Some custom keyboard shortcuts don't function in new sessions

[Chris Morgan]

I have historically had three custom keyboard shortcuts:

gVim: Alt+F12
System Monitor: Shift+Ctrl+Escape
Python: Alt+F6

Since updating from Ubuntu 11.10 to 12.04, while the System Monitor shortcut continues to function, the two Alt+F[n] shortcuts do not function regularly.

All three are apparent in System Settings -> Keyboard -> Shortcuts -> Custom Shortcuts; if I select one of the two dysfunctional shortcuts and either clear it or change it to something else, and then change it back, it begins to work. However, when I log into a fresh session or restart the machine, the shortcut becomes dysfunctional once more.

Additionally, attempted invocation of either of the dysfunctional key combinations in a terminal renders the control sequence, passed through (as ^[[17;3~ or ^[[24;3~). This gives credence to my notion that the shortcuts had not been taken by something else (which would give an excuse for their registration failing).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-control-center 1:3.4.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Mon Apr 30 20:44:40 2012
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to precise on 2012-04-26 (3 days ago)
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu3
 deja-dup 22.0-0ubuntu2
 gnome-bluetooth 3.2.2-0ubuntu5
 indicator-datetime 0.3.94-0ubuntu2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Luca A. Rossi (larossi)]

This bug also affects me. In previous releases of Ubuntu I used to assign Super+Numpad-, Super+Numpad/ and Super+Numpad* respectively to media play, previous and forward.

Now I can assign shortcuts using the "Super" key, but they don't work. If I assign them to something else, for example Alt+Numpad*, they work until I close the session or I restart the system.

[Sylvan Butler (ubu-sylvan)]

I have long had a Super+L shortcut to lock the display.

In 12.04 it works when I first set it, but log out and log in or reboot and it quits working. It is still listed, so I set it to something else then set it back to Super+L and it works again.

My workaround, I have a script set to auto start when I log in. In that script I have this and now my Super+L works when I need it:
# for some reason it seems to forget this binding after a reboot
# https://wiki.ubuntu.com/Keybindings
(
sleep 30
gsettings set org.gnome.settings-daemon.plugins.media-keys screensaver '<Super>l'
) &