[mythtv-users] tuner numbering

[Daryl McDonald]

On Wed, Feb 26, 2014 at 4:14 PM, Roger Siddons <dizygotheca at ntlworld.com> wrote:
> On Wed, 26 Feb 2014 18:57:25 -0000, Daryl McDonald <darylangela at gmail.com>
> wrote:
>
>> On Mon, Feb 24, 2014 at 3:27 PM, Roger Siddons
>> <dizygotheca at ntlworld.com> wrote:
>>>
>>> Correct. That was my suggestion at
>>> http://www.gossamer-threads.com/lists/mythtv/users/562186?#562186
>>>
>>> Fixing adapter numbers is a simple solution if you don't swap tuners
>>> about
>>> and can remember what each adapter is months/years later. Personally I
>>> like
>>> to see my own symlink names in the dialog.
>>>
>
>>
>> Have you had any luck getting the symlink name to stay put in >capture
>> cards, for digital cards?
>>>
>
> I only have digital cards. And when I start mythtv-setup the capture cards
> still refer to the symlinks they were assigned. My guess is that when setup
> starts/exits, it validates the cards and resets yours to a default (first?)
> because it can't find the dvr0, demux0 or net0 devices.
>
> These rules are based on the information you posted previously. Change the
> "dig1250" and "DigKW150" to whatever you like.
>
> SUBSYSTEM=="dvb", ATTRS{vendor}=="0x14f1", ATTRS{device}=="0x8852",
> PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/dig1250/%%s $${K#*.};
> exit 0'", SYMLINK+="%c"
>
> SUBSYSTEM=="dvb", ATTRS{vendor}=="0x1131", ATTRS{device}=="0x7133",
> PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/DigKW150/%%s $${K#*.};
> exit 0'", SYMLINK+="%c"
>
> Rather than creating a single symlink to adapterN/frontend0 it uses shell
> script to create symlinks for all the adapter's device nodes.
>
> Your digital adapter directories should look like this. Note each line of
> the device node begins with a "c" meaning it's a 'character file' (a
> device).
>
> $ ls -l /dev/dvb/adapter0
> total 0
> drwxr-xr-x 2 root root 120 Jan 25 19:44 ./
> drwxr-xr-x 12 root root 240 Jan 25 19:44 ../
> crw-rw----+ 1 root video 212, 0 Jan 25 19:44 demux0
> crw-rw----+ 1 root video 212, 1 Jan 25 19:44 dvr0
> crw-rw----+ 1 root video 212, 7 Jan 25 19:44 frontend0
> crw-rw----+ 1 root video 212, 2 Jan 25 19:44 net0
>
> If your system places dig1250 on adapter0 then the udev rule will create
> directory dig1250 as follows. Note each line begins with "l" meaning it's a
> symbolic link and each file links to the similarly named device node on the
> appropriate adapter, so Myth should be happy.
>
> $ ls -l /dev/dvb/dig1250/
> total 0
> lrwxrwxrwx 1 root root 18 Jan 25 19:44 demux0 -> ../adapter0/demux0
> lrwxrwxrwx 1 root root 16 Jan 25 19:44 dvr0 -> ../adapter0/dvr0
> lrwxrwxrwx 1 root root 21 Jan 25 19:44 frontend0 -> ../adapter0/frontend0
> lrwxrwxrwx 1 root root 16 Jan 25 19:44 net0 -> ../adapter0/net0
>
> I don't know how you've configured your analog card but be careful not to
> disrupt it. You could even put your digital udev rules in a separate *.rules
> file to the analog one(s).
>
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I must have missed something, because after a "digital-card.rules"
file, that looks like:
SUBSYSTEM=="dvb", ATTRS{class}=="0x040000", ATTRS{device}=="0x8852",
PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/HP1250/%%s $${K#*.};
exit 0'", SYMLINK+="%c"

SUBSYSTEM=="dvb", ATTRS{class}=="0x048000", ATTRS{device}=="0x08802",
PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/PC800i/%%s $${K#*.};
exit 0'", SYMLINK+="%c"

the second card is a different one that had the same vendor "info", so
I substituted class "info"

daryl at daryl-A780L3C:~$ ls -l /dev/dvb/adapter*
/dev/dvb/adapter0:
total 0
crw-rw----+ 1 root video 212, 5 Feb 26 17:21 demux0
crw-rw----+ 1 root video 212, 6 Feb 26 17:21 dvr0
crw-rw----+ 1 root video 212, 4 Feb 26 17:21 frontend0
crw-rw----+ 1 root video 212, 7 Feb 26 17:21 net0

/dev/dvb/adapter6:
total 0
crw-rw----+ 1 root video 212, 1 Feb 26 17:20 demux0
crw-rw----+ 1 root video 212, 2 Feb 26 17:20 dvr0
crw-rw----+ 1 root video 212, 0 Feb 26 17:20 frontend0
crw-rw----+ 1 root video 212, 3 Feb 26 17:20 net0
daryl at daryl-A780L3C:~$

The above still look like devices, not links :-(

I am in a stable spot right now with the module options, but the
thought of accomplishing my goal so elegantly, with the script you're
suggesting, is quite tantalizing.   Thanks Daryl



>