[mythtv-users] UDEV rules

[Daryl McDonald]

On Sat, Jan 25, 2014 at 4:55 PM, Hika van den Hoven <hikavdh at gmail.com> wrote:
> Hoi Daryl,
>
> As a help, this is the build-in v4l rule on my Gentoo system:
>    /lib64/udev/rules.d/60-persistent-v4l.rules
>
> # do not edit this file, it will be overwritten on update
>
> ACTION=="remove", GOTO="persistent_v4l_end"
> SUBSYSTEM!="video4linux", GOTO="persistent_v4l_end"
> ENV{MAJOR}=="", GOTO="persistent_v4l_end"
>
> IMPORT{program}="v4l_id $devnode"
>
> SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id"
> KERNEL=="video*", ENV{ID_SERIAL}=="?*", SYMLINK+="v4l/by-id/$env{ID_BUS}-$env{ID_SERIAL}-video-index$attr{index}"
>
> # check for valid "index" number
> TEST!="index", GOTO="persistent_v4l_end"
> ATTR{index}!="?*", GOTO="persistent_v4l_end"
>
> IMPORT{builtin}="path_id"
> ENV{ID_PATH}=="?*", KERNEL=="video*|vbi*", SYMLINK+="v4l/by-path/$env{ID_PATH}-video-index$attr{index}"
> ENV{ID_PATH}=="?*", KERNEL=="audio*", SYMLINK+="v4l/by-path/$env{ID_PATH}-audio-index$attr{index}"
>
> LABEL="persistent_v4l_end"
>
>
> 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, 10:21:21 PM, you wrote:
>
>> On Sat, Jan 25, 2014 at 4:11 PM, Bill Meek <keemllib at gmail.com> wrote:
>>> On 01/25/2014 02:34 PM, Andrew C. (AFPup) Stadt wrote:
>>>
>>> ...
>>>
>>>> Ok, so you've got the udev rules making the appropriate symlinks, you've
>>>> verified that the 'mythtv' user is indeed a member of the video group,
>>>> and the device nodes have the appropriate permissions (eg, read/writable
>>>> by the video group).
>>>>
>>>> I guess that leaves a couple things: what exactly are you entering for the
>>>> path to the device in mythtv-setup, and who are you running
>>>> mythtv-setup as?  Are you logged in as the 'mythtv' user, or are you
>>>> logged in as someone else?
>>>
>>>
>>> I had a few minutes to test this and no, the rules are creating symlinks
>>> to /dev/dvb/adapter0/net0 which is wrong. The link *must* be to frontend0
>>> (or at least they were pointing to net0 last time Daryl posted them.)
>>>
>>> Creating the symlinks manually, this will fail:
>>>
>>>     sudo ln -s /dev/dvb/adapter0/net0 /dev/someName
>>>
>>> and this will work:
>>>
>>>     sudo ln -s /dev/dvb/adapter0/frontend0 /dev/someOtherName
>>>
>>> So the issue here is how to create a proper udev rule
>>> that selects frontend0, not net0. I haven't had time
>>> to find the proper key/value pair to correct this.
>>>
>>> And, Daryl, I had to type the link names in manually, they
>>> weren't available using the left and right arrows.
>>>
>>> No need to delete the capture cards for this to work, just
>>> edit the existing card.
>>>
>>> --
>>> Bill
>>>
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
>> OK so currently the two digital cards look like:
>> lrwxrwxrwx  1 root root   15 Jan 25 13:43 dig1250 -> adapter0/demux0
>> lrwxrwxrwx  1 root root   13 Jan 25 13:43 DigKW150 -> adapter1/net0
>
>> and the corresponding rules are:
>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x14f1",ATTRS{device}=="0x8852",SYMLINK+="dvb/dig1250",GROUP="video"
>
>> SUBSYSTEM=="dvb",ATTRS{vendor}=="0x1131",ATTRS{device}=="0x7133",SYMLINK+="dvb/DigKW150",GROUP="video"
>
>> I'm going back to the udev wiki and see if I can beat anything into
>> this thick Irish cranium of mine.
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://www.mythtv.org/mailman/listinfo/mythtv-users

Implementing Yianni's revise rules looks like this after a re-boot:
daryl at daryl-A780L3C:~$ ls -lah /dev/dvb*
total 0
drwxr-xr-x  4 root root  120 Jan 25 17:09 .
drwxr-xr-x 16 root root 4.6K Jan 25 17:09 ..
drwxr-xr-x  2 root root  120 Jan 25 17:09 adapter0
drwxr-xr-x  2 root root  120 Jan 25 17:09 adapter1
lrwxrwxrwx  1 root root   13 Jan 25 17:09 HP1250 -> adapter0/net0
lrwxrwxrwx  1 root root   15 Jan 25 17:09 KW150 -> adapter1/demux0
daryl at daryl-A780L3C:~$
(my own modifications on symlink names)  I'm going to see if the HP
1250 symlink sticks.
>