[mythtv-users] A few questions (Directv, lirc priority)

Brad DerManouelian myth at dermanouelian.com
Thu Dec 14 03:34:50 UTC 2006

On Dec 13, 2006, at 6:19 PM, Richard Freeman wrote:

> Jeff Simpson wrote:
>> I've talked to some people that had success on that front. I would
>> recommend going for hardware serial ports, first though, since USB
>> dongles would make it tough to determine which one goes to which
>> tuner, since the order you plug the receivers in makes a difference
> This is an issue.  I ended up messing with my hotplug scripts to force
> them to map in a particular way based on what ports they were plugged
> into.  Actually, it looks like that file got changed on me and it is
> still working - the system must load them in a certain order on  
> boot and
> I've just been lucky enough to not have removed them while the  
> system is
> running.  I do find it odd that the vendors of these things don't put
> some kind of unique identifier in them - of what use is a serial  
> adapter
> if you can't tell what serial port it is?
>> (plus you'd need a total of 8 USB->Serial adapters for 4 STBs, which
>> might be a tad ridiculous).
> Uh, you'd need one for each.  I have two adapters and two STBs.  They
> only have one serial port (unless this is some odd STB model I'm  
> unaware
> of).

The D-11 box has a USB-shaped connector that is really a "low speed  
data port" (i.e. serial connection) so if you have this box, you need  
a USB to serial adaptor, null modem, then serial to USB back into the  
linux box. I have 2 boxes with 1 serial port each but I'd like both  
D-11's to record on the same backend, so I might give this a try. I  
happen to have an extra USB -> Serial adaptor, but it's not one of  
the ones that is known to work with the D-11. I wonder if it will  
still work on the machine side and put the known good one on the D-11  
side. I guess I'll find out soon enough...

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