[mythtv-users] Two tuner sticks unstable together - need help

[Greg]

  On 10/14/2010 12:21 PM, Sven Bretfeld wrote:
> Hi to all
>
> I have two DVB-T USB sticks. Both are working fine with Mythtv
> (Mythbuntu 10.10), IF ONLY ONE OF THEM IS PLUGGED!
>
> If I configure both as separate inputs, the setup becomes unstable. There
> are three possibilities that can happen without any understandable
> logic:
>
> 1. Both work fine
> 2. Only one is recognized by the Frontend (not possible to switch to the
>     second source)
> 3. Both are recognized by the Frontend but only one gets a lock.
>
> I set up Mythbackend today with both sticks. It was working fine for
> some hours. After a few reboots (I had some maintenance to do)
> possibility 2 happened. I reconfigured Mythbackend, both sticks were
> doing well. The frontend recognizes the two sources, but the second one
> can't get a lock.
>
> What strange thing happens here?
>
> I would highly appreciate help.
>
> Sven
>
>
> PS: Both sticks are sucessfully initialized at startup. Here is the
> dmesg output:
>
>      a) dvb-usb: AverMedia AVerTV Volar Black HD (A850) successfully
>         initialized and connected.
>
>      b) dvb-usb: Hauppauge Nova-T Stick successfully initialized and
>         connected.
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>
I don't own any usb cards ,but my guess ( and that's all I am doing) is 
that they are starting up on a different node each time...Investigate 
udev rules for them...