[mythtv-users] DVB Card missed on power up but not reboot?

Tom Dexter digitalaudiorock at gmail.com
Tue Feb 17 17:00:30 UTC 2009


On Mon, Feb 16, 2009 at 8:52 PM, David Brodbeck <gull at gull.us> wrote:
> David Whyte wrote:
>>
>> I used to have something similar, but I think it was that they
>> wouldn't always come up after a reboot but always after a cold-start.
>> It should be in the archive here (and I will do a search of my GMail
>> later on when I get 5 minutes), but it was to do with the order that
>> certain kernel modules were loading.  I think I fixed it by adding a
>> line to my rc.local or something, but like I say, I will double check
>> soon.
>
> Some distributions are now using versions of init that run startup scripts
> in parallel, to reduce the time it takes the system to boot. I wonder if
> that's what's happening here?  Maybe mythbackend is loading before the
> script that loads the modules completes.
>
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It's not a matter of mythbackend not seeing them, it's that the system
never sees them in the first place.  That is, if I do:

dmesg | grep DVB
cx88[0]/2: cx2388x based DVB/ATSC card
DVB: registering new adapter (cx88[0])
DVB: registering frontend 0 (LG Electronics LGDT3303 VSB/QAM Frontend)...
cx88[1]/2: cx2388x based DVB/ATSC card
DVB: registering new adapter (cx88[1])
DVB: registering frontend 1 (LG Electronics LGDT3303 VSB/QAM Frontend)...
cx88[2]/2: cx2388x based DVB/ATSC card
DVB: registering new adapter (cx88[2])
DVB: registering frontend 2 (LG Electronics LGDT3303 VSB/QAM Frontend)...

I might not see all three cards 0, 1, and 2 as shown there.  The odd
thing right now is that I've been unable to duplicate the problem even
by powering down and disconnecting power :D...go figure.  About the
only thing I haven't tried to duplicate the issue is to actually leave
it powered down for some time, as is usually the case when I encounter
the issue.  Strange.

I have the cx88-dvb module set to auto-load.  I wonder if udev would
load it if I didn't have it set to autoload.  Maybe something between
the two is causing a problem(??).

Tom


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