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+title: displayset
+linktitle: displayset
+parent: projects
+ctime: 2013-01-17
+mtime: 2013-01-17
+
+Repositories: [displayset](/gitweb/?p=displayset.git;a=summary).
+
+# Status
+
+[displayset](/gitweb/?p=displayset.git;a=summary) is being used on one computer,
+but it seems to work fine.
+
+# Notebook dock and undock
+
+[displayset](/gitweb/?p=displayset.git;a=summary) is designed to solve a
+particular problem on the author's work laptop, a Lenovo Thinkpad X201:
+
+* The X201 docks via a media slice to which two 4:3 1600x1200 LCD monitors
+  are connected.
+* Xubuntu 12.04 does not automatically shift display configuration on dock
+  and undock events.  Ubuntu 11.10 running Gnome classic shell almost did it
+  right...
+* The laptop has a 12 inch widescreen with 1280x800 resolution, so when using
+  the LCD panel, maximizing non-dialog windows and dispensing with their title
+  bars offers better usability and more effective use of screen real estate.
+* When docked and using the dual external displays, the traditional windows
+  manager behavior is more appropriate.
+
+# How it works (with XFCE)
+
+The [displayset](/gitweb/?p=displayset.git;a=summary) script is called from
+keyboard shortcuts, which are added under the Settings Manager.  I use
+`<super>l` (lowercase L) to switch to the LCD panel and `<super>d` to switch to
+the dual external monitors.  Each key combination calls the displayset utility,
+with a different argument in each case:
+
+* For LCD panel: `displayset lcd`
+* For dual external monitors: `displayset dualext`
+
+# Installation
+
+[displayset](/gitweb/?p=displayset.git;a=summary) requires xrandr, wmctrl and
+maximus installed.  For Xubuntu 12.04, the following command will do the job,
+although the `x11-xserver-utils` package is probably already installed.
+
+    sudo apt-get install x11-xserver-utils wmctrl maximus
+
+To install [displayset](/gitweb/?p=displayset.git;a=summary), simply copy the
+script to /usr/local/bin, or somewhere else in the path, and make it executable.
+This would do:
+
+    sudo cp displayset /usr/local/bin/
+    sudo chmod 0755 /usr/local/bin/displayset
+
+To map the keys to call displayset, run the XFCE Settings Manager, click on
+the Keyboard icon, then select the Application Shortcuts tab.
+
+# How to use
+
+## To undock
+
+There are a lot of variations on this use case.  Typically when I undock, the
+notebook is currently active and I want it to be suspended after undock.
+
+* Physically undock the notebook.  For the media slice, this means pressing the
+  undock button, waiting for the red triangle to go green, then using the lever
+  to release the notebook from the slice.
+* Open and close the lid to signal a suspend event to the notebook.
+* Later, when the lid is opened to wake the notebook,
+* Type in the screensaver password (if enabled).  The display will not be active
+  at this time.
+* Press `<super>l` to switch the display to the LCD panel.
+
+## To dock
+
+There are variations to this use case as well, but generally this author finds
+the notebook last using the LCD panel and suspended when docking.  Therefore:
+
+* Physically dock the notebook into the media slice.
+* Wake the notebook from suspend by pressing the power button on the front of
+  the slice.  Wait a few seconds for the notebook to unsuspend.
+* Type in the screensaver password (if enabled).  The display will not be active
+  at this time.
+* Press `<super>d` to switch the dual external monitors.
+
+More information can be gleaned directly from the
+[displayset](/gitweb?p=displayset.git;a=blob;f=displayset;hb=HEAD) script.