Disable global Ctrl-Alt-L hotkey in KDE

The IntelliJ IDEA short-cut to reformat source code is Ctrl+Alt+L. This happens to lock the screen in KDE (Gnome too?). How can I disable this so IntelliJ receives the key sequence?

Under the K menu, go to the Control Center.

Regional & Accessibility | Keyboard Shortcuts | Shortcut Schemes tab, Global Shortcuts tab.

In the search box, type "lock", which should narrow the visible shortcuts and show the Ctrl+Alt+L one ("Lock Session").

Underneath, click None.

Click the Apply button.

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On KDE Plasma 5 go to System Settings | Desktop Behaviour | Screen Locking

Here you will find a "Keyboard Shortcut" option. Change it to something else or set to none

On Kubuntu 11.10 it's well hidden:

1. Start System Settings
2. Under Common Appearance and Behavior, select Shortcuts and Gestures.
3. Select Global Keyboard Shortcuts in the left-hand panel.
4. Select the KDE Component: Run Command Interface (important, otherwise you won't see the ctrl-alt-L mapping!)
5. Select Lock Session
6. Edit the setting, either choose a different mapping or 'none'.

I eventually found how to disable the lock screen key binding (Ctrl-Alt-L) in the System Setting app.

System Settings->"Keyboard Mouse->Keyboard Shortcuts

I had to choose the KDE component: Run Command Interface.

I'm running KDE on Fedora Core 9.

For Linux Mint: System Settings -> Keyboard -> Keyboard Shortcuts -> System -> Lock screen

It's easy to disable all global keyboard shortcuts in KDE for specific applications. I've done it in KDE 4 and now I've done it in KDE 5 again. So in KDE 5 right click on your application's window title -> More actions -> Special Window Settings (or Special Application Settings) -> Appearance & Fixes -> Ignore Global Shortcuts -> Force, Yes. It's much easier than to look for each shortcut one by one.

You can check such configurations in System Settings -> Window Management -> Window Rules.

Instead of disabling anything, you can also use ctrl+meta+alt+l in most applications where this problem exists. KDE knows the meta key (aka the 'windows key'), but the applications seem to ignore it and consider it to be just ctrl+alt+l.

I know, old question, but I didn't easily find a decent answer. If anybody is wondering how to disable it on Ubuntu (while the Windows_key + L shortcut will still work):

Go to Settings -> Keyboard -> Shortcuts tab -> System -> select Lock screen and press backspace to clear it.

For KDE Plasma 5

1 - click on K menu, type keyboard, choose Global Keyboard shortcuts

2 - Choose the KDE Session Manager in KDE component , at Lock Session, do what you want, disable the shortcut or choose another!

For Ubuntu 16.04 System settings -> Keyboard -> Shortcut -> System -> LockScreen -> click-it and make changes

I changed my to ctrl+alt+H from ctrl+atl+L

Here is the Screen shot which tells where the above instructions will lead you to. Keyboard -> shortcuts

Another option is to change the Idea keymap to use Default for KDE. You can go to File -> settings -> keymap and then select the Default for KDE option from the drop down

Also you can change it with the configuration file.

The following files store the keyboard shortcuts of KDE Plasma 5 and of some of its associated applications such as Konsole and KWrite.

~/.config/kdeglobals
~/.config/kglobalshortcutsrc
~/.config/khotkeysrc
~/.config/kwinrc
~/.config/plasma-org.kde.plasma.desktop-appletsrc
~/.local/share/kxmlgui5/katepart/katepart5ui.rc
~/.local/share/kxmlgui5/konsole/konsoleui.rc
~/.local/share/kxmlgui5/konsole/sessionui.rc
~/.local/share/kxmlgui5/kwrite/kwriteui.rc

Let me add descriptions for the files.

Standard Shortcuts (System Settings > Shortcuts) ~/.config/kdeglobals

Global Shortcuts (System Settings > Shortcuts) ~/.config/kglobalshortcutsrc

"Custom Shortcuts" (System Settings > Shortcuts) ~/.config/khotkeysrc

Konsole ~/.local/share/kxmlgui5/konsole/konsoleui.rc ~/.local/share/kxmlgui5/konsole/sessionui.rc

KWrite > Settings > Configure Shortcuts... > KWrite ~/.local/share/kxmlgui5/kwrite/kwriteui.rc

KWrite > Settings > Configure Shortcuts... > Kate Part ~/.local/share/kxmlgui5/katepart/katepart5ui.rc

For those who prefer visual answers, here's where this settings can be found

IMPORTANT Note that there are two values: Global and Global Alternative. I had to unbind the Global Alternative shortcut to resolve a problem with IntelliJ.