[mythtv-users] duplicate dvb tuner shows up

[David Whyte]

Could it be that you have configured that tuner so that it can be used for
two separate recordings? I think that is the default in the settings for
DVB-T.
On 30 Apr 2015 5:11 pm, "John Pilkington" <J.Pilk at tesco.net> wrote:

> On 30/04/15 05:14, James Miller wrote:
>
>> I actually have 3 dvb capture devices on my new MythTV machine, only one
>> of which I actually use--a K-World USB stick I've posted about here
>> previously (UB435 -Q). My other 2 USB tuners are used solely for
>> recording NTSC cable (HVR-1950), though they, too, have dvb
>> functionality. But I do not use that capability on those tuners--just
>> their NTSC capability.
>>
>> To keep better track of these dvb tuners and to make certain the K-World
>> one gets used for its intended purpose of tuning OTA channels, I created
>> a udev rule that makes a symlink for it under a clearly-recognizable
>> name that has KWorld in it. I had some trouble selecting that symlink
>> when I set up the capture device and had to enter the symlink path
>> manually. But I was able to set it up and have tested some live TV
>> viewing and have done some recordings with it.
>>
>> The strange thing about this particular tuner that I'd like to ask about
>> here is the fact that it shows up twice when, for example, I look at
>> backend status using MythWeb: I have an encoder 14 and an encoder 16
>> that both are associated with the symlink I created. Also, while doing
>> some test viewing of live TV, when I go to switch inputs, there are two
>> entries for this device in the menu. In mythtv-setup, however, it
>> appears only once.
>>
>> I'm curious as to why in the frontend there appears to be a duplicate of
>> this capture device, and whether that is a sign of, or might lead to,
>> some problem. I did note at a certain point while looking through the
>> capture card configurations under mythtv-setup, something to the effect
>> that these dvb tuners can record from 2 channels simultaneously, if the
>> broadcast source allows for that. Could this be the reason why this
>> tuner shows up in duplicate?
>>
>> Input on this issue will be appreciated. Thanks
>>
>
> AIUI the udev rule should ensure that the association between hardware and
> adapter number will be unchanged by reboots.  Extra capture devices will
> appear if you don't 'delete /all/ capture cards' while revising things in
> mythtvsetup.  See lots of posts from Mike Dean on that...
>
> HTH
>
> John P
>
>
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