It seems there is actually a simple fix for most of these problems.
As far as I can tell the root cause of the problem is as follows:
The appmenu-qt5 package somehow grabs all the menus from all
applications and sends them via D-Bus to the window manager. Of course
this will only work if the window manager is actually listening for
these kind of messages on D-Bus.
The appmenu-qt5 plugin will only do this, if according to the
documentation the environment variable QT_QPA_PLATFORMTHEME is set to
appmenu-qt5.
Now installing the appmenu-qt5 package will put a script under
"/etc/profile.d/appmenu-qt5.sh" and this script is a single liner:
export QT_QPA_PLATFORMTHEME=appmenu-qt5
So the environment variable is UNCONDITIONALLY set. I think this is just plain
wrong, since the assumption that ALL window managers will support this
undocumented D-Bus menu forwarding mechanism is rather weird.
I think the script "/etc/profile.d/appmenu-qt5.sh" should check if Unity is
running and ONLY THEN set the environment variable.
For example something like this:
if [ "$DESKTOP_SESSION" = "ubuntu" ]; then
export QT_QPA_PLATFORMTHEME=appmenu-qt5
fi
Note: I am not an Ubuntu wizard, so I am not sure what the best way is
how to check for Unity in a bash script. I at least think the above
would work...
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1307619
Title:
All Qt5 applications' menu bar is missing at non-Unity DEs after
appmenu-qt5 installed
To manage notifications about this bug go to:
https://bugs.launchpad.net/lyx/+bug/1307619/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
