Am Montag, 20. Juli 2015, 11:25:17 schrieb Arthur Marsh: > Hi, I've lost the tops of windows and hence the ability to move them, > and also the ability to switch tasks with alt-tab on my other machine > and wonder where I should go looking to fix this. Read the list. This is already becoming a FAQ. Install kwin-x11 package. Ciao, -- Martin