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Suddenly, my xfce4 desktop manager is behaving very weird: the frame around windows for moving or closing them are missing, I cannot switch between windows or bring windows in the background by clicking on a different window.

This would be the behavior with no desktop manager running, right?

But echo $DESKTOP_SESSION says xfce and ps ax | grep xfce says:

 1755 ?        Ss     0:00 /bin/sh /etc/xdg/xfce4/xinitrc -- /etc/X11/xinit/xserverrc  
 1794 ?        Ss     0:00 /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session /usr/bin/startxfce4  
 1797 ?   S      0:00 /usr/bin/dbus-launch --exit-with-session /usr/bin/startxfce4  
 1806 ?        S      0:00 /usr/lib/xfce4/xfconf/xfconfd  1814 ?        Sl     0:00 xfce4-session 
 1827 ?        Sl     0:00 xfce4-panel --display :0.0 --sm-client-id 27b5d67b9-b659-4133-8e86-12fee0e6b5a4  
 1837 ?        S      0:00 xfce4-settings-helper --display :0.0 --sm-client-id 2764eefc4-8568-487f-87e9-94ca8fc1c661  
 1903 ?        Sl     0:00 xfce4-mixer  
 1906 ?        Ssl    0:00 xfce4-volumed  2068 ?        S  0:00 /usr/lib/xfce4/panel/wrapper /usr/lib/xfce4/panel/plugins/libsystray.so 6 18874424 systray Notification Area Area where notification icons appear   
 2070 ?        Sl     0:00 /usr/lib/xfce4-mixer/xfce4/panel-plugins/xfce4-mixer-plugin  15 18874425 xfce4-mixer-plugin Mixer Volume control for your sound card   
 2071 ?        S      0:01 /usr/lib/orage/xfce4/panel-plugins/xfce4-orageclock-plugin  5 18874426 xfce4-orageclock-plugin Orage Panel Clock Show time and date?

So are all processes that xfce4 requires running? Is it just not configures correctly? In short: What might cause this behavior, and how can I fix this?

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Found the answer at ubuntuforums.org/showthread.php?t=1765417: xfwm4 --replace did the trick :) –  user17822 Oct 23 '12 at 14:39

1 Answer 1

up vote 1 down vote accepted

This is a well-known bug in Xfce 4.10 and it happens when for some reason xfwm4 exits and isn't being automatically restarted. When this happens, use alt+f2 or just open a terminal window, focus it (i.e. hover the mouse on top of it) and execute xfwm4 --replace. This should bring back WM buttons (close, min, etc.).

See also:

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