[Bug 1546328] Re: Systray option does not work.

[Len Ovens]

@Dmitry, @Ross: I do remember qjackctl from before only allowing
singltons :) one could close qjackctl to the systray and start it again
from the menu with the result of two qjackctls. That while annoying, is
not a real problem provided the user is using jackdbus as it is ok to
have more than one application controlling jackdbus. There may be issues
if dbus is turned off as jackd then becomes a child process of the
qjackctl instance that started it. Another qjackctl can not stop it and
quitting the excess qjackctl that does happen to have jackd as child of
course stops jackd. This could be confusing, but unless jack is
currently in use (recording?) not life shattering. Trying to close the
qjackctl with the jackd child will create an exit/cancel dialog to warn
the user jack will be stopped. The second qjackctl can still make
connections of jack clients.

With the qt4 version, starting qjackctl from the menu will make the
already running instance visible rather than start a new one.

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https://bugs.launchpad.net/bugs/1546328

Title:
  Systray option does not work.

Status in Ubuntu Studio:
  New
Status in qjackctl package in Ubuntu:
  Confirmed
Status in qtbase-opensource-src package in Ubuntu:
  Invalid

Bug description:
  Setting Qjackctl to "Enable system tray icon" does not display
  Qjackctl's icon and the menu provided by qjackctl from systray is
  blank. Further setting Qjackctl to "Start minimized to system tray"
  makes the application unusable.

  A reboot after Qjackctl to "Enable system tray icon" and  "Start
  minimized to system tray" are set, starting Qjackctl not only doesn't
  show Qjackctl's icon, but the mouse stops working correctly:

  The mouse moves ok, but does not have any hover effect or clicks so
  the menu no longer works and the only way to kill qjackctl is with
  control-alt-F1 (which does still work).

  Qjackctl is the main application used for controlling Jackd or
  jackdbus for those using any of the pro audio software.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: qjackctl 0.4.1-1ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-4.19-lowlatency 4.4.1
  Uname: Linux 4.4.0-4-lowlatency x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Tue Feb 16 14:30:46 2016
  InstallationDate: Installed on 2015-11-19 (89 days ago)
  InstallationMedia: Ubuntu-Studio 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151118)
  SourcePackage: qjackctl
  UpgradeStatus: No upgrade log present (probably fresh install)

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