[LAU] Qjackclt cramps

[thijs van severen]

2012/3/8 Rui Nuno Capela <rncbc at rncbc.org>

> On 03/07/2012 09:42 PM, Fons Adriaensen wrote:
>
>> Hello all,
>>
>> I wonder if I'm the only one experiencing this problem with
>> Qjackctl. Anyway I haven't seen any other reports of it.
>> The problem is so obvious that I myself never bothered to
>> report it - it's the thing you exect fixed in the next
>> release. But apprently it never gets fixed.
>>
>> To the facts now: almost every day when I use it, and for
>> the last years, Qjackctl get into some cramp in which it
>> either
>>
>> - refuses to make some connections,
>> - or refuses to show them,
>> - or makes them and then disconnects them immediately.
>>
>> I don't know what triggers this, but it could be related to apps
>> making lots of ports connections in a short time and Qjackctl's
>> idea of current connections getting out of sync with reality.
>> Given Jack's APi for this that is no big surprise, but what really
>> messes up things is that Qjackctl apparently has no means to recover
>> and refresh its connections database from scratch. The only option
>> is to terminate it (which takes Jack and all apps with it, unless
>> Jack was started separately).
>>
>>
> i had never seen this kind of trouble, but again i seldom run hundreds of
> port (dis|re)connections in probably short time
>
> don't the "connections "refresh" button is of any help here, perhaps? i
> mean, instead of a proverbial stop/start?
>
> since last qjackctl released version (>= 0.3.8) the "refresh" button does
> a complete rebuild of all connection listings instead of using some or any
> previously cached items which i think is the culprit of potential race
> conditions, specially if you're disconnecting and/or reconnecting (a lot
> of) ports with same literal names on so short notice
>
> byee
> --


in my case the number of connections is very limited, and the refresh
button is not enough, it needs a restart Qjack to update the connections
correctly (that is only Qjack, not jackd)
i'll see if i can find a simple way to reproduce

grtz
Thijs
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