[mythtv-users] PVR-150 with no sound?!?

[Michael Tiller]

I decided to do a major overhaul of my Myth system.  I was running FC4 and
MythTV 0.19-fixes but I decided to start over and install Ubuntu Edgy and
Myth TV 0.20 (keeping the database and video files though).

I got most of it done in one night but now I'm spending quite a bit of time
on tracking down frustrating issues.  I've actually been making reasonable
progress but I'm a bit stuck now and looking for any ideas people might
have.

My most recent issue was that I have a bttv card and an ivtv card.
Sometimes the ivtv would be /dev/video0 and other times it would be
/dev/video1.  I added something to /etc/modprobe.d to try and sort that out
and it seems to work.  But now I don't have any audio.  I'm sure the audio
is working because I can hear sounds from the Gnome desktop.  But when I run
'mplayer /dev/video0' or try to watch live TV from Myth, I don't hear
anything.  I have confirmed that the frontend can produce sound by watching
an old recording so it would appear that the issue can be narrowed down to
the output from /dev/video0?!?

Under the Audio settings in the front end, I have:

Output device: /dev/dsp
passthrough device: default
mixer device: /dev/mixer

I assume these are all irrelevant since "mplayer /dev/video0" has no sound
either, correct?

I tried Googling on this, but there were a bunch of sound issues with the
PVR-150 back in IVTV-0.4.0 and I can't find anything relevant because of all
the hits I get related to those issues.

I tried the alsamixer (i.e. I unmuted things and turned stuff up...no
effect).

Here is the output from "ivtvctl --log-status" if that helps (I'm doing NTSC
capture).

ioctl VIDIOC_LOG_STATUS ok
   [17181743.720000] ivtv0: =================  START STATUS CARD #0
=================
   [17181743.756000] tveeprom 0-0050: Hauppauge model 26032, rev C182,
serial# 7935420
   [17181743.756000] tveeprom 0-0050: tuner model is LG TAPC H791F (idx 82,
type 39)
   [17181743.756000] tveeprom 0-0050: TV standards NTSC(M) (eeprom 0x08)
   [17181743.756000] tveeprom 0-0050: audio processor is CX25841 (idx 35)
   [17181743.756000] tveeprom 0-0050: decoder processor is CX25841 (idx 28)
   [17181743.756000] tveeprom 0-0050: has no radio, has IR remote
   [17181743.756000] tuner 0-0061: Tuner mode:      analog TV
   [17181743.756000] tuner 0-0061: Frequency:       67.25 MHz
   [17181743.756000] tuner 0-0061: Standard:        0x0000b000
   [17181743.772000] cx25840 0-0044: Video signal:              present
   [17181743.772000] cx25840 0-0044: Detected format:           NTSC-M
   [17181743.772000] cx25840 0-0044: Detected audio mode:       mono
   [17181743.772000] cx25840 0-0044: Detected audio standard:   no detected
audio standard
   [17181743.772000] cx25840 0-0044: Audio muted:               no
   [17181743.772000] cx25840 0-0044: Audio microcontroller:     stopped
   [17181743.772000] cx25840 0-0044: Configured audio standard: automatic
detection
   [17181743.772000] cx25840 0-0044: Configured audio system:   BTSC
   [17181743.772000] cx25840 0-0044: Specified standard:        NTSC-M
   [17181743.772000] cx25840 0-0044: Specified video input:     S-Video
(Luma In1, Chroma In5)
   [17181743.772000] cx25840 0-0044: Specified audio input:     External
   [17181743.772000] cx25840 0-0044: Specified audioclock freq: 48000 Hz
   [17181743.772000] cx25840 0-0044: Preferred audio mode:      stereo
   [17181743.776000] wm8775 0-001b: Input: 2
   [17181743.776000] ivtv0: ==================  END STATUS CARD #0
==================



Any help would be greatly appreciated.  At this point, I feel like I have
exhausted my diagnostic possibilities.

--
Mike
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