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		DisplayLink Mac OS X Software Release Note

Version: 2.0 (46843)
Date: 22 March 2013
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A. Introduction
===============

This is DisplayLink Mac OS X Software v2.0 Product Release.

This release delivers the following features
  * Support for DL-3x00 devices (Video, Ethernet and stereo audio support)
  * Bug fixes and compatibility improvements for all products
  * Improved performance for all products

A full list of known issues can be found in the "Known Issues" section below.

More information on how to use this software can be found in the Mac OS X User Guide found on the DisplayLink website (http://www.displaylink.com/mac)


A1. Important notes about DL-3x00 Firmware
==========================================

This software release contains an embedded firmware image.
DL-3x00 devices will be automatically upgraded with this firmware upon connection if required.

The upgrade is silent, therefore screens connected to DL-3x00 devices may require few seconds to appear for the first time.


B. Contents
===========
A.  Introduction
A1. Important notes about DL-3x00 Firmware
B.  Contents
C.  Changes in this release
D.  Supported OSes
E.  Supported Mac Platforms
F.  Supported Hardware
G.  Language Support
H.  Limitations
I.  Common recovery steps
J.  List of known issues


C. Changes in this release
==========================

  * Support for DL-3x00 devices (Video, Ethernet and stereo audio support)
  * Performance improvements for USB 2.0 devices
  * Bug fixes and compatibility improvements for all products

D. Supported Operating Systems
==============================

The DisplayLink software can be installed on any Intel-based desktop or laptop Apple Mac computer running client versions of OS X Mountain Lion 10.8.3, Mac OS X Lion 10.7.5, Mac OS X Snow Leopard 10.6.8.

At the time of writing these were the latest available versions of Mac OS X tested against: later OS versions might show compatibility issues.

Mac OS X Mountain Lion versions older than 10.8.3 are not supported.

Mac OS X Leopard 10.5.x and Mac OS X Tiger 10.4.x are not supported by this driver version. Version 1.7.x is the last version to support these operating systems. Visit http://www.displaylink.com/mac to download this driver.


E. Supported Mac platforms
==========================

This software supports all Intel-based Macs.

***It does not support Power-PC based Macs.***


F. Language support
===================

The DisplayLink software installer is only available in English.


G. Supported Hardware
=====================

- DL-3x00 devices are supported.
- DL-1x5 devices are supported.
- DL-1x0 devices are supported.
- Kensington sd400v Office Dock with auto install is not supported.


H. Limitations
==============

OS X audio limitations
----------------------
OS X does not currently support audio in DL-3x00 based devices on USB 3.0. For audio support, please use a USB 2.0 connection.


OS X graphics limitations
-------------------------
No 3D (OpenGL) acceleration - some features of Mac OS X applications that require hardware OpenGL acceleration, such as Keynote presentations, will have limited functionality.

The internal screen is kept active while in clamshell mode on OSX systems with a single HD3000 graphics card.
    
On Mac OS X 10.6.x (Snow Leopard) it's not possible to screen capture the content of DisplayLink screens. This issue has been fixed by Apple in OS X 10.7.0.

Colour calibration does not work with DisplayLink enabled displays.
      
Note: Applications that require Quartz\OpenGL\hardware acceleration support will likely exhibit problems. Some problems can be avoided by making sure the DisplayLink display is not set to be the main display (the display with the menu bar). If an application refuses to launch when a DisplayLink display is present, try to disconnect all the DisplayLink displays, then launch it and then reconnect the displays.


I. Common recovery steps
========================

Most of the issues can be resolved by replugging the DisplayLink device which exhibits the problem.

In very rare cases, the recovery requires rebooting.


J. Known Issues
===============

Audio interface does not work on USB 3.0. This is a known issue in Mountain Lion. (14862)

Not all display modes are available for rotated DisplayLink screens. (13464)

On Mac Books with Retina display internal screens may get corrupted if screens are in mirroring mode. A workaround is to switch to extend. (15168)

HTML5 and Flash content in Safari may flicker. This is a known problem with recent Safari versions, raised with Apple. A workaround is to use a different browser. (14723)

Changing the monitor connected to a DL-1x0/DL-1x5 DisplayLink device may require the device to be unplugged and replugged for the new monitor to be correctly recognised.