[mythtv-users] CX88 "Blackbird" audio razziness
mythtv at rodsbooks.com
Fri Mar 2 02:30:47 UTC 2007
On Thursday 01 March 2007 12:54, Dennis Hand wrote:
> >I used the standard drivers in the 126.96.36.199 kernel; I haven't tried
> > anything from the v4l site itself. If you try that approach and don't
> > have the audio problems, I'd love to hear about it.
> I believe one of the new things in the v4l code is that they have made
> the Avermedia M150 use the standard firmware instead of the one your
> referring to. From the v4l ChangeLog.
I might look into it, then; it could be my audio problems are
firmware-related. OTOH, I did initially try the firmware pointed to by the
v4l site, but it didn't work. The drivers initially tried loading the
376,836-byte image, but that failed. A posting I found online suggested
renaming the firmware, so I tried the 262,144-byte image, but that also
failed with a message about checksum errors, IIRC. It was only when I tried
the firmware from the site described in my wiki entry that the MPEG encoder
started working. This makes me suspicious that the card might not work with
the firmware for other Blackbird-based cards, but I can't be sure of that.
Perhaps the driver was just squawking over a combination it wasn't programmed
to recognize or something.
In any event, if you try the updated v4l drivers, please report back. I might
not get around to trying them for a few days, since I'm using the card as a
second tuner, and in that role the audio bug doesn't seem to crop up very
often. Therefore I'm in no rush to spend more hours experimenting with it.
For a $5.50 eBay purchase ($13.49 shipped), I'm satisfied even if it never
works better than it does now....
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