[mythtv-users] Permission problem on /dev/video 0-3

[MacNean Tyrrell]

On Thu, Jul 29, 2010 at 8:49 PM, MacNean Tyrrell <dardack at gmail.com> wrote:

>
>
> On Thu, Jul 29, 2010 at 7:44 PM, Nick Rout <nick.rout at gmail.com> wrote:
>
>> On Fri, Jul 30, 2010 at 6:01 AM,  <mythtv.t.wuuza at xoxy.net> wrote:
>> >> Is there a way to do this in rc.local, i have a loop on my laptop to
>> > wait
>> >> until iwconfig has an ip address and then mount -a, because samba was
>> > not
>> >> mounting my shares correctly because the wireless took so long to get
>> an
>> > ip
>> >> address. So would love a way to wait for mythbackend to start, or
>> > restart
>> >> mythbackend once mythfrontend is running.
>> >
>> > I don't know.  I'm not all that familiar with this stuff, especially
>> since
>> > things have been changing recently (like upstart).  If he's got a
>> default
>> > Mythbuntu install then mythtv-backend is an upstart job.  You could
>> write
>> > another upstart job that does the checking loop, and then modify the
>> > mythtv-backend job to depend on that one (ie add it to "start on"
>> stanza).
>> >  Writing the upstart job is easy - I have one in there that calls the
>> same
>> > firewire primer script as my sleep/resume script does.  In Kubuntu 8.04
>> > there was an issue where the backend started before networking was fully
>> > loaded and it never found my HDHomeRun.  For that I just took the easy
>> > route and put a "sleep 10" in the backend init script, so that would be
>> > another easy option.
>>
>> I suspect the backend is starting before the pvr module is loaded, and
>> the permission denied message is because the device nodes simply are
>> not there.
>>
>> Add a delay to the backend startup script, or restart the backend in
>> /etc/rc.local.
>>
>> That's the thing i did.  I have:
>
> /usr/bin/service mythtv-backend restart
>
> But it still doesn't fix it.  However, once X is loaded if i run same
> command it's fine.
>

Just was at my dad's.  A sleep 25 before restart fixed the problem, probably
could reduce it a bit to 20, but 10 was too soon, i jumped to 25, once
frontend loaded 1 second later it said couldn't find backend, then that
message went away, and the tuners were available.

 Supposedly upstart should be able to create a situation where it says
>> "start the backend after the following modules have loaded" - but the
>> mythbuntu engineers do not seem to be able to get it to work like
>> that. (of course everyone has different "modules" that need to  load
>> first)
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>>
>
>
>
> --
> Sincerely,
>
> MacNean C. Tyrrell
>



-- 
Sincerely,

MacNean C. Tyrrell
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