[mythtv-users] UDEV rules

[Daryl McDonald]

On Sat, Jan 25, 2014 at 1:54 PM, Daryl McDonald <darylangela at gmail.com> wrote:
> On Sat, Jan 25, 2014 at 10:47 AM, Hika van den Hoven <hikavdh at gmail.com> wrote:
>> Hoi Daryl,
>>
>> If you just look in /dev for the exact filename and path, you can type that
>> name in the field in Myth-setup
>
> When I try to change whatever presents itself in the field I get
> "failed to open"
>>
>> 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
>> --
>>
>> Saturday, January 25, 2014, 4:14:38 PM, you wrote:
>>
>>> On Fri, Jan 24, 2014 at 8:46 PM, Roger Siddons <dizygotheca at ntlworld.com> wrote:
>>>> On Sat, 25 Jan 2014 00:21:33 -0000, Bill Meek <keemllib at gmail.com> wrote:
>>>>
>>>>> On 01/23/2014 11:18 PM, George Nassas wrote:
>>>>>>>
>>>>>>> On Jan 23, 2014, at 6:01 PM, Daryl McDonald <darylangela at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>> OK I just went into setup>capture cards, and when I try to change
>>>>>>> /dev/dvb/adapter0/frontend0 to anything with "dig1250" in it, I get
>>>>>>> "failed to open" the only thing that opens is what presents when I
>>>>>>> navigate through new cards. Obviously I'm missing how to or what to
>>>>>>> change. Similarly with the other cards the symlink name returns
>>>>>>> "failed to open" Help?   Daryl
>>>>>>
>>>>>>
>>>>>> You're making the right change in the right place. Probably the myth
>>>>>> backend is still running, it takes an exclusive lock on capture cards and
>>>>>> that would cause such a failure. Normally when the setup program sees an
>>>>>> active backend it offers to shut it down although that shutdown is not
>>>>>> necessarily reliable in my experience.
>>>>>>
>>>>>> On the plus side it looks like the symlink is good. It's clearly pointing
>>>>>> to a tuner.
>>>>>>
>>>>>> - George
>>>>
>>>>
>>>> Another possibility: if you're *editing* the existing capture cards, won't
>>>> mythtv-setup already have opened the tuner ? So it won't be able to open it
>>>> again via your new symlink = 'failed to open'
>>>>
>>>> Whenever I do this sort of thing I always 'delete all' capture cards first,
>>>> then define new ones...
>>
>>> Like I told Mark, after deleting all cards and selecting new card the
>>> only options that present with the left/right arrows are /dev/whatever
>>> or/video/whatever no symlinks show up.
>>>>
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>>
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Here is the "grep" you suggested Mark:
daryl at daryl-A780L3C:~$ cat /etc/group | grep video
video:x:44:mythtv
daryl at daryl-A780L3C:~$

And further, on a whim, I went into the BE deleted all capture cards,
then rebooted, and then went in again and was still not presented with
symlink names, only /dev/adapter0/frontend0, /dev/adapter1/frontend0,
/dev/video0, /dev/video24, /dev/video36, and only by backspacing and
typing can I get /dev/video1, or /dev/video2, they won't present with
left/right arrows, but they are recognized as "saa7134" and "Kworld
pc150u" so although the symlinks look good, maybe they didn't fully
take?

I don't fully understand the output from the grep, but my gut feeling
is that since I am able to configure the cards, without udev involved,
permissions must be correct, right?

thanks Daryl