I have the same problem. All system keyboard shortcuts can be found in the settings but they do not work since I upgrade to ubuntu quantal from precise.
Also, the shortcuts in the settings are very old. For example: ctrl+alt+del instead of alt+print+k (neither works). Furthermore, ubuntu freezes completely if I try to use a system keyboard shortcut (for example alt+F2) and I have to do a "cold boot". The only shortcuts that work are those I set manually myself - for example to open synapse. The kernel is 3.5.0-17-generic and I use the gnome-shell (no ppa). If there is any information I can provide to help to fix this bug please let me know! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1063822 Title: Ctrl+Alt+L and Ctrl+Alt+Del have no effect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1063822/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs