Recently I started to experience unresponsive global shortcuts after resuming from sleep.
In particular I use F12 to show/hide yakuake and Meta to show/hide krunner (this one is configured in kwinrc).
After resuming from sleep, if I press one of these buttons the effect is triggered after some time, e.g. 30 seconds. An application like yakuake is responsive, indeed I can open it by clicking on its icon. Sometimes the shortcut is processed after I opened the application with the mouse and so the shortcut hides yakuake.
What should I look for to trying debugging this? (I experience this in two different notebooks).