[mythtv] 0.21 Firewire bus reset every 60 seconds?

[Derek Atkins]

Hi,

Derek Atkins <warlord at MIT.EDU> writes:

> Here's an example of the backend log between the 60-second "okay period":
>
> 2008-06-11 08:43:37.498 LFireDev(000E5CFFFE5AF9A5): SignalReset(86->87)
> 2008-06-11 08:43:37.553 LFireDev(000E5CFFFE5AF9A5): SignalReset(86->87): Updating device list -- begin
> 2008-06-11 08:43:37.815 LFireDev(000E5CFFFE5AF9A5): SignalReset(86->87): Updating device list -- end
> 2008-06-11 08:43:37.917 LFireDev(000E5CFFFE5AF9A5), Warning: No Input in 50 msec...
> 2008-06-11 08:44:37.501 LFireDev(000E5CFFFE5AF9A5), Warning: No Input in 100 msec...
> ...

After updating libraw1394 from 1.2.1 to 1.3.0 this kind of error seems
to have been reduced..  But it also seems to be a problem if the
firewire broadcast bus isn't completely synched.  For example, the
myth box was rebooted yesterday and then the first recording had
this issue.  But then I reset the bus manually using firewire_tester
(which, by the way, took two or three tries before it synced!)..
and then my recording this morning was fine.

So something weird is still going on, but at least the libraw upgrade
seems to have helped.

Any other suggestions?  My next step is to setup a script to run
firewire_tester on boot-up to make sure the bus is stable before
mythbackend runs.

-derek

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord at MIT.EDU                        PGP key available