VESA DisplayPort User Manual Download Page 15 | Manualshive

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VESA DisplayPort User Manual Download Page 15

VESA DisplayPort Audio User Guide

©Copyright 2011 Video Electronics Standards Association Page 15 of 18

In the next example, the hardware and driver do support DisplayPort audio.   Note that “Nvidia High   Definition   Audio” is
selected.    In this   example, a display that supports   DisplayPort audio (EA231WMi-‐1) is connected, and the   operating
system has   automatically selected it as   the preferred playback device.

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Summary of Contents for DisplayPort

Page 1: ...ode Sources and adaptors may be marked with the DP icon DisplayPort dual mode icon About this guide This guide provides information about DisplayPort systems and adaptors for the purpose of enabling audio capabilities The information presented is representative of typical computers and operating systems but does not cover all possible combinations The most up to date information can be obtained fr...

Page 2: ...ctronics Standards Association Page 2 of 18 Contents Enabling DisplayPort Audio 2 AMD Example on Windows Vista and Windows 7 3 Cable Adaptors and HDMI ID ROM 4 Apple Example 6 Intel Windows XP Example 9 Nvidia on Windows 7 Example 11 Troubleshooting 14 FAQ 15 ...

Page 3: ...s chip drives the DisplayPort output That means that the graphics device has to send the audio signals along with the video signals The first step in enabling audio is to determine that the graphics hardware and driver support this function In the following examples typical devices are shown Your system may have different devices For example in the sample shown below your system may have other har...

Page 4: ...ide Copyright 2011 Video Electronics Standards Association Page 4 of 18 If no hardware or driver support for DisplayPort or dual mode audio is present the dialog box looks like this Note that there is no option for DP or HDMI output ...

Page 5: ...of 18 In the next example the hardware and driver do support DisplayPort audio In the Sound dialog box note that ATI DP Output is selected In this example a display that supports DisplayPort audio is connected and the operating system has automatically selected it as the preferred playback device ...

Page 6: ... the HDMI ID ROM When a cable adaptor is attached the graphics driver reads the device to see if the ID is present Some cable adaptors with HDMI outputs do not have this ID When that happens the graphics device assumes the adaptor is DVI and does not send audio to it DVI devices do not support audio over the DVI interface The following dialog box appears when an AMD driver detects a cable adaptor ...

Page 7: ...Port Audio User Guide Copyright 2011 Video Electronics Standards Association Page 7 of 18 This shows that while the hardware and driver support DisplayPort audio there is no display or adaptor with audio connected ...

Page 8: ... 2011 Video Electronics Standards Association Page 8 of 18 Apple Products Check that the system software is up to date before proceeding Click the Apple icon upper left corner of the display then System Preferences Sound and click the Output tab ...

Page 9: ...ide Copyright 2011 Video Electronics Standards Association Page 9 of 18 If no hardware or driver support for DisplayPort or dual mode audio is present the dialog box looks like this Note that there is no option for DP or HDMI output ...

Page 10: ...ciation Page 10 of 18 In the next example the hardware and driver do support DisplayPort audio and a display that supports DisplayPort audio is connected Note that Sync Master with Type DisplayPort is selected The operating system has automatically selected it as the playback device ...

Page 11: ...ble Adaptor that does not have ID is connected then the dialog box will be the same as the example above where audio is not supported If a cable adaptor with ID is connected and a display that supports audio i e a DP to HDMI cable adaptor and a TV with HDMI input then the following will be seen Note that the Type is now HDMI ...

Page 12: ... and other operating systems Check that the latest graphics drivers for your system are installed before proceeding Right click the speaker icon in the lower right corner of the Desktop and select Adjust Audio Properties If no hardware or driver support for DisplayPort or dual mode audio is present the entry in the dialog below Intel R Display audio would not be present Note that IDT High Definiti...

Page 13: ...Video Electronics Standards Association Page 13 of 18 In this example a display that supports DisplayPort audio is connected or a cable adaptor and an HDMI display are attached and the operating system is set to use it as the preferred playback device ...

Page 14: ...a on Windows 7 Check that the latest graphics drivers for your system are installed before proceeding Right click the speaker icon in the lower right corner of the Desktop and select Playback Devices If no hardware or driver support for DisplayPort or dual mode audio is present the dialog box looks like this ...

Page 15: ...of 18 In the next example the hardware and driver do support DisplayPort audio Note that Nvidia High Definition Audio is selected In this example a display that supports DisplayPort audio EA231WMi 1 is connected and the operating system has automatically selected it as the preferred playback device ...

Page 16: ...ight 2011 Video Electronics Standards Association Page 16 of 18 Cable Adaptors If a cable adaptor without HDMI ID ROM is connected audio will not be routed to the adaptor Note that the TV LG TV1 is connected but audio is not being sent to it ...

Page 17: ...at audio is supported This can be due to a cable adaptor that does not have HDMI ID ROM or a display that does not have audio capability Check the user manual first and then contact the sink device manufacturer to see if the Sink has audio support Troubleshooting If you follow the steps above and still cannot get audio from your Sink device try the following Check the user manuals first and then c...

Page 18: ...eck the user manual first and then contact the manufacturer to see if your system has this feature Does the mini DisplayPort connector support audio or dual mode Yes The mini DisplayPort connector has all of the same signals or wires as standard DisplayPort just in a smaller connector As with standard DisplayPort most but not all Sources support audio and dual mode Do I need a special cable to use...

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