[mythtv-users] tuner numbering

[Hika van den Hoven]

Hoi Daryl,

Sunday, March 2, 2014, 10:32:07 PM, you wrote:

> On Sun, Mar 2, 2014 at 2:30 PM, Daryl McDonald <darylangela at gmail.com> wrote:
>> On Sat, Mar 1, 2014 at 8:35 PM, Roger Siddons <dizygotheca at ntlworld.com> wrote:
>>> On Sat, 01 Mar 2014 23:55:26 -0000, Bill Meek <keemllib at gmail.com> wrote:
>>>
>>>> On 03/01/2014 03:15 PM, Hika van den Hoven wrote:
>>>> ...
>>>> > Seems OK. I then have one thought left. rename the directories to
>>>>> adapterHP1250 and adapterPC800i. It is theoretically possible that
>>>>> mythtv looks for names starting with adapter.
>>>>> If that doesn't work, I'm out of thoughts for now.
>>>>
>>>> I believe it's better than theoretical if you also add .../frontend*,
>>>> see:
>>>>
>>>>
>>>> https://code.mythtv.org/cgit/mythtv/tree/mythtv/libs/libmythtv/cardutil.cpp#n292
>>>>
>>>> Looks any /dev/dvb/adapter*/frontend* would be included in the list
>>>> of returned DVB devices. So, /dev/dvb/adapterHP1250/frontend0 would
>>>> work, although I didn't test it.
>>>>
>>>
>>> I can confirm it. Well done Hika and Bill ! This was really bugging me...
>>>
>>> When I set my system up, I happened to use "adapter_nova1" etc. for purely
>>> stylistic reasons and have never had any issues. But when I reproduced
>>> Daryl's problem I used a dummy adapter called "test". After renaming it to
>>> "adapter_test" it now shows up in the list and 'sticks'.
>>>
>>> I believe it's an issue with the Capture Cards dialog. If you type the name
>>> in, it gets written to the database and Myth functions correctly but
>>> thereafter the dialog won't report the card adapter correctly, simply
>>> defaulting to displaying adapter0 (the symlink is actually using adapter2).
>>> Any edits (changing multirec, for example), results in a new card being
>>> created on adapter0, which is already linked to an input. So setup now
>>> reports 2 cards (test and adapter0) but the frontend only sees 1 (test),
>>> which works fine. Presumably the database has been cross-linked/corrupted.
>>>
>>> IMHO this naming requirement should be added to the wiki at
>>> http://www.mythtv.org/wiki/Device_Filenames_and_udev. Any takers ?
>>> Of course, all the examples do use "adapter*" but it doesn't state anywhere
>>> that this is essential.
>>>
>>> Incidentally I also found that LiveTV only works if there are links defined
>>> for frontend0, dvr0 and demux0. Not sure what net0 is used for.
>>>
>>> So Daryl, for the avoidance of doubt, these are the latest recommendations:
>>>
>>> SUBSYSTEM=="dvb", ATTRS{device}=="0x8852", PROGRAM="/bin/sh -c 'K=%k;
>>> K=$${K#dvb}; printf dvb/adapterHP1250/%%s $${K#*.}; exit 0'", SYMLINK+="%c"
>>>
>>> SUBSYSTEM=="dvb", ATTRS{device}=="0x8802", PROGRAM="/bin/sh -c 'K=%k;
>>> K=$${K#dvb}; printf dvb/adapterPC800i/%%s $${K#*.}; exit 0'", SYMLINK+="%c"
>>>
>>>
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>>
>> Lots of recordings today, but I changed the digital-card.rules as
>> suggested. There is a break in recordings between 4 and 5 pm, when
>> I'll go in and prove the theory on my box, and report back.
>> Afterwards, I think it's only fair that I be the one to amend  the
>> wiki. Which one is it? And is there a wiki for amending a wiki?
>> Seriously, I feel indebted but I'm not sure how to proceed.   Thanks
>> to all,  Daryl

> I love Mythtv, everything worked as promised, DEVLINK names presented
> and are now set in my BE. Furthermore, I managed to figure out how to
> edit the wiki in question, so it now reads:

> Example DVB device rule file (for the digital side of the Hauppauge
> HVR-1950 device)

> Use udevadm to find the HVR-1950 serial number as documented above.
> This script creates a symlink of /dev/dvb/adapter200/<x> to the base
> /dev/dvb/adapter{n}/<x> devices using udev environmental variables (no
> shell programming required as above). Alter (ONLY) the serial number
> and symlink name to your requirements.

> I added the "ONLY" in brackets, sufficient? appropriate? I am into
> paying it forward any way I can.   Again, many thanks Daryl
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Sounds OK. As only possible add-on you could explicitly state that the
directory name in the simlink always should start with adapter
followed by a descriptive part, followed by your example.

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens
--