nick at rout
Jul 17, 2006, 3:09 AM
Post #9 of 9
On Sun, 16 Jul 2006 18:38:29 -0700 (PDT)
Re: PVR-150 - missing audio 1 time in 10?
[In reply to]
paul arthur <paul_arthur [at] yahoo> wrote:
> Steve - spot on - you've covered some ground !
> root [at] moonmyt:~# 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 ??
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.
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