I have a question regarding the SLiM login screen. I have the problem that on startup my SLiM login manager is on both screens. It is quite annoying that the configuration is off and I cannot find how to change the settings, that for instance the login panel is on one screen.
The solution involves editing /usr/share/slim/themes/default/slim.theme
and adjusting the values of input_panel_x and background_style
From within a running destop session (already logged in) you can use a terminal emulator to launch
slim -p /usr/share/slim/themes/default/slim.theme
to immediately preview the result after editing/tweaking the themefile