jack freebob issue

[altern]

Andrew Hunter(e)k dio:
> altern wrote:
>> hi all
>>
>> I am using a terratec phase x24 firewire sound card with an IBM laptop. 
>> It runs Ubuntu studio, the latest version, I keep it updated.
>>
>> My problem is that sometimes jack just stops suddenly. It just print 
>> some crap symbols at qjackctl message window and then I get a Shutdown 
>> notification there. After this I need to unplug the sound card to be 
>> able to start again Jack correctly. Sometimes I need to plug/unplug many 
>> times many times to get it up again.
>>
>>
>> In general I get almost no XRUNS at all. DSP loads is 16%, realtime mode 
>> is on, sample rate 48000 and buffer size 1024.
>>
>> Today I noticed that updatedb process was running in the background when 
>> I first got this error, and it seems to me that it was not until this 
>> process finished that I was able to get jack up.
>>
>> After this problem I decided to test how long it runs before crashing. 
>> It has been running fine several times for around 30-45 min. Then it 
>> stops and I need to unplug the sound card again.
>>
>> any ideas about what could cause this? or any suggestion where i should 
>> look at? I checked dmesg and I can see some stuff there but I am not 
>> sure if this is just related to me pluging in and out the sound card. I 
>> am wondering if there is some background process that I could disable to 
>> make freebob more stable. I have a live performance in ten days and it 
>> would be a real pity if jack crashes during it.
>>
>> thanks!
>>
>> enrike
>>
> You mentioned that qjackctl prints error messages, would you be able to 
> post those?

sorry I think I forgot to paste it, here it goes again

> Also, /var/crash/ might have something of use perhaps.

nothing new since december there, so i guess not interesting for this issue

btw, some more details.
$ lspci | grep 1394
02:00.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller 
(Rev 02)


The jack error :

DEBUG freebob_streaming.c:1778 (freebob_iso_packet_iterator): Go Go Go!!!
11:44:49.938 Audio connection graph change.
11:44:49.989 Audio connection change.
11:44:50.042 Audio connection graph change.
11:44:50.194 Audio connection change.
11:44:57.855 Audio connection graph change.
   -> [P, 02,       2218, 2317,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,
       4437, 4536,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,       6656,
6755,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,       8874, 0973,    0,
(R: 2048)] XRUNS ( 0)  -> [P, 02,      11093, 3192,    0, (R: 2048)]


***** same for dozens of lines .....****


[P, 02,     137557, 1656,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,
139776, 3875,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,     141994, 6093,
    0, (R: 2048)] XRUNS ( 0)unknown source port in attempted connection
[alsa_pcm:capture_1]
11:44:58.069 Audio connection change.
   -> [P, 02,     144213, 0312,    0, (R: 2048)] XRUNS ( 0)unknown
source port in attempted connection [alsa_pcm:capture_2]
unknown destination port in attempted connection [alsa_pcm:playback_1]
unknown destination port in attempted connection [alsa_pcm:playback_2]
11:45:08.288 Audio connection change.
11:45:13.808 Audio connection change.
11:56:42.712 MIDI connection graph change.
   -> [P, 02,     146432, 2531,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,
     148650, 4749,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,     150869,
6968,    0, (R: 2048)] XRUNS ( 0)  -> [P, 02,     153088, 1187,    0,
(R: 2048)] XRUNS ( 0)  -> [P, 02,     155306, 3405,    0, (R: 2048)]
XRUNS ( 0)  -> [P, 02,     157525, 5624,    0, (R: 2048)] XRUNS ( 0)  ->


***** same for hundreds of lines .....****


XRUNS ( 0)  -> [P, 02,    5746346, 2498,    1, (R: 2048)] XRUNS ( 0)  ->
[P, 02,    5748565, 4717,    1, (R: 2048)] XRUNS ( 0)zombified - calling
shutdown handler
11:56:42.965 Shutdown notification.
11:56:42.965 Client deactivated.
11:56:42.968 JACK was stopped successfully.
11:56:42.968 Post-shutdown script...
11:56:42.968 killall jackd
cannot send request type 7 to server
cannot read result for request type 7 from server (Broken pipe)
cannot send request type 7 to server
cannot read result for request type 7 from server (Broken pipe)
11:56:44.237 MIDI connection graph change.
jackd: ez da prozesurik hil
11:56:45.790 Post-shutdown script terminated with exit status=256.