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I installed the MVD usb2dvi drivers but the new monitor does not show a display and I don't see the MVD usb2dvi icon in the Windows system tray.

Please verify that all cable connections have been made correctly and that the new monitor is powered on, then reboot the system once after installation to be sure that all configuration settings have taken effect. If the problem continues it may be related to the system’s security settings may have prevented the service from being correctly configured. To change this in Windows XP or Vista...
1. Click the Windows Start button > Control Panel. Change the view to "Classic View" in the upper left corner and click the "Administrative Tools" icon to open it. Then click the "Services" icon to open it.
2. Locate “DisplayLink Service” in the list of services. Right-click the service and choose “Properties” to edit the service settings.
3. Select the “General” tab and check the Startup type.
If it is not set to Automatic then change it to automatic and click OK. Now right-click the DisplayLink Service again and choose “Start” or “Restart” to start the service.
If it is already set to Automatic then click the “Log On” tab. On the Log On tab be sure that “Log on as:” is set to the Local System account AND that “Allow service to interact with desktop” is enabled. Click OK, right-click the DisplayLink Service again and choose "Start" or “Restart” to start the service.
4. Restart the system once more after making these changes if the new monitor attached to the usb2dvi does not come on immediately.
5. If the monitor still does not come on please send an email to support.

How do I uninstall the usb2dvi drivers?

To uninstall the MVD usb2dvi display adapter driver go to "Add/Remove Programs" or "Uninstall a Program" in the Windows Control Panel. There are two entries:"DisplayLink Core Software" and "Mobile Video Devices USB Display". Remove the entry for Mobile Video Devices USB Display; the entry for DisplayLink Core Software will be removed automatically upon restart of the Windows operating system.

When uninstalling I get the error "Cannot uninstall DisplayLink Core Software because it is being used by other installed products".

This is caused by attempting to uninstall the DisplayLink Core Software upon which the MVD drivers are based. To uninstall the MVD usb2dvi display adapter driver click to remove the"Mobile Video Devices USB Display". The entry for DisplayLink Core Software will be removed automatically upon restart of the Windows operating system.

Do I have to be an Administrator to install the USB Dock module?

Currently the driver requires the user to have Administrator rights to the computer to install the usb2dvi. The software will continue to work if you subsequently login without Administrator rights.

WMV files stop playing on the usb2dvi attached monitor with a blank screen after a few minutes of playing.

This is due to an interaction of Windows Media Player overlays and the MVD usb2dvi software and can be worked around by disabling overlay support in Windows Media Player. To do this, open Windows Media Player and choose the tools menu (ALT+T), then click Options -> Performance tab -> Advanced button. In the Video Acceleration area, clear the Use Overlays check box.

I see the message "Failed to install device driver" when trying to install the usb2dvi.

This can occur if you have previously uninstalled the MVD usb2dvi software and then try to reinstall without rebooting. The PC needs to be rebooted after an uninstall before new software can be installed.

I see the error message "Cannot uninstall DisplayLink Core Software because it is being used by other installed products" when I try to uninstall.

To uninstall you must remove the "Mobile Video Devices USB Display" software, the "DisplayLink Core Software" will then be removed automatically upon reboot.

When setting the usb2dvi Display Adapter to primary, the setting is not remembered by windows when pressing "Apply" or "OK" on Windows display properties.

This may occur on certain laptops where the primary graphics adapter ensures that the laptop screen, if enabled, is always the primary screen. To prevent the laptop screen from being primary, it needs to be disabled, allowing the usb2dvi Display Adapter to be primary. However after a reboot, the primary graphics driver may detect that neither of the laptop displays are enabled, therefore re-enable the primary laptop display, thus preventing the usb2dvi Display Adapter from becoming primary after a reboot.

How do I use the USB Display Adapter as a primary display?

Open the "Settings" tab of the Display properties page.

Click on the Monitor connected to the MVD usb2dvi Display Adapter and ensure that the "Extend my Windows desktop onto this monitor" is checked.

Check the "Use this device as the primary monitor". (The orientation of the screens can also be adjusted by dragging the location of the blue screens to match the actual physical layout.)

To stop this screen being the primary monitor, another screen must be selected as the primary monitor.

Note for laptop users: Some notebook graphics chips will not permit any monitor other than the built-in notebook screen to be the primary monitor.

Is Windows 2003 server supported?

Although not supported or tested, the USB display adapter can be installed and used under Windows 2003 Server. However the USB display adapter does not operate in extend mode by default.

By default, when installed, Windows 2003 Server reduces the Hardware Acceleration level of the USB Display Adapter. The USB Display adapter requires full hardware acceleration to be enabled to correctly operate. To enable full hardware acceleration:

Open the Windows Display properties
Click on the "Mobile Video Devices USB Display Adapter (DisplayLink)"
Click on "Advanced"
Select the "Troubleshoot" tab
Make sure that the hardware acceleration level is set to "Full"
Click "OK"

It will now be possible to use the USB display adapter in extend mode.

Windows icons are not drawn properly when being mirrored to the USB Display adapter. Moving the mouse over the icons forces them to be re-drawn correctly.

This can occur when the USB Display Adapter is mirroring the primary display and there is another screen in extend mode, e.g. the direct VGA output from a laptop. This is a Windows issue, and the solution is to disable the extended screen if appropriate. A workaround for this isue may be released in a future version of the software (MVD software 4.9 is current as of this writing - if a newer version is available then this may be corrected in the newer version).

Is DirectX supported by the MVD usb2dvi Display Adapter?

Yes, the MVD usb2dvi Diaplay Adapter supports DirectX however a subset of DirectDraw commands are supprted as there is currently no support for Direct3D on Windows XP.

What is the maximum number of monitors I can simultaneously connect with the MVD usb2dvi to my system?

Officially, up to 6 usb2dvi Display Adapters are supported. Some user's have reported using more than that. Our findings have been that Windows supports up to 10 well, more than 10 requires 3rd party multi-monitor software. The beta MAC drivers support up to four connected monitors.

Ultramon smart taskbar is not available on the MVD usb2dvi extended screen

This is an issue with Ultramon not supporting the dynamic addition of display adapters. The solution is in a FAQ on the Ultramon website here.

Movie playback is not smooth when played on the USB display adapter. It is worse when playing a media clip in full screen.

Movie playback may not be smooth due the large amount of display data being transferred during movie playback. (Note: Movie playback has been greatly improved in later versions of software. We recommends using the latest available software for movie playback.) Improvement to video playback is regularly made through driver updates. Please ensure that you are using the latest version of the driver.

Other ways to improve the performance are:

Reduce the resolution of the display to 640x480 or 800x600
Use the USB display adapter in extend mode
Terminate any other CPU intensive applications running on the computer.

The MVD usb2dvi Display Adapter supports playback of SD/DVD/480p resolution video clips. HD clips are not currently supported.

Why is there a delay between the connection of the USB cable and an image appearing?

The reason for this is that the PC needs to detect the new USB device and configure it. This configuration can take a few seconds to complete before the USB Display Adapter is ready to start displaying an image.

On connection of the MVD usb2dvi display adapter, the Found New Hardware Wizard does not appear and/or "Mobile Video Device USB Display" nor "DisplayLink Core Software" is found under "Add/remove programs".

This can occur if the MVD usb2dvi or another DisplayLink based display adapter has previously been connected to the PC, but the Found New Hardware wizard had been cancelled. This means that the PC may not prompt for the installation of the MVD usb2dvi software. To resolve this issue, download and install the latest drivers available from our website.

I am using a Toshiba Dynadock and am experiencing blue screens, reboots, or corrupted images on web pages.

This is caused by the Ethernet driver in the Dyandock. Please ensure you are using the latest AX88772 USB Ethernet driver. It can be downloaded from the ASIX website: http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=86;71;101

OpenGL screensavers (the 3D ones such as 3D flowerbox) do not display correctly in either extend or mirror mode, and may cause screen flashing.

This is due to interaction between OpenGL and the MVD usb2dvi's graphics drivers. The solution is to not use the OpenGL or 3D screensavers.

Google Earth maps are not drawn correctly on the mirrored screen. Moving the mouse over the screen forces them to be re-drawn correctly.

This occurs because Google Earth uses 3D libraries that interact with the MVD usb2dvi's core graphics driver from DisplayLink. The problem occurs with both OpenGL and DirectX configurations of Google Earth. The solution is to use Google Earth on an extended screen if appropriate. DisplayLink recommends OpenGL mode rather than DirectX mode for Google Earth.

Can movies be played on the cloned (mirrored) screen?

Playing movies in mirror mode is not supported by Windows and therefore not supported by the MVD usb2dvi. This is because the Windows mirror driver does not support DirectX, required by some media players.

Video playback can be unpredictable in clone mode in Windows and performance will be considerably lower than the same screen in Extended desktop mode.

Adobe Photoshop Album Start Edition 3.0 does not work in full-screen mode.

Adobe Photoshop Album Start Edition 3.0 maximises to the size of the primary screen, not the size of the screen it is on. This is a limitation of Adobe Photoshop Album Start Edition 3.0. Either use it in windowed mode, or adjust the resolutions of the primary and extended monitors so that they match.

Does the MVD usb2dvi work on 64-bit editions of Windows XP or Vista?

MVD usb2dvi software does not run on 64-bit editions of Windows. Do not try to install on these platforms. Support is planned for 64-bit Vista and will be released in a future version of the software.

When a movie is paused and the window of the player is moved, the picture sometimes stays where it is and does not move with the window.

This has been observed with MPlayer and with RealPlayer when a divx is played. This is a known limitation for performance reasons and is application specific. Do not move the player window while the movie is paused.

When installing the MVD usb2dvi software with an anti-virus program installed, a high alert warning is shown saying that a malicious script is detected.

This occurs because the installer runs some VB scripts. Depending on its security level, an anti-virus program would alert about this. It may be necessary to disable virus checkers, or lower the security level to allow installation.

There is no Display on the MVD usb2dvi connected monitor when there is no user logged in

This can occur if a MVD usb2dvi Display Adapter that the PC has not seen before is attached to a USB port that has not seen a device before. If the MVD usb2dvi is moved from one USB port to one to which it has never been connected, it stays in a disabled state until a user logs in. In particular, the login screen does not appear on it on the monitor for this first use.

Error message: The requested allocation size was too large

This can occur if trying to mirror a primary display larger than 4 MegaPixels. These are modes above 2300x1700 (4:3) or 2600x1500 (16:9). Reduce the size of the primary screen to use mirror mode.

Is video playback affected by enabling / disabling screens and changing primary?

Some DVD players and movie players do not respond well when a monitor is enabled or disabled in the Windows Display Properties dialog box or when a non-primary monitor is made the primary monitor.

Problems include the following:

WinDVD and VLC behave unpredictably when screens are enabled or disabled.
RealPlayer resets back to the beginning of a DVD when a second or third screen is enabled or disabled.
Windows Media Player appears to be unaffected when screens are enabled or disabled, though there is a little flicker.

Can the DVD window be dragged between monitors?

Some DVD players and movie players do not respond well when the movie window is moved from one monitor to another. Problems include:

WinDVD 8.0
- Dragging a paused movie from either the MVD usb2dvi's connected monitor to the Laptop or from the Laptop to the MVD usb2dvi's monitor results in a blank player screen on the destination screen.
WinDVD 5
- When moving a playing movie window onto an extended screen, the movie should be stopped or paused, then moved, then restarted.
PowerDVD 7.0
- Moving a paused movie from either the MVD usb2dvi adapter screen to the Laptop or from the Laptop to the MVD usb2dvi adapter screen results in a blank player screen on the destination screen.
- Dragging a paused movie from an extended MVD usb2dvi adapter screen to the main screen, playing it, pausing it, dragging it back to the MVD usb2dvi adapter screen and then playing it again results in the player display only appearing in the space occupied by the player's overlay control.
Windows Media Player 9
- 16:9 DVD, moving the playing window to the MVD usb2dvi adapter screen results in the player looping through the DVD chapters, without displaying anything.
- Move it back to the main screen and it displays again.

Why are some screen updates missed, but can be "painted in" with a mouse?

In some situations, some screen updates do not appear on the MVD usb2dvi connected monitor but do appear when the mouse is moved over the place where they should be. This can occur:

On the MVD usb2dvi connected monitor when cloning the primary screen and there is a second MVD usb2dvi Display Adapter that is set to extend mode
On the MVD usb2dvi Display Adapter screen if it is the primary screen and there is a directly attached screen that is extending
If the Hardware acceleration is reduced (from Windows Display Properties, select MVD usb2dvi monitor, 'Advanced', 'Troubleshoot' tab).

This is caused by Windows altering the frame buffer directly, bypassing standard GDI calls. This means that the driver does not get informed of the changes.

The workaround is to make sure that the Hardware acceleration is at its maximum value, and to use the mouse to 'paint in' areas that were not updated.

Does Windows Media Player work with the MVD usb2dvi Display Adapter?

Yes, Windows Media Player (WMP) version 10 and version 11 work when part of the extended desktop but, WMP does not respond well in all situations:

WMP can default to using a decoder that does not work on MVD usb2dvi extended screens. This occurs with decoders that require the video mixing renderer. The workaround is to turn off support for the video mixing renderer. To do this:
- Open the Tools Menu
- Select options
- Select performance
- Select the advanced button
- Uncheck the two boxes labelled 'use video mixing renderer'.
WMP may not fully redraw if the video window moves, or other windows move over it.
Although not supported, using WMP 9.0, with a 16:9 DVD and moving the playing window to the Nivo screen results in the player looping through the DVD chapters, without displaying anything. Move it back to the main screen and it displays again.
If you start WMP, then move it to the MVD usb2dvi screen and start a 16:9 DVD it displays incorrectly with an aspect ratio of 4:3. If the DVD is started with the window on the main screen, it plays with correct aspect ratio.
Moving another window on top of the WMP window sometimes leaves a small white area

Windows Media Player version 11 issues

Windows Media Player 11 may have issues playing video on an extended screen under Vista.
If Windows Media Player version 11 is playing video on an extended MVD usb2dvi display, and if the resolution of that display changes, the video may move to another display or may show corruption. Clicking on or moving the video windows fixes this.
Setting Windows Media Player 11 to full screen mode, only displays on the primary screen. When set back to windowed mode, the window is displayed on the MVD usb2dvi extended screen correctly. This also occurs if using a direct VGA connection from the primary graphics card, therefore this is an issue with WMP v11.
When unplugging the USB cable, the video window correctly returns to the main display, but no video is displayed - the video area is transparent. As soon as the window is moved, the video is displayed ok. This also occurs with a direct VGA connection therefore it is an application issue.
Video playback using WMP v11 in mirror mode will not be smooth, as it is software rendered
WMP v11 does not support fast user switching while playing videos

Does PowerDVD work with the MVD usb2dvi Display Adapters?

Yes, PowerDVD works on the MVD usb2dvi Display Adapters when part of the extended desktop. PowerDVD does not respond well in all situations, however. In particular:

Video hardware acceleration must be turned off in the PowerDVD options (configuration options, video tab).
With PowerDVD 7.0, dragging a paused movie from either the Nivo to the Laptop or from the Laptop to the Nivo results in a blank player screen on the destination device. Also, dragging a paused movie from an extended Nivo to the main screen, playing it, pausing it, dragging it back to the Nivo screen and then playing it again results in the player display only appearing in the space occupied by the player's overlay control.
When the mouse is moved over the playing movie, a black shadow appears behind it.
Uncovering the PowerDVD window (by moving another window off it) may cause other screens to flicker and redraw.

Does WinDVD work with the MVD usb2dvi Display Adapters?

Yes, WinDVD works on MVD usb2dvi Display Adapters when part of the extended desktop. WinDVD does not respond well in all situations, however. In particular:

With WinDVD 8.0, dragging a paused movie from either the Nivo to the Laptop or from the Laptop to the Nivo results in a blank player screen on the destination screen.
WinDVD8 doesn't run full screen on a directly-attached non-primary monitor. This is an application issue with WinDVD 8.
With WinDVD 5, when moving a playing movie window onto an extend screen, the movie should be stopped or paused, then moved, and then restarted.
A black shadow appears behind the mouse pointer when it is moved over movie window.
WinDVD does not like resolution change of the screen to the left or below of the screen it is playing on. This causes clipping of the video window.
WinDVD4 will not work with ANY extended screen playback

Does Skype video work with the MVD usb2dvi Display Adapters?

Skype video does not work with MVD usb2dvi Display Adapters under Windows XP. This is because it requires Video Mixing Renderer (VMR9) support, and the MVD usb2dvi does not currently support this functionality.

A command prompt in full screen mode is not displayed on the MVD usb2dvi Display Adapter screen

Launch a command prompt (DOS window) and press Alt+Enter to switch the command prompt into Full Screen display mode. Any MVD usb2dvi attached displays stop updating. When the command prompt is closed, the attached displays start working again.

When the command prompt is switched to Full Screen mode, the whole Windows display subsystem is disabled and all screen rendering is done via the DOS subsystem. MVD usb2dvi graphics drivers run within the Windows subsystem and cannot detect DOS direct drawing commands.

The workaround is to use the command prompt in windowed mode.

Can two video windows be displayed on the same MVD usb2dvi connected monitor?

It is often not possible to display two videos or DVDs on the same MVD usb2dvi connected monitor. This is because the overlay technology used to draw the video content onto the monitor supports only a single overlay at a time. If it is necessary to display two videos at once, make sure they are on different screens.

Which Media players does the MVD usb2dvi support?

The MVD usb2dvi supports the latest versions of the following media players for use with its technology:

VLC
Power DVD
Win DVD
Windows Media Player
RealPlayer

WinDVD , PowerDVD and Windows Media Player work well with the MVD usb2dvi Display Adapters. See separate FAQ entries for each of these players.

There is limited support for other players. Here are some examples:

Quicktime movies may work on MVD usb2dvi Display Adapter screens, however they cause a lot of screen flashing when starting up.
Sometimes .mov files shown in Quicktime 7.4 show corrupt output. The workaround is to disable DirectX mode on the Advanced tab in the Quicktime player plug in settings.
Mplayer is capable of displaying only on the primary display. It works on a MVD usb2dvi connected monitor that has been made the primary display.
VLC media player plays but has issues if the screen settings are changed during playing.
Moving RealPlayer (v10) video between extended screens does not work. It either won't play on the second screen or when moved back onto the primary screen, the DVD playback restarts from the beginning. It also occurs on direct VGA, therefore an issue with Realplayer.

Which Windows operating systems does MVD usb2dvi support?

On certain versions of Windows, the MVD usb2dvi software cannot be installed. MVD usb2dvi software requires certain Microsoft patches and service packs (SP) for correct operation. The installer for MVD usb2dvi software prevents the installation on:

Windows 2000 SP1
Windows 2000 SP2
Windows 2000 SP3
Windows XP
Windows XP SP1

The reason that Windows 2000 SP4 is required is for Microsoft to provide USB2.0 support. The MVD usb2dvi requries USB2.0 for correct operation. Further details are available from the Microsoft knowledgebase here

Windows XP requires SP1 to add support for USB2.0, therefore Windows XP with no service packs is not supported.

Windows XP SP1 has an instability which could be observed with the USB Display Adapter. Therefore the MVD usb2dvi does not test or support Windows XP with SP1. Further details of the Microsoft instability can be found here

64 bit Windows Vista support is exptected to be available in summer 08 and s is currently being developed by DisplayLink. Once this update is released it will be incorporated into the MVD usb2dvi's software.

The MVD usb2dvi supports the following operating systems:

Windows 2000 with SP4
Windows XP with SP2
Windows Vista (32 bit only)

What is the maximum USB distance a device can be from a PC?

The distance between a computer and a device or hub is stated to be five meters according to the USB specification. The maximum distance distance per USB specification is 30m by using five hubs.

It is possible to extend the distance further by using networked USB solutions, however these devices may only support up to USB1.1 and not the USB2.0 standard. USB2.0 is required for the MVD usb2dvi.

Error message: Insufficient system resources exist to complete the requested service

This can occur when entering extend mode with low system resources. The PC does not have enough memory to start an extended display. To resolve, close down any unused applications. The situation may also be improved by rebooting the PC.

Changing the primary monitor during movie playback stops the movie working on the primary screen

This problem appears to be an issue with Windows, as the same behaviour is observed when using second output of VGA card. To workaround, do not change the primary display while playing a movie file

On disconnecting a MVD usb2dvi that is the primary display, PC exits power save mode

If the MVD usb2dvi display adapter is set to be the primary monitor, and is disconnected, the PC will exit power saving mode. This is because the Windows Display Properties change, bringing the PC out of power save mode

The MVD usb2dvi device is not recognised on a PC with Fast user switching

Installing the MVD usb2dvi software with Fast user switching and two users logged on

works however no image is seen on the MVD usb2dvi connected monitor. To resolve, a reboot is required before the system detects the new device. It is recommended that the MVD usb2dvi software is only installed when a single user is logged into the PC.

Disconnecting or reconnecting during screensaver cancels the screensaver, and can produce white screens, which don't cleanly exit.

On all OSes, detaching or attaching the MVD usb2dvi while a screensaver is running may cause strange effects. The screensaver cancels because the Windows Display Properties change, which causes the displays to exit out of the screensaver

Sometimes it is necessary to detach and reattach the MVD usb2dvi after exiting the screensaver.

There is no workaround for the cancelling out of screensaver issue

Video performance is slow on Windows 2000, also moving a window is slow on a MVD usb2dvi screen.

In the Windows 2000 Device Manager under Universal Serial Bus Controllers there should be an item called "USB 2.0 Root Hub". If it is not there then they adapter will be using USB1.0 rather than USB2.0, which is slower. To resolve, install the USB2.0 driver as described in the Microsoft knowledgebase article here.

My HP LP2465 Monitor flicks on/off when connecting the monitor to the MVD usb2dvi using a VGA cable

This monitor provides strange detection when connecting over VGA. The monitor keeps appearing as a "new" monitor. This causes the software to think there is a new monitor connected, causing the flicking on and off. To workaround this issue, disable auto-input detection on the monitor.

Should firewall programs be stopped during installation?

Setup.exe causes alerts sometimes during installation.

During installation, it is possible that setup.exe tries to connect to the Internet to get Certificate Revocation List. This is to verify the MVD usb2dvi digital signature. This is a normal part of the installation process.

Windows has a cache of Certificate Revocation Lists so Setup.exe does not have to connect to the Internet on each install.

The best bet is to NOT disable the Firewall and to let Setup.exe connect to the internet if requested.

How does the MVD usb2dvi work with a monitor that does not support automatic detection of supported resolutions?

If a monitor supports EDID, it will report a list of supported modes to the MVD usb2dvi software. Those modes that are supported by both the monitor and the MVD usb2dvi hardware/software will be offered to the user.

However if no modes are offered by the monitor, a different method must be offered. If no EDID is detected and the monitor reports no supported modes, the MVD usb2dvi software will offer the following modes:

1680x1050
1600x1200
1400x900
1366x768
1360x768
1280x1024
1280x720
1024x768
800x600
720x480
640x480

Notes:

Higher resolutions may not be available on some devices

Not all these resolutions may be supported by the connected monitor. Please confirm that the resolution is supported by the monitor before connecting it, failure to do so may result in damage

When connecting the MVD usb2dvi monitor on ATi based systems it is installed by Windows as display 2 and is visible in windows display properties, but cannot be enabled as an extended monitor.

Some laptops with ATi based PCs always assume that the second display is the VGA port on the laptop, but on some occassions Windows may enumerate the displays in a different order. ATi has written an application (ATI2EVXX.EXE) that runs in the background of windows. This application disables monitor number 2 if nothing is plugged into the VGA port.

If the MVD usb2dvi is installed as display 2, and configured to extend mode, then the ATi application disables it - because nothing is plugged into the VGA port.

To workaround, disable the background task ATI2EVXX.exe. This can be done by removing the startup entry in the registry under HKLM/Software/Microsoft/Windows/Current Version/Run/

Note: MVD does cannot take responsibilty for any problems caused by users changing or corrupting their registry - make a backup!

When connecting multiple MVD usb2dvi's to a PC running Vista, only one screen can be configured in extend. All other screens are in Mirror mode.

This is due to a restriction of Microsoft Vista. If the primary display is using XDDM (XP) graphics drivers, it is only possible to configure one extended display. WDDM (Vista) graphics drivers need to be used by the primary graphics card to allow more than one extended screen with the USB display adapters.

Please download and install WDDM drivers for your primary graphics card.

When installing the MVD usb2dvi software, one or more reboots are required before an image is seen on the display.

Occasionally, when installing the drivers on Windows XP, the extend and/or mirror driver is not correctly started by windows and cannot be used by the MVD usb2dvi software. The software detects this and prompts the user to reboot.

After installing on Windows Vista, a reboot is always required. This is required to allow the MVD usb2dvi / DisplayLink chipset service to start. After the PC restarts, occasionally the extend and/or mirror driver is not correctly started by Windows (same issue as XP above). Therefore another reboot may be prompted. This means that it is possble that a PC using Vista may have to be rebooted multiple times before an image is seen on the display. We continue to investigate a solution to multiple reboots sometimes being required in Microsoft Vista.

The MVD usb2dvi only shows 16 (4bit) colour VGA

Having installed the MVD usb2dvi software, the Primary and/or the MVD usb2dvi display are in VGA and only 4 bit colour. This is caused by the fact that some third party graphics drivers assume the position of their displays and try and control MVD usb2dvi displays. This results in unpredictable behaviour.

This has been seen with an ASUS PCI-E graphics card. The problem is fixed by disabling the "Enhanced Display Driver Helper Service" in device manager:

When connecting or disconnecting a MVD usb2dvi Display Adapter, the icon positions move or appear on the wrong monitor after you change the primary monitor in Windows XP.

The same problems can be observed using two built in graphics adapters. Therefore these are not issues with the MVD usb2dvi software, but with Windows. On XP, after the primary monitor is changed to a MVD usb2dvi atatched extend screen, the desktop icons may appear on the wrong monitor.

These are both problems with Windows and its handling of extended displays. There is no solution for this Windows issue.

Installation fails with error 2738

Windows Installer error 2738 may happen if the user's VBScripting service isn't working correctly. Possible causes are:

Antivirus or personal firewall software is blocking VBScripts (or scripts in general):
VBScripts has been disabled on your PC
Windows Scripting Host installation is broken

Antivirus or Firewall Software is an issue:

Switch off blocking of VBScripts in your antivirus and/or personal firewall software.

Disabling personal firewall or antivirus software may also be an option, if you're not sure whether your security software can block VBScripts.

VBScripts Disabled
To verify that this is the case:

create a VBScript file (e.g. test.vbs, extension .vbs is important)
open test.vbs with notepad and type MsgBox "Hello World"
save the file and close notepad
double-click on test.vbs
if VBScripts has been disabled you should get an error message similar to: "Can't find script engine "VBScript" for script "C:\test.vbs""
if VBScripts are enabled you should see a dialog box with "Hello World" message and OK button.

To reenable VBScripts:

Log in as Administrator
Click on Start->Run,
In Open: text field type cmd and click OK (Command Line Window will appear)
In the Command Line window type: regsvr32 vbscript.dll and press Enter (this should enable VBScripts on your PC; message saying "DllRegisterServer in vbscript.dll succeeded" should appear to confirm that).
Double click on the previously created test.vbs to confirm that VBScripts are working (you should see a dialog with "Hello World" message).

Windows Scripting issue

Reinstall Windows Scripting Host (http://www.microsoft.com/downloads/details.aspx?FamilyId=C717D943-7E4B-4622-86EB-95A22B832CAA&displaylang=en

What operating systems besided Windows are supported? Is there support for MAC? Linux?

A Mac OS X beta driver for Intel Macintosh computers is available. It can be downloaded from the downloads section of the usb2dvi.com website. Support for other operating systems is being address and MVD will provide updates to this FAQ entry when more information is available.

I am having problems using MVD usb2dvi connected displays with PhotoShop CS2

There are some known issues with using the MVD usb2dvi with Adobe Photoshop CS2. Updating CS2 to from v9.0 to v9.02 has been shown fix known issues.

After resuming from sleep, or unlocking, the MVD usb2dvi's display mode changes from extend to mirror

On Vista WDDM, some computers with Intel graphics reset the MVD usb2dvi from extend to mirror when coming out of sleep, or unlocking after a lock screen. The Intel software is updating the display settings according to what it thinks is required; this occurs after the MVD usb2dvi Manager has finished setting up the displays. The Intel software "Graphics Media Acceleration" control panel applet and system tray icon does not recognize our monitors.

The easiest way to stop this problem is to disable the Intel persistence application, igfxpers, using Windows defender.

To disable the Intel desktop persistence program:

Open control panel
If you are not using the classic view, select "Change startup programs" from the Program group, then go to step 7 li>If you are using the classic view select "Windows Defender"
Click on the "Tools" icon
Click on the "Software Explorer" link
Ensure the Category is set to "Startup Programs"
Click on the "Show for all users" button
There should be three items called "Intel (R) Common User Interface", click on each until you find the one that has the File Name: igfxpers.exe
Press "Disable"
A message "Are you sure you want to disable the application" will appear, make sure that the file name is correct and then press "Yes"
Close Windows Defender and then restart the system.

To reenable the Intel desktop persistence program use the same steps, but press "Enable"

Powerpoint 2007 slide show does not work

In Powerpoint, the "Display slide show on:" menu has a bug which means that it does not work when there are gaps in the numbering of enabled displays (as shown in WDP). The behaviour described is caused by a bug in PowerPoint when there is a gap in the Windows Display Properties (WDP) numbering of ENABLED displays.

PP enumerates the NUMBER of enabled displays, then populates the "Display slide show on:" box with the 1st, 2nd, 3rd, ... etc display (as numerated by WDP), whether or not the display happens to be attached and enabled.

This means that if displays 1 and 3 are enabled (a common set up when there is one MVD usb2dvi display attached), then the "Display slide show on:" menu in the "Set up slide show" box actually shows Display 1 and Display 2 (assuming there is a disabled 2nd head on the graphics card). As expected, enabling display 2 fixes the problem.

Solution:

Users of Powerpoint 2007 can get round this by using "Show presentation on:" in the ribbon, rather than the "Set up slide show" box.