[pvrusb2] pvrusb2 vs. em8300
isely at isely.net
Thu Feb 16 23:04:01 CST 2006
I wonder if an I2C driver related to the em8300 is probing the pvrusb2 bus
and screwing up the msp3400? (That's the audio processor.) This wouldn't
match with the behavior Roger is getting, but there's an easy test you can
try. Let's force the msp3400 to reset. Do this after em8300 is
installed and established:
modprobe -r msp3400
That will cause the msp3400 module to reinitialize and as a side effect
the audio hardware will be reprogrammed. The pvrusb2 driver will feed
config data to msp3400 when it reappears.
A more brute force thing you can do is also this: Just power cycle the PVR
USB2 hardware after em8300 is established. Do that produce an interesting
result. I apologize if you've already tried this (but I want to be sure
this has been tried).
On Thu, 16 Feb 2006, Michael Roitzsch wrote:
>> Does the pvrusb2 display video?
> Yes, video is always there.
>> If it is just an audio problem, are you trying to use the analog
>> line-out or the AC3 audio from the Dxr3?
> Neither. I am using my ordinary soundcard.
>> What program are you using to tell if the pvrusb2 is working fine?
> Mostly xine. But I have also used ffmpeg to extract and decode the
> audio stream directly off the device and looked at the resulting PCM
> data in a hex editor. It consists almost entirely of 0x00's, with
> some very rare occurrences of other values.
>> Did you get the em8300 to work without a pvrusb2 attached?
> The em8300 always works. No matter what the pvrusb2 does.
>> tv-out and/or overlay?
> I am only using TV-out here.
>> analog and/or ac3?
> Digital PCM and AC3.
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> pvrusb2 at isely.net
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