Ubuntu
qtbase-opensource-src package

QSystemTrayIcon doesn't work correclty on 16.04 final release

Bug #1574542 reported by Gaurav Sood on 2016-04-25

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	qtbase-opensource-src (Ubuntu)	New	Undecided	Unassigned

Bug Description

I created an gui application which uses 'SystemTrayIcon' to put an icon on systemtray. It works correctly when I build application with qt4 irrespective of ubuntu version.

But same application doesn't work when built with qt5. I tested on Ubunutu 15.10 , 16.04 beta2 and 16.04 final releases.
Surprisingly it works on ubuntu 16.04 beta-1 release. I can see the icon on systemtray.

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Dmitry Shachnev (mitya57) wrote on 2016-04-25:

Thanks for the bug report.

Which desktop do you use? Unity? Do you have appmenu-qt5 package installed?

Can you please run dbus-monitor, then start your application, and paste somewhere the full dbus-monitor log?

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Gaurav Sood (gaurav-sood) wrote on 2016-04-26:

Qt5 systray log Edit (93.0 KiB, text/plain)

I have attached the log file for the qt5 case in which icon doesn't appear.

I do have appmenu-qt5 package installed and i am using unity 7.4.0

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Gaurav Sood (gaurav-sood) wrote on 2016-04-26:

I tried the same application on fedora 23 which have gnome as desktop environment. Its working there.
Something different is happening in unity

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Dmitry Shachnev (mitya57) wrote on 2016-05-12:

Hi Gaurav,

Does your application use the QSystemTrayIcon::isSystemTrayAvailable() method? If yes, then my appmenu-qt5 fix from lp:~mitya57/appmenu-qt5/lp1574699 should fix this bug. If you can build/install appmenu-qt5 from there and test, that would be nice.

As a workaround, start your app with QT_QPA_PLATFORMTHEME=generic, and it should work.