F10 doesn't start keyboard navigation to the panel

Bug Description

STEPS TO REPRODUCE:

1. Press F10
2. Try to navigate on the panel

EXPECTED OUTCOME:

First menu on the panel is open, and then you can navigate for the rest of the panel. This is one of the official shortcuts. You can find it in different places of the net:
http://www.ubuntugeek.com/list-of-ubuntu-unity-keyboard-shortcuts.html
http://www.techdrivein.com/2011/04/31-useful-ubuntu-1104-unity.html

ACTUAL OUTCOME:
Nothing happens.

ADDITIONAL INFORMATION:

I will tag this as a11y, although this is a general bug, as anyone could find useful to navigate by the panel using the keyboard, and panel keynav doesn't depend on the a11y (ATK) support.

While not a regression for unity-2d so far as I am aware, using F10 to access the unity-2d panel is also not possible.

Investigated this, compiz was not giving Unity the key-up event for F10 and Jason was going to dive further to figure out why.

Found out that keeping F10 pressed pops up the menu :/

fixed by http://bazaar.launchpad.net/~unity-team/unity/trunk/revision/1550

This bug was fixed in the package unity - 4.16.0-0ubuntu1

---------------
unity (4.16.0-0ubuntu1) oneiric; urgency=low

* New upstream release.
- compiz crashed with SIGSEGV in nux::GpuDevice::GetGpuInfo()
(LP: #765375)
- F10 doesn't start keyboard navigation to the panel (LP: #839628)
- Change on the at-spi accessibility-toolkit can affect also Unity
(LP: #844927)
- compiz crashed with SIGSEGV when a lens is shutting down (LP: #848675)
- [UIFe] Radiance panel icons are unreadable and ugly when panel goes
transparent with Dash (LP: #828862)
- window switcher stuck (not only, but can be triggered with Onboard)
(LP: #832033)
- Window titlebar is click through after raising a minimized window
(LP: #840285)
- Alt+Shift+` does not work in symmetry with Alt+` (LP: #843250)
- UIFe: Alt-Tab: Update layout behavior to make previews larger and
outline active preview (LP: #847944)
- windows clipped on resize (LP: #848962)
- Alt-tab - Add orange border to selected window in alt-tab window spread
(LP: #838114)
- Launcher - the direction the Launcher is scrolled with the mouse wheel
is inverted (LP: #839703)
- Launcher - the rendering of the BFB and Lens squircle does not match the
design (LP: #838708)
- Alt-Tab - In the app window spread, all windows should have the same
height, only the width should vary (LP: #838110)
- Launcher - the background of the Launcher should be tinted using the
average colour of the wallpaper (LP: #850068)
- Alt-tab - It is currently very difficult to see pips in the left of the
app icon for the currently selected app (LP: #838134)
- Launcher - Auto scroll missing from the top of the Launcher
(LP: #838744)
- Scope searches blocks the lens (LP: #850816)
- Shortcuts SUPER+1...9 doesn’t work until opening a window (LP: #768076)
- Dash closes prematurely when dragging apps into the launcher
(LP: #773892)
- Dash - As soon as a user starts dragging a .png file from the Dash, the
file icon turns into a grey question mark (LP: #764447)
- Dash shows an empty icon for some applications. (LP: #830887)
- Windows are click through after restore from minimize (LP: #834034)
- Dash - No keyboard shortcuts for switching lenses (LP: #842086)
- Dash search for files states "two more results" but doesn't display them
(LP: #840005)
- <meta>+<shift>+<launcher #> to start a new instance of a program doesn't
work anymore (LP: #842977)
- Alt-tab - Cross interactions between Alt-tab and Dash are broken
(LP: #844021)
- UIFe: Dash - Shape and positioning of most of the elements in the Dash
need adjustment (Part 2) (LP: #844889)
- Alt-Tab - make pause to spread default alt-tab behaviour. Upgrade
existing installs as well. (LP: #838075)
- Do not install unity-preference (LP: #847599)
- Update unity --distro to latest plugins installed (LP: #847799)
- off by one error in count of additional results in a category
(LP: #848218)
- UIFe - Launcher - The background of the BFB, Workspace Switcher, Lens,
...

I did a trivial hard-code binding fix for this issue in https://code.launchpad.net/~sil2100/unity-2d/trunk.lp839628 - but as Saviq noticed, this might not quite be the solution we are looking for. It's now a question who ultimately should be the one to pick up the F10 handling - the application, or unity? My fix makes unity-2d-panel be the one in control.

This bug was fixed in the package unity-2d - 4.12.0-0ubuntu1

---------------
unity-2d (4.12.0-0ubuntu1) oneiric; urgency=low

* New upstream release
- unity-2d-panel assert failure: *** glibc detected *** unity-2d-panel:
malloc(): smallbin double linked list corrupted: 0x08313b28 ***
(LP: #845979)
- unity-2d-panel assert failure: *** glibc detected *** unity-2d-panel:
corrupted double-linked list: 0x094bc9b0 *** (LP: #852012)
- unity-2d-panel crashed with SIGSEGV (LP: #843432)
- Dragging downwards from the menu bar or double clicking on the menu bar
should un-maximise the window (LP: #661049)
- [dash] Dash is shown when pressing and releasing quickly super+KEY
(LP: #801073)
- [dash] Do search, scroll down using mouse, then maximise window. Layout
breaks (LP: #817421)
- F10 doesn't start keyboard navigation to the panel (LP: #839628)
- [dash] Gridview moves to top when you open or close the "Show X more.."
dropdown or the Filter pane (LP: #850036)
- Impossible to navigate between panel menus when the mouse cursor is over
the panel (LP: #834065)
- [panel] F10 menu initially shown about half screen down (LP: #853766)
- [dash] Filter pane doesn't clear its background when switching lenses
(LP: #858590)
- [shortcuts] <Super><Shift># should launch a new instance of #
application (LP: #768006)
- unity-2d-spread missing background images when path includes Unicode
(LP: #855508)
-- Didier Roche <email address hidden> 2011年9月29日 16:58:34 +0200