log file somewhere?

[ozzy:~]$ /sbin/lsmod | grep -i snd
snd_pcm_oss            47865  0
snd_mixer_oss          17217  1 snd_pcm_oss
snd_intel8x0           34829  1
snd_ac97_codec         64529  1 snd_intel8x0
snd_pcm                98761  2 snd_pcm_oss,snd_intel8x0
snd_timer              30021  1 snd_pcm
snd_page_alloc          9801  2 snd_intel8x0,snd_pcm
gameport                5057  1 snd_intel8x0
snd_mpu401_uart         8897  1 snd_intel8x0
snd_rawmidi            26853  1 snd_mpu401_uart
snd_seq_device          8137  1 snd_rawmidi
snd                    54949  11
snd_pcm_oss,snd_mixer_oss,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore              10145  1 snd
[ozzy:~]$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.6 (Sun Aug 15
07:17:53 2004 UTC).
Compiled on Nov 18 2004 for kernel 2.6.9-1.6_FC2.
[ozzy:~]$ cat /proc/asound/cards
0 [nForce2        ]: NFORCE - NVidia nForce2
                     NVidia nForce2 at 0xe6087000, irq 11
[ozzy:~]$ cat /proc/asound/devices
  0: [0- 0]: ctl
 18: [0- 2]: digital audio playback
 25: [0- 1]: digital audio capture
 16: [0- 0]: digital audio playback
 24: [0- 0]: digital audio capture
 33:       : timer
[ozzy:~]$

Maybe this problem should be in the alsa-user mailing list but since I
am trying the above mentioned DigitalSoundHowTo I decided to start out
here.

Any hints???

Lennart



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