[mythtv-users] UDev rules for Dual Tuner Cards

[Another Sillyname]

On 4 April 2010 08:13, Andre <mythtv-list at dinkum.org.uk> wrote:
>
> On 4 Apr 2010, at 06:46, Steven Ellis wrote:
>
>> I'm having some issues getting a UDEV rule to work correctly for a
>> Hauppauge HVR-2200 card. My box has multiple DVB T + S cards and I want
>> to make sure they get mapped to the same device numbers on each boot.
>
> There is another way, most of the v4l-dvb modules have a option parameter to specify the adapter numbers, for example:
>
> I have a /etc/modprobe.d/SatixS2.conf  file containing:
>
> options ngene adapter_nr=10,11
>
> Then you need to depmod and rebuild initrd so that the correct options are set on boot, for Ubuntu the easiest way is:
>
> dpkg-reconfigure linux-image-2.6.31-20-generic
>
> or similar.
>
> modinfo modulename will tell you if your adaptor's module supports the adapter_nr parameter.
>
> Andre
>
>
>>
>> Using the tips on the MythTV Wiki
>> -
>> http://www.mythtv.org/wiki/Device_Filenames_and_udev#Example_for_twin_tuner_cards_with_no_difference_in_udevinfo_output
>>
>> I came up with the following rules
>>
>> SUBSYSTEM=="dvb", ATTRS{vendor}=="0x1131", ATTRS{device}=="0x7164", ENV{hvr2200}!="two", ENV{hvr2200}="two", PROGRAM="/bin/sh -c
>> 'K=%k; K=$${K#dvb}; printf dvb/adapter170/%%s $${K#*.}'", SYMLINK+="%c"
>> SUBSYSTEM=="dvb", ATTRS{vendor}=="0x1131", ATTRS{device}=="0x7164", ENV{hvr2200}=="two", ENV{hvr2200}="one", PROGRAM="/bin/sh -c
>> 'K=%k; K=$${K#dvb}; printf dvb/adapter171/%%s $${K#*.}'", SYMLINK+="%c"
>>
>>
>> The idea being that the two tuners always get mapped as devices 170 and 171.
>>
>> It looks like there is some sort of race condition as after a reboot I
>> end up with the following
>>
>> /dev/dvb/adapter170:
>> total 0
>> lrwxrwxrwx 1 root root 18 2010-04-03 18:10 demux0 -> ../adapter2/demux0
>> lrwxrwxrwx 1 root root 16 2010-04-03 18:10 dvr0 -> ../adapter1/dvr0
>> lrwxrwxrwx 1 root root 21 2010-04-03 18:10 frontend0 -> ../adapter1/frontend0
>> lrwxrwxrwx 1 root root 16 2010-04-03 18:10 net0 -> ../adapter2/net0
>>
>> /dev/dvb/adapter171:
>> total 0
>> lrwxrwxrwx 1 root root 18 2010-04-03 18:10 demux0 -> ../adapter2/demux0
>> lrwxrwxrwx 1 root root 16 2010-04-03 18:10 dvr0 -> ../adapter1/dvr0
>> lrwxrwxrwx 1 root root 21 2010-04-03 18:10 frontend0 -> ../adapter1/frontend0
>> lrwxrwxrwx 1 root root 16 2010-04-03 18:10 net0 -> ../adapter2/net0
>>
>> With this neither of the adapters work as the symlinks are a mess.
>>
>> Has anyone managed to come up with a sensible udev rule for a HVR-2200
>> or HVR-2250 card?
>>
>> Thanks
>>
>> Steve
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>>
>
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Are you just setup with HVR 2200 or are you using other inputs as well?