On 9/24/11 12:06 AM, Antti Palosaari wrote:
On 09/24/2011 12:06 AM, Jin Kazama wrote:
Hello,
I've been testing af9015/tda18218 based usb DVB-T tuners on a 2.6.39.4
kernel with the latest v4l drivers avaiable (from git).
When I'm using a single USB module, (listed as /dev/dvb/adapter0),
everything works fine.
When I'm plugging another module, at first it looks like everything's ok
(/dev/dvb/adapter1) and if I try to use this module while the adapter0
is not been used, it works - but if try to use both modules at the same
time, I get garbage output on both cards (error: warning: discontinuity
for PID... with dvblast on both cards.
Does anyone have any idea on how to fix this problem?
Feel free to fix it. I am too busy currently.
Well, it looks like if I put 2 devices on different USB buses (on the
same machine), they work fine, but if they're on the same USB bus, I get
the problem...
I think the driver may get raw data from the USB bus - and the way it
identifies the device is not the proper way (I have 2 exactly identical
devices) => when both devices send data, the driver catches all the data
from the bus, which is a corrupt mix of both streams...)
Unfortunately, I don't think that I'm capable of fixing the problem by
myself, I don't even know which part of the driver to look for... if
someone can give me a hint, I might *try* to *attempt* to fix it :)...
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