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New OS X MacBook Software for Targus Universal Docking Stations

Mac OS XThe DocKtor is recommending the DisplayLink Release 2.5 software for OS X 10.8.5 or later.  The software can be downloaded from support and product pages, i.e. here.  Let us know if you need Targus UDS software for earlier versions of OS X down to 10.6.

This software release contains an embedded firmware image.  The upgrade is silent, therefore screens may require a few seconds to appear for the first time.

Bugs fixed in this release:

Occasional high CPU usage after a lock/sleep/wakeup cycle. (18765)

Ethernet entry added for some devices without Ethernet capability. (20725)

Sometimes one screen may not be recognized for DL-3950 and DL-5910 products. Re-plug to recover. (20773)

Sometimes a screen is not disabled when the device is unplugged and remain blank when connected again. Reboot to recover. (20904)

Occasionally on El Capitan, DisplayLink screens not updating after a reboot. (20583)

DisplayLink USB3 adapter devices may fail to enumerate successfully after upgrading to 2.5 beta 1. (20750)

A DisplayLink screen may not be available when using two DisplayLink devices. (20677, 20681)

El Capitan compatibility

– Device sometimes not enumerated at startup or re-plug. (19967)

– Screen can be randomly black at connection, resuming from sleep or after layout changes. (19931)

On latest 10.9/10.10/10.11 non-DisplayLink USB Ethernet adapters sometimes not recognized. (20547)

OS X limitations

Clamshell mode (built-in screen off while the lid is closed) requires a monitor to be connected to the Mac’s built-in video output even if other DisplayLink screens are available.

The internal screen is kept active while in clamshell mode on OSX systems with a single HD3000 graphics card.

iTunes protected content is not visible on built-in graphics when DisplayLink screens are connected. (17087)

No 3D (OpenGL) acceleration – some features of Mac OS X applications that require hardware OpenGL acceleration, such as Keynote presentations or iMovie projects, will have limited functionality.

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.

OS X 10.9 Mavericks and Later

Since Mavericks 10.9, OS X does not fully support virtual framebuffers. This includes third party USB and wireless displays. The DisplayLink drivers work around some issues but other issues are still visible as detailed below.

Forced user logout in full screen transitions, for example Show Desktop or Mission Control. (19924) This issue has been resolved in 10.11 El Capitan.

Logout caused by the Window Server crashing while minimizing applications or changing monitor settings. (18862, 19060)

All screens black and unusable after unplugging a DisplayLink screen. This is caused by Apple’s Window server crashing. This can be recovered by re-plugging the DisplayLink device. (16155)

Since Yosemite some Carbon applications can show corruption around the edges of windows. (18064)

Misplaced or missing menu items on the DisplayLink screen. Changing the resolution of the external screen can sometimes resolve the issue. (16480, 16744)

On some systems fast user switching fails when DisplayLink screens are connected. (16153)

Sometimes when DisplayLink monitor is set as primary after waking up from sleep it is disconnected and there is no login screen visible. (16149)

Corruption on the screen may be visible while rotating DisplayLink displays. (16151)

On 10.9.x only, Safari crashes when playing video on a DisplayLink screen. (21097)

Since OS X 10.9.3, the desktop contextual menu is sometimes not available on DisplayLink screens. (17086) To avoid this issue:

– Disable “Display have different spaces” option

– In case “Display have different spaces” is active, temporarily move the dock to the extended screen at least once after connecting the DisplayLink screens

Some applications can show corruption and/or missing contents while updating windows contents. Examples are Maps, iBooks, FaceTime, the Dock and the menu bar. (16365, 15855, 15778, 17092, 19068)

Some applications show corruption and/or wrong colors on specific UI elements. This is due to new transparent rendering in Mac OS 10.10 and later.  To work around this issue, open System Preferences->Accessibility and enable the “Reduce transparency” option.

Common recovery steps

Most of the issues can be resolved by re-plugging the Universal Docking Station.  In rare cases, the recovery requires rebooting.

Known issues and limitations

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

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

Changing the monitor connected to a DL-1×0/DL-1×5 DisplayLink device may require the device to be unplugged and re-plugged for the new monitor to be correctly recognized.

Two DisplayLink monitors mirroring each other may sometimes cause corruption on main Mac’s screen. (15633)

Screen corruption while mirroring multiple DisplayLink screens. (16121, 17077)

Desktop & Screensaver window is sometimes crashing when DisplayLink monitor is set as a primary display. (16122)

On some systems, unable to login after restarting while in mirror mode. (17095)

Color calibration does not work with DisplayLink enabled displays.


A full copy of the Release Notes is available here.


Categories: Mac

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