for detailed the term Unity in Summary section means unityshell
component in unity.
1. BIOS/HW sends Super+P scan code when user press function key in
laptop and then convert to X key event
by kernel and X server to the Compiz.
2. unityshell is a Compiz plugin and defines a lot of action callbacks
for specified keys.
so Compiz will pass the X key event to all plugins for trigger the
key event handling (
PrivateScreen::handleActionEvent ->
PrivateScreen::triggerKeyPressBindings in $compiz_src/src/event.cpp)
3. if the keycode and modifier defines in the Action is as the same as
the keycode and modifier in X event, the Action callback will be
executed, then Compiz thinks this X event is handled. for example,
action callback for Super key is to show Unity Launcher.
4. if Compiz thinks this X event is handled it will stop to handling X
event if private screen does not grab any devices. if this X event is
not handled , Compiz then thinks it maight be Focus-In, Focus-Out, etc,
and continue trigger the related handling function.
so far, there is an question comes up in my mind, why the action callback of
Super key which is defined in unitshell
will be triggered when user press Super+p and this symptom should not be
happened. (the return value is True of PrivateScreen::triggerKeyPressBindings
or PrivateScreen::triggerKeyReleaseBindings in $compiz_src/event.cpp)
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-settings-daemon in Ubuntu.
https://bugs.launchpad.net/bugs/950160
Title:
Unity blocks other programs from binding globally to Super+* or Alt+*
(* = any key)
Status in Gnome Settings Daemon:
Fix Released
Status in OEM Priority Project:
Confirmed
Status in OEM Priority Project precise series:
Confirmed
Status in Unity:
Confirmed
Status in “compiz” package in Ubuntu:
Confirmed
Status in “gnome-settings-daemon” package in Ubuntu:
Fix Committed
Status in “unity” package in Ubuntu:
Confirmed
Status in “compiz” source package in Precise:
Confirmed
Status in “gnome-settings-daemon” source package in Precise:
Fix Committed
Status in “unity” source package in Precise:
Confirmed
Status in “compiz” source package in Quantal:
Confirmed
Status in “gnome-settings-daemon” source package in Quantal:
Fix Committed
Status in “unity” source package in Quantal:
Confirmed
Bug description:
WORKAROUND 1:
Run CCSM and under "Ubuntu Unity Plugin" change the key binding for "Key to
show the launcher" to something else (e.g. Super+U). Then log out and in again.
As long as no compiz plugin is bound to the single Super key any more, compiz
will no longer block other apps from binding to Super+other_keys.
WORKAROUND 2:
1. Write a script or figure out the command to do the action you want.
2. Run ccsm.
3. Enable the "Commands" plugin
4. In the Commands settings, fill in the command line you want and bind it to
key Super+P.
Now Unity will run your specified command on Super+P, but still handle the
Super key as usual.
[Precise SRU Justification]
[Impact] Any shortcut with Super, Hyper, Meta virtual modifiers does
not work
[Test Case] Attach an external monitor to the laptop, press Super+P,
it should do the video switch as this function is implemented in
gnome-settings-daemon. A patch in comment #12 is now accepted
upstream and a test package with that patch is available in comment
#14. From the test result, the patch at least fixes Unity-2D.
[Regression Potential] The patch is accepted upstream and is also
cherry-picked in the gnome-3-4 branch of g-s-d git tree. g-s-d version
in Precise is 3.4.2. So the risk of regression should be rather low.
[Other] I prepare a debdiff in comment #31 for convenience. I hope the
patch can be in both Quantal and Precise.
ORIGINAL DESCRIPTION:
Using : 12.04 Beta 1, updated. and Unity.
In 11.10 clicking:
- the function key (Fn) + (F1) allowed to switch between the laptop
screen and the external monitor.
After upgrading to 12.04 this no more works and instead I get an
unexpected behavior: see the video.
https://www.youtube.com/watch?v=-vEnrV5TwXo
System: Dell XPS 15 L502X
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubuntu-sso-client 2.99.90-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu1
Architecture: amd64
Date: Thu Mar 8 19:18:42 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: ubuntu-sso-client
UpgradeStatus: Upgraded to precise on 2012-03-02 (6 days ago)
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