[mythtvnz] PVR-150 - missing audio 1 time in 10?

[Nick Rout]

On Sun, 16 Jul 2006 18:38:29 -0700 (PDT)
paul arthur <paul_arthur@yahoo.com> wrote:

> Steve - spot on - you've covered some ground !
> 
> 
> root@moonmyth:~# ivtvctl --log-status
> ioctl VIDIOC_LOG_STATUS ok
>    ivtv0: =================  START STATUS CARD #0  =================
>    cx25840 2-0044: Video signal:              present
>    cx25840 2-0044: Detected format:           PAL-BDGHI
>    cx25840 2-0044: Detected audio mode:       mono   <<<<<< THIS IS THE PROBLEM !!
>    cx25840 2-0044: Detected audio standard:   NICAM-BG
>    cx25840 2-0044: Audio muted:               no
>    cx25840 2-0044: Audio microcontroller:     running
>    cx25840 2-0044: Configured audio standard: automatic detection
>    cx25840 2-0044: Configured audio system:   automatic standard and mode detection
>    cx25840 2-0044: Specified standard:        PAL-BDGHI
>    cx25840 2-0044: Specified input:           Tuner
>    cx25840 2-0044: Specified audio input:     Tuner
>    cx25840 2-0044: Specified audioclock freq: 48 kHz
>    cx25840 2-0044: Preferred audio mode:      stereo
>    cx25840 2-0044: Selected 65 MHz format:    autodetect
>    cx25840 2-0044: Selected 45 MHz format:    chroma
>    wm8775 2-001b: Input: default
>    tda9887 2-0043: Data bytes: b=14 c=70 e=09
>    ivtv0: ==================  END STATUS CARD #0  ==================
> 
> 
> i upgraded the ivtv drivers from 0.4.3 to 0.4.5 to 0.4.6, same problem. I stayed with R5B7.
> 
> i found reference to this problem http://ivtvdriver.org/trac/ticket/79 but no follow up - i've
> posted to the author...
> 
> incidentally, the VIDEO picture is much sharper/smoother/better on .45 & .46, sound is now failing
> more often ;) 
> 
> the Aerial is good - no probs with sound on my NICAM VCR or with my mono BT878 card, cabling is
> short and simple between aerial and PVR. Picture is strong and clear, no static, we also get C4,
> Triangle (weakly - no uhf elements), juice, maori (good programming). 
> 
> so good people - your opinions poleaze
> 
> * return the PVR150 under warrantee - replace it with another version (i'll check their support
> for linux)
> * Buy new Aerial
> * Get a magic signal booster thingy from Dick Smith - Do they work?
> * Revert to my mono BT878 and shelve the PVR as a bad investment ??
> 
> thanks,Paul.
> 
> 

I have been follwing a thread about audio problems with the pvr-150. It is not the same problem as you, but it led me to play around with mine a bit. I have found that using ivtvctl -q X where X is the audio input you want can often work wonders. I think for the tuner X is 0, but you can check with ivtvctl -q 0 when sound is not working.

Hacks I have seen to do this automagically:

1. put it in a cron job every minute

2. include ivtvctl -q0 into a custom channel change script so it gets executed every time a channel is chosen.

May be worth a try.

> 
> 
> 
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around 
> http://mail.yahoo.com 
> 
> _______________________________________________
> mythtvnz mailing list
> mythtvnz@lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/