[LAD] [ANN] QjackCtl 0.3.7 released!

Rui Nuno Capela rncbc at rncbc.org
Tue Nov 30 19:02:00 UTC 2010

JACK Session managerism...

This might well be ahead of its time. And probably is. JACK session
infrastructure and its promised functionality is still dormant in
subversion source pits. However, good news are, no matter which flavor
you pick, either JACK1 (>= 0.119.2) or JACK2 (>= 1.9.7), both already do
it all to the promise. However still on their respective SVN trunks though.

Maybe this very announcement will get that all loose and out of the dorm
;) At least, I'm trying.

Meanwhile and until that ever happen, QjackCtl will be already here even
though its JACK Session manager(istic) features will be just lurking to
get out of redundancy. Fact is, this new source won't do much better
than that of good old Patchbay, if compiled with existing JACK package
distributions (latest are 0.118.0 and 1.9.6, respectively). Nor even
close. Actually, only when it gets ever compiled and built against a
current JACK Session API it will take off. Fly high or low, you may ask.
Well, may I say, it will only fly as high as many Linux audio
application developers will do to embrace the daunting trouble of adding
a few dozen lines of source code to their creatures. And to their help,
chances are that Torben Hohn already has all the starters ready (ask
torbenh on #jack @ irc.freenode.net; maybe he still has some fresh git
repo/patch on the fridge:). Then again, this very announcement is being
kind of a heads-up. Avast ye LADs!

Anyway, there are a few new tricks this old dog have been taught,
besides putting the carriage before the horses, nevertheless... :)

    QjackCtl 0.3.7 has been released!

That's it. Well, the uber-procrastinator sometimes gets over it.
Sometimes :) Maybe there's a fine distinction between elegant
procrastination and being just lazy. Tradition still rules: lazy enough
to procrastinate no more :)


Project page:

- source tarball:
- source package (openSUSE 11.3):

- binary packages (openSUSE 11.3):



Weblog (upstream support):

  QjackCtl is free, open-source software, distributed under the terms of
the GNU General Public License (GPL) version 2 or later.

- Session widget has session save type preserved as well.
- Connections and the new Messages/Status widgets now have their last
open tab preserved across program run-cycles.
- Connections and Patchbay widgets have been finally given up on an old
feature request: an Expand All items button.
- A significant UI layout has been made: the Messages and Status widgets
were merged into one, giving space to the brand new Session wigdet to be
easy accessible from the main panel control window.
- libX11 is now being added explicitly to the build link phase, as seen
necessary on some bleeding-edge distros eg. Fedora 13, Debian 6.
(closing bug #3050915).
- Input/Output latency options were missing but now finally enabled for
the firewire back-end.
- General standard dialog buttons layout is now in place.
- Avoid pre-loading a stalled patchbay definition filename and its
nagging error on startup (fixes bug #3017078).
- Client connection retrial logic scrapped. Being a leftover from early
ages, when machines were slower and JACK server startup times were
longer... now, if it can't connect first time as client, it will tear
down the server whether it's starting up still or not at all. (cf.
Setup/Settings/Start Delay for the rescue).
- Server name is finally part of the server settings presets, thanks to
Fons Adriaensen for the heads-up.
- As a workaround regarding issues switching jack2's backends, Robin
Gareus sends us yet another D-Bus metho slot: "preset", (dbus-send
--system / org.rncbc.qjackctl.preset string:PRESET). Thanks again.
- Another D-Bus interface slot makes it through implementation: "quit"
(eg. usage: dbus-send --system / org.rncbc.qjackctl.quit). Besides,
there's also these new JACK session management actions which were being
overlooked as well: "load", "save", "savequit" and "savetemplate" are
also available as D-Bus method slots.
- Make sure that Patchbay socket names are unique when adding or
copying, fixing previous patch by Dominic Sacré.
- JACK version is now being shown on the About box (jack2).
- Slight Connections widget behavioral change: (dis)connecting a client
(from) to one single port, (dis)connections will be applied in sequence
from (to) all client output ports to (from) as many input ports there
are in below, one by one (satisfying a 5 year old request from Yann
Orlarey, thanks:).
- JACK session support is being introduced.
- Ignore first XRUN occurrence option dropped from statistics.
- Initial widget geometry and visibility persistence logic has been
slightly revised as much to avoid crash failures due to wrong main
widget hidden state.
- Double-quotes are now being added to device names which include blank
characters and were rendering invalid all command line invocation of the
classic JACK server (eg. specially due for Portaudio device names on
- Transport play (rolling) status is now being guarded to avoid
backfiring from extraneous transport state changes.
- General source tree layout and build configuration change.
- Italian (it) translation added (by Sergio Atzori).
- Post-shutdown script invocation logic slightly refactored in attempt
to enforce its execution on application quit.

rncbc aka Rui Nuno Capela
rncbc at rncbc.org

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