[mythtv-users] WinTV PVR 250 Audio

David A. Mason damason at redshift.com
Mon Jul 7 02:42:51 EDT 2003


I've been wrestling with this one for hours:

After fiddling and fiddling and fiddling, trying to get around the fact
that I can't get an image if mythbackend starts before the X session, I
realized that I suddenly no longer had any audio.

Of course, I did double-check, and previous recordings do play both
video and audio, but new ones do not.

Nor does mplayer /dev/video0 play audio, either, and manual recordings
with the perl script provided with ivtv also have no sound.

I've set the debugging to 2 on the msp34xx, and I find these messages:
msp34xx: switching to TV mode
msp34xx: MSP_SET_MATRIX
msp34xx: scart switch: mute => 1
msp34xx: MSP_SET_MATRIX
msp34xx: scart switch: mono => 1

I've experimented with lowering and raising the bitrate using
test_ioctl, but to no avail.

I am most definitely using the ivtv-specific version of the msp3400
module, with MythTV .10 on a Mandrake kernel 2.4.21-0.18mm.

This is particularly frustrating, as I seemed to have it all set until a
few hours ago.

I believe I've got Alsa configured correctly, with Line-in muted and set
as a recording source, too.

Has anyone else encountered and defeated this situation?

DAM
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Simple mixer control 'Master',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 31 [100%] [on]
  Front Right: Playback 31 [100%] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Front Left: Playback 63 [100%] [on] Capture [off]
  Front Right: Playback 63 [100%] [on] Capture [off]
Simple mixer control 'Synth',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 31 [100%] [on]
  Front Right: Playback 31 [100%] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 0 [0%] [off] Capture [on]
  Front Right: Playback 0 [0%] [off] Capture [on]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 31 [100%] [on] Capture [off]
  Front Right: Playback 31 [100%] [on] Capture [off]
Simple mixer control 'Mic',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-jo
ined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Mono
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 15
  Mono: Playback 15 [100%] [on]
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Mic Boost',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Aux',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 31 [100%] [on]
  Front Right: Playback 31 [100%] [on]
Simple mixer control 'Aux0',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Front Left - Front Right
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Aux1',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Front Left - Front Right
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Aux',1
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Front Left: Playback 31 [100%] [on]
  Front Right: Playback 31 [100%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 15
  Front Left: Capture 15 [100%]
  Front Right: Capture 15 [100%]
Simple mixer control 'Mix',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Front Left - Front Right
  Front Left: Capture [off]
  Front Right: Capture [off]
Simple mixer control 'Joystick Speed',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Limits: 0 - 15
  Mono: 8 [53%]
Simple mixer control 'Loopback',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Mono
  Limits: Capture 0 - 63
  Mono: Capture 0 [0%] [on]
Simple mixer control 'SonicVibes External Rx to Synth',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'SonicVibes External Tx',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'SonicVibes Onboard Synth',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'SonicVibes Wave Source RAM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'SonicVibes Wave Source RAM+ROM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]


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