		DisplayLink Mac OS X Software Release Note
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DisplayLink Mac OS X Software Release: External Release Note
Version: 1.8a1 (36844)
Date: 1st March 2012
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This is an Alpha release: it has gone through very limited testing and may cause issues including data loss.

Improvements over the DisplayLink Mac OS X Software 1.7 release include:

    * Mac OS X 10.8 (Mountain Lion) experimental support
    * Prototype of new resolution management to fix 10.7.3 and 10.8 rotation issues
    * Bug fixes
    
A full list of fixed and known issues can be found in the "Fixed Issues" and "Known Issues" sections 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)

Contents
========
A. Supported OSes
B. Supported Mac Platforms
C. Language Support
D. Supported Hardware
E. Fixed Issues
F. Known Issues


A. Supported Operating Systems
==============================

The DisplayLink software can be installed on any Intel-based desktop or laptop Apple Mac computer running the following client versions:
- Mac OS X Snow Leopard 10.6.8
- Mac OS X Lion 10.7.3
- Mac OS X Mountain Lion 10.8 build 12A128p

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 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.

B. Supported Mac platforms
==========================

This software supports all Intel-based Macs.

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


C. Language support
===================

The DisplayLink software installer is localised in the following languages:

- English
- French
- German
- Dutch
- Italian
- Spanish
- Portuguese
- Polish
- Hungarian
- Russian
- Traditional Chinese
- Simplified Chinese
- Japanese
- Korean


D. Supported Hardware
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- DL115 / DL125 / DL165 / DL195 devices are supported.
- DL120 / DL160 devices are supported.


E. Fixed Issues
===============

Issues fixed in DisplayLink Mac OS X Software 1.8 Release:

    - The driver now installs and runs on OS X 10.8 (Mountain Lion). Tested with the first developer preview of 10.8, build 12A128p
    - Rotation on 10.7.3+ causing frozen interface with blue screen (13464)

F. Known Issues
===============
This is a DisplayLink driver release that supports 2D acceleration on Mac OS X platforms.
This software has some limitations:

    * Changing the monitor connected to a DisplayLink device requires the device to be unplugged and replugged for the new monitor to be correctly recognised
    
    * Some of the available rotated resolutions in 10.6.x are shown incorrectly. Alternative resolutions can be chosen in the same list.

    * No 3D (OpenGL) acceleration - some features of Mac OS X applications that require hardware OpenGL acceleration, such as Keynote presentations, will not function properly.

    * On Lion (10.7.x) systems with NVIDIA 9400M/9600M GPUs some applications don't render any graphics on DisplayLink screens. To work around this issue turn off "Automatic Graphics Switching". This issue has been fixed by Apple in 10.7.2.

    * On Lion (10.7.x) systems with NVIDIA 9400M/9600M GPUs a dragged item (icon, window) cannot be released. Apple has been informed of this issue. A workaround is available in DisplayLink drivers since version 1.7. The workaround is disabled if the System Preferences->General->Security->Require password after screen saver begins setting is set to "immediately".
    
    * 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 on Mac OS X versions prior to 10.6.2
    
    * The primary screen becomes corrupted or other issues are seen when using the DisplayLink Mac driver on Core i5/i7 systems.
      This issue has been resolved by Apple in Mac OS X 10.6.5.
      
Note: Applications that require Quartz\OpenGL\hardware acceleration support will likely exhibit problems with this version of DisplayLink software. 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.
