============================================================================= ============================================================================= DisplayLink macOS Software Release Note Version: 4.0.0 (85514) Date: 19th September 2017 DisplayLink DL-3xx0 / DL-5xx0 Firmware Version: 9.3.55.88162 DisplayLink DL-41xx Firmware Version: 9.3.55.88161 DisplayLink DL-6xxx Firmware Version: 9.3.55.88162 ============================================================================= ============================================================================= A. Introduction =============== This is DisplayLink macOS Software v4.0.0. This release delivers the following improvements * Compatibility with macOS High Sierra 10.13 * Hardware acceleration on macOS 10.13 (on Metal compatible systems) * Increased video performance on macOS 10.13 (on Metal compatible systems) * Bug fixes This version does not support OS X version 10.10.x and earlier. See section D for details. A full list of known issues can be found in the "Known issues and limitations" section below. More information on how to use this software can be found on the DisplayLink website (http://www.displaylink.com/mac) A1. Important notes about DL Firmware ===================================== This software release contains an embedded firmware image. DL-5xxx, DL-3xxx, DL-41xx and DL-6xxx devices will be automatically upgraded with this firmware upon connection if required. The upgrade is silent, therefore screens connected to these devices for the first time may require a few seconds to appear. B. Contents =========== A. Introduction A1. Important notes about DL6xxx, DL-5xxx, DL-3xxx and DL-41xx Firmware B. Contents C. Bugs fixed in this release D. Supported Operating Systems E. Language Support F. Supported Hardware G. macOS limitations H. Common recovery steps I. Known issues and limitations C. Bugs fixed in this release ============================= * Unreliable blanking after screen reconfiguration on some systems. (25452) * In High Sierra, all DisplayLink screens blank after logging out the user. (25813) * In High Sierra, sometimes SW not loaded after being enabled in Security & Privacy. (25772) A large number of macOS limitations have been resolved in macOS High Sierra for systems supporting Metal For the updated list of limitations please check section G. D. Supported Operating Systems ============================== The DisplayLink software can be installed on any desktop or laptop Apple Mac computer running client versions: - macOS Sierra 10.13 GM - macOS Sierra 10.12.6 - OS X El Capitan 10.11.6 At the time of writing these were the latest available versions of macOS tested against: later OS versions might show compatibility issues. OS X versions earlier than 10.11.6 are not supported. Earlier versions of the DisplayLink software can be used but may not be fully functional with all DisplayLink devices: - Version 3.1 is the last version to support OS X Yosemite 10.10.x. - Version 2.6 is the last version to support OS X Mountain Lion 10.8.x and OS X Mavericks 10.9.x. - Version 2.2 is the last version to support Mac OS Lion 10.7.x. and Mac OS X Snow Leopard 10.6.x. - Version 1.7.x is the last version to support Mac OS X Leopard 10.5.x and Mac OS X Tiger 10.4.x. Visit http://www.displaylink.com/mac to download older drivers versions. E. Language support =================== The DisplayLink software installer is only available in English. F. Supported Hardware ===================== Device families supported: - DL-6xxx - DL-5xxx - DL-41xx - DL-3xxx - DL-1x5 - DL-1x0 Kensington sd400v Office Dock with auto install is not supported. G. macOS limitations ==================== General 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. DisplayLink screens are not available at the first login screen when FileVault is enabled. (21278) Protected content from iTunes and other players is not visible on built-in graphics when DisplayLink screens are connected. (17087) The list of available resolutions and the default resolution for 4K displays depends on the type of connection (HDMI or DisplayPort). To see a more complete list of resolutions follow these steps: - Open the Displays preference in System Preferences - Go to the preferences panel for the DisplayLink screen - While keeping the option (alt) key pressed, select the "Scaled" option for the list of resolutions. The internal screen is kept active while in clamshell mode on OSX systems with a single HD3000 graphics card. Manual Ethernet speed setting is not retained across reboots. (20973) Limitations in macOS 10.13 High Sierra -------------------------------------- Mirroring virtual screens is not currently supported in High Sierra. When attempting to mirror external screens, the Window Server may crash and/or all screens may blank. (25553) When plugging in or unplugging monitors with single EDID or no EDID, the Window Server may crash and/or all screens may blank. (26139) The Accessibility Zoom feature will show corruption and only affect a small area of the screen. (26056) "System Extension Blocked" message displayed after installation. This is expected since High Sierra due to a stricter security policy. - After installation, macOS may require the DisplayLink system extension to be enabled in System Preferences -> Security & Privacy -> General. Click on Allow and restart the system. - For more details please visit http://support.displaylink.com/knowledgebase/articles/1188004 Mac systems not supporting Metal will also be affected by the limitations in the following section. For a full list of compatible systems please see https://support.apple.com/en-gb/HT205073 Limitations in OS X 10.11, macOS 10.12 and macOS 10.13 on systems not supporting Metal -------------------------------------------------------------------------------------- macOS 10.12 Sierra issues resolved in 10.12.x updates (latest tested 10.12.6): - contents are not rendered correctly for windows moved to DisplayLink screens. Refreshing the window content when on the DisplayLink screen recovers. (23147) - Safari not rendering correctly on DisplayLink screens. To work around this issue, activate the "Disable Full Page Accelerated Drawing" flag from the debug menu. (23445) - Safari content crashing when displayed on DisplayLink screens. To work around this issue, activate the "Disable Full Page Accelerated Drawing" flag from the debug menu. (23714) - Accessing Mission Control can crash the Window Server and log out the user without warning. (23832) - Internal screen blank after resuming from sleep with password at wake up set. Since 10.12.4, some systems show corrupted window contents in some applications (Word, Keynote, Parallels, VLC for example). (25191) In 10.12 Sierra, missing rendering in Finder when "Displays have separate Spaces" is disabled in the Mission Control system preference. (24543) - Enable "Displays have separate Spaces" to avoid this issue In 10.11 El Capitan, screen corruption in mirror mode. (22112, 20255) As a workaround for some of the corruption, select the internal screen in the "Optimize for" option in the Display system preference. - This issue has been resolved in macOS 10.12 Sierra. Manual Ethernet speed setting is not retained on El Capitan and later. (20973) 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. Slowness and general instability in mirror mode. (22322, 22356, 22128, 22141, 22114) Logout caused by the Window Server crashing while minimising 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 replugging the DisplayLink device. (16155) Some applications show corruption and/or wrong colours on specific UI elements, for example window controls, tabs and menus. This is due to transparent rendering in Mac OS 10.10 and later. (23151) - To work around this issue, open System Preferences->Accessibility and enable the "Reduce transparency" option. Since OS X 10.10 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) Cannot interact through Screen Sharing with Mac with DisplayLink screens. (25040) 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) - The Dock issue has been resolved in Yosemite 10.10 (15778). H. Common recovery steps ======================== An updated list of troubleshooting suggestions is available at http://support.displaylink.com/knowledgebase/ Most of the issues can be resolved by replugging the DisplayLink device which exhibits the problem. In very rare cases, the recovery requires rebooting. If macOS cannot boot correctly after the DisplayLink software installation or after a system update: - Restart the system and perform a safe boot by keeping the shift key pressed during the startup sequence (it will take longer than usual) - Use the uninstaller to remove the whole DisplayLink software or remove the DisplayLinkDriver.kext file from /Library/Extensions, then restart the system I. Known issues and limitations =============================== Not all display modes are available for rotated DisplayLink screens. (13464) Retina resolutions on DisplayLink screens may result in reduced performance. For higher performance use the screen at its native resolution. (21314) Screen corruption while mirroring multiple DisplayLink screens. (15633, 16121, 17077) Some color calibration applications may not be able to affect DisplayLink screens. Some options in the Accessibility system preference have no effect on DisplayLink screens, for example “Invert colours” and contrast settings. Some advanced DL-41xx features are not supported on the macOS platform: On Screen Display, splash screen and connection status feedback.