multi-head
dual head testing in XFCE
there were 2 test cases i used for dual monitors. these cases are described as follows...
mirroring - this would be for a presentation maybe. having the same image on both the main display, and a secondary display, such as a projector.
spanning - this would be where the desktop is actually extended onto both monitors making one big desktop.
- mirroring the display is quite simple with the included tool from XFCE/Xubuntu located in the menu under "settings" - "monitor settings". this package is LXrandr. http://packages.ubuntu.com/search?keywords=lxrandr
- to enable, and manage dual head spanning, the only tool that worked for me (with a GUI) was arandr.
http://packages.ubuntu.com/search?keywords=arandr
the different displays were easy to find, configure and rotate using the GUI arandr.
arandr and 'monitor settings' in the menu have the same icons.
between these 2 tools, we can cover whatever the end-user needs.
failed packages, and why
grandr failed. i couldnt enable spanning with it, and there were quite a few 'greyed-out' options.