- You can create a keyboard shortcut using any of the F1-F12 keys (with no modifiers as such CTRL or ALT) via the GUI (System => Preferences => Keyboard Shortcuts), but if you use the F1-F12 keys for any Custom Shortcut, it does not do anything. But custom shortcuts work if used with a modifier, for example CTRL-F2.
ctrl-alt-lisn't working to lock the screen.
- Red Hat Enterprise Linux (RHEL) 6.2
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