[mythtv-users] Udev rules get mixed-up

[Daryl McDonald]

On Wed, Sep 17, 2014 at 2:42 PM, Daryl McDonald <darylangela at gmail.com>
wrote:

>
>
> On Wed, Sep 17, 2014 at 2:12 PM, Hika van den Hoven <hikavdh at gmail.com>
> wrote:
>
>> Hoi Yianni,
>>
>> Wednesday, September 17, 2014, 7:29:03 PM, you wrote:
>>
>> > al2kpro:~ # udevadm trigger --subsystem-match="dvb" -vv
>> > /sys/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2.2/dvb/dvb5.demux0
>> > /sys/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2.2/dvb/dvb5.dvr0
>> > /sys/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2.2/dvb/dvb5.frontend0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb0.demux0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb0.dvr0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb0.frontend0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb0.net0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb1.demux0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb1.dvr0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb1.frontend0
>> > /sys/devices/pci0000:00/0000:00:0c.0/0000:02:00.0/dvb/dvb1.net0
>>
>> If I look at the above there is almost no difference between the first
>> and second adaptor.
>>
>> > SUBSYSTEM=="dvb", \
>> >   ATTRS{device}=="0x8852", \
>> >   ATTRS{subsystem_vendor}=="0x6981", \
>> >   PROGRAM="/bin/sh -c ' K=%k; K=$${K#dvb}; N=$${K#*.}; \
>> >     if [ ! -e /dev/dvb/adapter_t1/$N ] ; \
>> >     then printf dvb/adapter_t1/%%s $${K#*.}; \
>> >     else printf dvb/adapter_t2/%%s $${K#*.}; \
>> >     fi ; \
>> >     exit 0'", SYMLINK+="%c"
>>
>> If I look at this rule (I made it a bit more readable) it is in
>> essence 'first come first get'. The first demux to initialise gets
>> placed in 'adapter_t1' the second in 'adapter_t2'. The same for the
>> other devices. Obviously they initialise in parallel, creating the
>> mixup.
>> I assume that the distinction between dvb0 and dvb1 is made on the
>> hardware order, if not, if this is also based on 'first come first
>> get' there is, as I see it no way to distinguish the two adaptors.
>> My next assumption is that the distinction between adaptor0 and
>> adaptor1 is equal to the distinction between dvb0 and dvb1. So any
>> udev-rule can not add anything in the distinction.
>>
>> 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
>>
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>>
> Are adapters 0,1, and 5 separate capture devices? do you have only the two
> video sources? Assuming yes to both Q's split only one source into the dual
> and source other cards as you see fit.
>
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