Hi,

I have a Pinnacle Dazzle DVC 90. I use Ubuntu version 2.6.15-28-386, which
has em2880 support built in. I can play video perfectly, but I cannot get
usb audio. The snd_usb_audio module loads automatically with em28xx, and
creates an audio device. With alsamixer, I enabled pcm capture on the usb
audio device. I know sound works on this computer, since mplayer can play
regular media files.

I have tried many things to get sound, but always failed:
  arecord -Dhw:1,0 --format=S16_LE --rate=48000 -c 2
  usbaudio_setup.sh (usb audio => intel audio card)
  mplayer tv:// -tv
driver=v4l2:normid=1:audiorate=48000:immediatemode=0:alsa:forceaudio:amode=0:adevice=
hw.1,0
  cat /dev/dsp1 > /dev/dsp

arecord neither outputs data, nor plays when piped to aplay.

usbaudio_setup.sh doesn't play any sound but looks right:

  Using command: sox -r 48000 -w -c 2 -t ossdsp /dev/dsp1 -t ossdsp
/dev/dsp

  Input Filename : /dev/dsp1
  Sample Size    : 16-bits
  Sample Encoding: signed (2's complement)
  Channels       : 2
  Sample Rate    : 48000

  Time: 01:19.87 [00:00.00] of 00:00.00 (  0.0%) Output Buffer:   3.83M

With MPlayer, video plays perfectly and the alsa system engages and
supposedly starts playing, but there is no sound. I am in Canada where the
TV standard is NTSC-M, hence I use normid=1 to get correct video.

cat /dev/dsp1 > /dev/dsp does nothing, even in combination with MPlayer.

I upgraded another machine to the latest version of em2880 according to the
the official installation instructions on mcentral.de. The machine became
unable to capture anything but uniformly green video (with MPlayer). My
problem is similar to the DVC90 audio problems described in FAQ11, although
that entry seems to be unresolved and hasn't been updated in a month. (link:
http://mcentral.de/wiki/index.php/Em2880_FAQ11#DVC90_Audio_Problems)

For the Ubuntu computer, I've posted the relevant portions of /proc/version,
lsusb, lsmod, and dmesg on
http://www.citi-tune.com/wiki/index.php/Debug_Info

Any help would be greatly appreciated.

Thanks,

Derek Felson
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