[mythtv-users] UDEV rules

[Daryl McDonald]

On Wed, Jan 22, 2014 at 5:13 PM, Daryl McDonald <darylangela at gmail.com> wrote:
> On Wed, Jan 22, 2014 at 1:09 PM, Yianni <yiannividalis at hotmail.com> wrote:
>>> daryl at daryl-A780L3C:~$ ls -lah /dev/video*
>>> crw-rw----+ 1 root video 81, 0 Jan 22 10:26 /dev/video0
>>> crw-rw----+ 1 root video 81, 5 Jan 22 10:26 /dev/video1
>>> crw-rw----+ 1 root video 81, 7 Jan 22 10:27 /dev/video2
>>> crw-rw----+ 1 root video 81, 3 Jan 22 10:26 /dev/video24
>>> crw-rw----+ 1 root video 81, 1 Jan 22 10:26 /dev/video32
>>> lrwxrwxrwx  1 root root      6 Jan 22 10:26 /dev/videopvr150 -> video0
>>
>> Ok, the last one I've not seen before (not that I've extensive experience, but...)
>>
>>
>>
>>> Apparently I still don't get writing UDEV rules. I have three cards
>>> which support five recording formats; video0, video1, video2,
>>> adapter0, and adapter1. Because video0 has a working rule, info from
>>> the terminal is for the four remaining formats:
>>
>> Let's try again, taking into account George's suggestion for the vendor instead of subsystem_vendor:
>>
>> SUBSYSTEM=="video4linux",ATTRS{vendor}=="0x4444",ATTRS{device}=="0x0016",SYMLINK+="videopvr150",GROUP="video"
>> SUBSYSTEM=="video4linux",ATTRS{vendor}=="0x14f1",ATTRS{device}=="0x8852",SYMLINK+="analog1250",GROUP="video"
>> SUBSYSTEM=="video4linux",ATTRS{vendor}=="0x1131",ATTRS{device}=="0x1733",SYMLINK+="videoKworld",GROUP="video"
>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x14f1",ATTRS{device}=="0x8852",SYMLINK+="computerworks",GROUP="video"
>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x1131",ATTRS{device}=="0x7133",SYMLINK+="digitalPhilips",GROUP="video"
>>
>> I've reapplied the original rule for the videopvr150 device using vendor. I don't know if I got the names right especially for the last two digitals, feel free to change them.
>>
>> Try putting them all in the same .rules file (delete the previous rule) and try George's suggestion for testing the rules without rebooting.Execute each line and search for the "DEVLINKS=" line to see if the link will be created.
>>
>> udevadm test $(udevadm info -q path -n /dev/video0)
>> udevadm test $(udevadm info -q path -n /dev/video1)
>> udevadm test $(udevadm info -q path -n /dev/video2)
>> udevadm test $(udevadm info -q path -n /dev/video24)
>> udevadm test $(udevadm info -q path -n /dev/video32)
>> udevadm test $(udevadm info -q path -n /dev/dvb/adapter0/dvr0)
>> udevadm test $(udevadm info -q path -n /dev/dvb/adapter1/dvr0)
>>>
>>> Further, I didn't do very well with your test George:
>>>
>>> daryl at daryl-A780L3C:~$ udevadm trigger $(udevadm info -q path -n /dev/video0)
>>> daryl at daryl-A780L3C:~$
>>>
>> The above command doesn't show anything unless you use the --verbose parameter. (try using "udevadm trigger --help" to see the available options)
>>
>> Yianni.
>> _______________________________________________
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>> mythtv-users at mythtv.org
>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
> After running the tests, one for each of the seven lines, I get:
>
> DEVLINKS=/dev/v4l/by-path/pci-0000:04:01.0-video-index0 /dev/videopvr150
>
> DEVLINKS=/dev/analog1250 /dev/v4l/by-path/pci-0000:02:00.0-video-index0
>
> DEVLINKS=/dev/v4l/by-path/pci-0000:04:00.0-video-index0
>
> DEVLINKS=/dev/v4l/by-path/pci-0000:04:01.0-video-index3 /dev/videopvr150
>
> DEVLINKS=/dev/v4l/by-path/pci-0000:04:01.0-video-index1 /dev/videopvr150
>
> DEVLINKS=/dev/digital1250
>
> DEVLINKS=/dev/digitalKworld
>
> I'm going to reboot now and see how it looks.

I'm confused. Are we making progress?

daryl at daryl-A780L3C:~$ ls -lah /dev/video*
crw-rw----+ 1 root video 81, 0 Jan 22 17:15 /dev/video0
crw-rw----+ 1 root video 81, 5 Jan 22 17:14 /dev/video1
crw-rw----+ 1 root video 81, 7 Jan 22 17:15 /dev/video2
crw-rw----+ 1 root video 81, 3 Jan 22 17:15 /dev/video24
crw-rw----+ 1 root video 81, 1 Jan 22 17:15 /dev/video32
lrwxrwxrwx  1 root root      6 Jan 22 17:15 /dev/videopvr150 -> radio0
daryl at daryl-A780L3C:~$ ls -lah /dev/dvb*
total 0
drwxr-xr-x  4 root root   80 Jan 22 17:15 .
drwxr-xr-x 16 root root 4.6K Jan 22 17:15 ..
drwxr-xr-x  2 root root  120 Jan 22 17:14 adapter0
drwxr-xr-x  2 root root  120 Jan 22 17:15 adapter1
daryl at daryl-A780L3C:~$

The file I created is called "capture-card.rules" and it is in
/etc/udev/rules.d. The README in that directory says not to use a
number in the file name so it will be executed after files with
numbers. I'm guessing this is correct because it is having some
effect, we've changed video0 to radio0. The only devices that will be
of any use to me will be the analog pvr150, the digital1250, and the
digitalKworld, as I want to capture 1 analog signal, 1 FTA signal, and
1 QAM signal. What next?