Here's some more information. Installing xserver-xgl is not a permanent solution. The window decorations disappear after switching users multiple times. Running gnome-compiz-preferences seems to restore them, but this is annoying.
Here's some more information. Installing xserver-xgl is not a permanent solution. The window decorations disappear after switching users multiple times. Running gnome-compiz- preferences seems to restore them, but this is annoying.