[panel] application menu not visible (on natty)

[Felix Yan]

no appmenu-applet shown, when I moved my mouse over the title text on the unity-2d panel, there's nothing happened.
no indicator-applet-appmenu process running either.
what's the problem?

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity-2d-panel 3.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-12.26~ppa3-lowlatency 2.6.37
Uname: Linux 2.6.37-12-lowlatency x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Jan 22 12:26:15 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
SourcePackage: unity-2d

[Johan Kiviniemi (ion)]

panel/applets/indicator/indicator.c:380:

  const gchar *indicator_names[] = { "application", "messaging", "soundmenu", "datetime", "me", "session", 0 };

Perhaps that’s the problem.

[Johan Kiviniemi (ion)]

If I add appmenu to that array, unity-2d-panel crashes with the message “Indicator-Appmenu-ERROR **: Unable to claim the name com.canonical.AppMenu.Registrar”.

[Florian Boucault (fboucault)]

@Johan: as discussed over IRC, the appmenu should appear already without code change or addition to the indicators list. The bug is somewhere else.

[Aurélien Gâteau (agateau)]

Some information about the bug:
- It works for Qt applications
- First problem is that at least for me, the UBUNTU_MENUPROXY environment variable is not set, preventing the appmenu-gtk gtk module from being loaded
- Second problem is that, once the variable is set, it still does not work. I suspect this is because the new GVariant-based libdbusmenu-gtk (which is used by appmenu-gtk) is broken: it does not correctly implement the GetChildren() method.

Still investigating...

[Aurélien Gâteau (agateau)]

It turns out the UBUNTU_MENU proxy problem only occurs when using kdm, so it's probably a separate issue.

[Felix Yan (felixonmars)]

The bug occurs even if I use gdm as well as kdm; as gnome-keyring and many many others not working well in kdm, I have to switch back to gdm.

[Felix Yan (felixonmars)]

After upgrading appmenu-gtk to 0.1.91-0ubuntu1 today, appmenu for gtk now works properly on unity-2d, but QT appmenus now shows in the application window not applying global-menu settings.

[Johan Kiviniemi (ion)]

Something fixed (Gtk) appmenus for me, too. Among the upgraded packages were indicator-appmenu, appmenu-gtk and unity-2d-panel.

Keyboard shortcuts such as F10 and alt-f don’t do anything, though, and the menu items don’t have anything underlined. But that’s a separate bug.

[Felix Yan (felixonmars)]

But if switched to unity 3d and then switched back, the appmenu will not work any more. Repeated such operations and got same results.

[Florian Boucault (fboucault)]

I can confirm Felix's observation:

"[...] QT appmenus now shows in the application window not applying global-menu settings."

[Aurélien Gâteau (agateau)]

Bug was in libdbusmenu-gtk. It is fixed in libdbusmenu-gtk 0.3.94.