Windows 8 and 8.1 Forums

VM Machine Trouble

  1. #1


    Bahrain
    Posts : 154
    Triple Boot: Windows Xp, Windows 7 and Windows Release Preview, Virtual Machine ( Windows 8 )

    VM Machine Trouble


    Quote Originally Posted by Hopachi View Post
    Quote Originally Posted by djshonrock View Post
    when installing guest addition, my screen flickers on my screen resolution... it works good on lower resolution.. n i have it uninstalled to make my vm work properly.. don't know wt'z wrong.. ny help would be appreciated..
    Thank You
    Shon John Xander
    We need some extra info to help you:

    -what VM is it (x86 or x64 and the OS)
    -are you using graphic acceleration or not
    -do you use VT-x

    Maybe we should start a new thread since this one is fixed.

    Regards
    Hopachi
    My VM is Windows 8 Consumer Preview x86
    Yes. i have increased till its maximum level.. 256 MB.. but my lap's GFX size is 2 GB.

    Quote Originally Posted by Hopachi View Post

    Do you use VT-x
    Did not understand that..

      My System SpecsSystem Spec

  2. #2


    Orbiting the Moon
    Posts : 2,975
    Windows 10 x64


    Thanks for the info

    VT-x improves virtualisation support for intel processors (check for "VT-x" or "Vanderpool" or "HAV" technology or something similar in the BIOS)
    x86 virtualization - Wikipedia, the free encyclopedia

    It's just used by Vbox and seen in the acceleration tab.
    Click image for larger version
    I think your system (as seen in yous specs here on site) has VT-x

    But VT-x is not really required.

    It will make your VM work faster, that's all.

    So the real problem is the graphic acceleration. Virtualbox installs the VDDM driver for 3D support by default in the latest versions and it's a buggy driver and still in developpment. The screen flickering it's normal (i'm serious). They still fix crashes for the aero interface but with the latest version (Vbox 4.1.16) the glitches got worse.

    If 3D is enabled, Vbox installs VDDM driver by default.

    It will work after some change of settings but the 3D gaming and acceleration is still unstable and metro apps can crash, but there is basic support and you can mount shared folders and auto-resize the screen.

    Install the latest Virtualbox (now 4.1.16) from https://www.virtualbox.org/wiki/Downloads
    and the extension pack (for usb 2.0)...
    If you already use the latest version:

    Go (in the Win 8 VM) to System -> Advanced system settings -> Settings -> Adjust for best performance
    You can the enable some features like this:
    Click image for larger version
    It' s better than the standard settings with animations (standard settings will work bad on Vbox => especially with 4.1.16)

    Then install the additions in your virtual machine (leave 3D acceleration enabled if you still use 256mb) -> try with 128mb because the VM still uses limited support without dedicated memory (like in the case of VMware Player 3D)
    Reboot and it will work nice (the flickering should be gone by now).
    Some flickering it's still possible due to the driver's status but should work pretty good (works for me in Vbox 4.1.16 on Win7 x64)

    If it still flickers badly (or constantly) try disabling 3D in Vbox settings and remove the VDDM (Vbox display adapter) in the VM's Device Manager (Drivers)
    the reboot the VM without 3D support.

    I'm using the VDDM (3D support) because it 's getting better and better and after applying the fix i've mentioned it should work without flickering.
    Don't use applications that mostly require 3D on Virtualbox because there are limitations (3D support is still experimental and crashes and lacks in performance are daily issues)

    I think it's clarified by now. So the flickering is normal with the current Vbox drivers (look always for newer versions of Vbox and the chance is they fix some 3D support a bit). Try the fix with the Performance Options as sen in screenshot above.

    Sorry if I wrote too much in this post but it should work (with 3D support or not).

    Good luck with the installation.

    Regards
    Hopachi
      My System SpecsSystem Spec

  3. #3


    Orbiting the Moon
    Posts : 2,975
    Windows 10 x64


    I recommend to leave the 3D support on in Virtuabox because Win8 uses it.

    If by chance the 3D support could not be disabled in Vbox (above version 4.1.10) leave it on and just uninstall the Virtualbox Display adapter in Device Manager in the VM.
    Then you will use the Microsoft Standard Display Adapter (with basic 3D support). => Automatic screen resize is not possible with this driver.
    If VBox WDDM works, don't uninstall it!

    This fix was seem in some posts here on the forum as of version 4.1.12 of Vbox the 3D support could not be disabled anymore for Win8 in VBox.

    That's all
      My System SpecsSystem Spec

  4. #4


    Watford
    Posts : 465
    Windows 7 x64 SP1 Home Premium/Win 8.1 in VBox


    Without the WDDM driver you are limited in the display resolutions you can use. Usually these are 4:3 aspect ratio. You can add other screen resoutions by editing the .vbox file in a text editor (I use NP++) and add your own. You need to locate the ExtraData section and add the top line of code found here.

    <ExtraData>
    <ExtraDataItem name="CustomVideoMode1" value="1366x768x32"/>
    <ExtraDataItem name="GUI/Fullscreen" value="on"/>
    <ExtraDataItem name="GUI/LastCloseAction" value="powerOff"/>
    <ExtraDataItem name="GUI/LastGuestSizeHint" value="1024,768"/>
    <ExtraDataItem name="GUI/LastNormalWindowPosition" value="8,27,1024,687"/>
    <ExtraDataItem name="GUI/LastScaleWindowPosition" value="122,108,1128,608"/>
    <ExtraDataItem name="GUI/MiniToolBarAlignment" value="top"/>
    <ExtraDataItem name="GUI/SaveMountedAtRuntime" value="yes"/>
    <ExtraDataItem name="GUI/ShowMiniToolBar" value="yes"/>
    </ExtraData>
    The values are width,hieght,color depth. This only takes effect if the WDDM driver is not used. This will then appear in the Windows screen resolutions. You can have more than one just replace the 1 with 2 etc. This isn't the official way of doing this which is using VboxManage but it works.
      My System SpecsSystem Spec

  5. #5


    Orbiting the Moon
    Posts : 2,975
    Windows 10 x64


    Yes indeed.
    VirtualBox allows up to 16 custom resolution so make sure not to exceed that number.

    I've added these 16:9 known resolutions (in 32bit color) just in case:

    <ExtraDataItem name="CustomVideoMode1" value="800x450x32"/>
    <ExtraDataItem name="CustomVideoMode2" value="1024x576x32"/>
    <ExtraDataItem name="CustomVideoMode3" value="1280x720x32"/>
    <ExtraDataItem name="CustomVideoMode4" value="1440x900x32"/>
    <ExtraDataItem name="CustomVideoMode5" value="1920x1080x32"/>
    1440x900 is actually 16:10

    TIP: you can even use the large HD resolutions on smaller screens using VirtualBox Scale Mode.
    It will probably look messy but at least you can get the feel of a larger screen resolution.
      My System SpecsSystem Spec

  6. #6


    Bahrain
    Posts : 154
    Triple Boot: Windows Xp, Windows 7 and Windows Release Preview, Virtual Machine ( Windows 8 )


    Quote Originally Posted by Hopachi View Post
    Thanks for the info

    VT-x improves virtualisation support for intel processors (check for "VT-x" or "Vanderpool" or "HAV" technology or something similar in the BIOS)
    x86 virtualization - Wikipedia, the free encyclopedia

    It's just used by Vbox and seen in the acceleration tab.
    Click image for larger version
    I think your system (as seen in yous specs here on site) has VT-x

    But VT-x is not really required.

    It will make your VM work faster, that's all.

    So the real problem is the graphic acceleration. Virtualbox installs the VDDM driver for 3D support by default in the latest versions and it's a buggy driver and still in developpment. The screen flickering it's normal (i'm serious). They still fix crashes for the aero interface but with the latest version (Vbox 4.1.16) the glitches got worse.

    If 3D is enabled, Vbox installs VDDM driver by default.

    It will work after some change of settings but the 3D gaming and acceleration is still unstable and metro apps can crash, but there is basic support and you can mount shared folders and auto-resize the screen.

    Install the latest Virtualbox (now 4.1.16) from https://www.virtualbox.org/wiki/Downloads
    and the extension pack (for usb 2.0)...
    If you already use the latest version:

    Go (in the Win 8 VM) to System -> Advanced system settings -> Settings -> Adjust for best performance
    You can the enable some features like this:
    Click image for larger version
    It' s better than the standard settings with animations (standard settings will work bad on Vbox => especially with 4.1.16)

    Then install the additions in your virtual machine (leave 3D acceleration enabled if you still use 256mb) -> try with 128mb because the VM still uses limited support without dedicated memory (like in the case of VMware Player 3D)
    Reboot and it will work nice (the flickering should be gone by now).
    Some flickering it's still possible due to the driver's status but should work pretty good (works for me in Vbox 4.1.16 on Win7 x64)

    If it still flickers badly (or constantly) try disabling 3D in Vbox settings and remove the VDDM (Vbox display adapter) in the VM's Device Manager (Drivers)
    the reboot the VM without 3D support.

    I'm using the VDDM (3D support) because it 's getting better and better and after applying the fix i've mentioned it should work without flickering.
    Don't use applications that mostly require 3D on Virtualbox because there are limitations (3D support is still experimental and crashes and lacks in performance are daily issues)

    I think it's clarified by now. So the flickering is normal with the current Vbox drivers (look always for newer versions of Vbox and the chance is they fix some 3D support a bit). Try the fix with the Performance Options as sen in screenshot above.

    Sorry if I wrote too much in this post but it should work (with 3D support or not).

    Good luck with the installation.

    Regards
    Hopachi
    I Tried the whole thing twice.. dosen't work.. Sorry to say that.. i downloaded the latest version of vbox and the extension.. its going same as before when installing guest addition.. it starts to flicked adn get blacked out except the area that i move my pointer to..
    Thank You
    Shon John Xander
      My System SpecsSystem Spec

  7. #7


    Bahrain
    Posts : 154
    Triple Boot: Windows Xp, Windows 7 and Windows Release Preview, Virtual Machine ( Windows 8 )


    Quote Originally Posted by kado897 View Post
    Without the WDDM driver you are limited in the display resolutions you can use. Usually these are 4:3 aspect ratio. You can add other screen resoutions by editing the .vbox file in a text editor (I use NP++) and add your own. You need to locate the ExtraData section and add the top line of code found here.

    <ExtraData>
    <ExtraDataItem name="CustomVideoMode1" value="1366x768x32"/>
    <ExtraDataItem name="GUI/Fullscreen" value="on"/>
    <ExtraDataItem name="GUI/LastCloseAction" value="powerOff"/>
    <ExtraDataItem name="GUI/LastGuestSizeHint" value="1024,768"/>
    <ExtraDataItem name="GUI/LastNormalWindowPosition" value="8,27,1024,687"/>
    <ExtraDataItem name="GUI/LastScaleWindowPosition" value="122,108,1128,608"/>
    <ExtraDataItem name="GUI/MiniToolBarAlignment" value="top"/>
    <ExtraDataItem name="GUI/SaveMountedAtRuntime" value="yes"/>
    <ExtraDataItem name="GUI/ShowMiniToolBar" value="yes"/>
    </ExtraData>
    The values are width,hieght,color depth. This only takes effect if the WDDM driver is not used. This will then appear in the Windows screen resolutions. You can have more than one just replace the 1 with 2 etc. This isn't the official way of doing this which is using VboxManage but it works.
    Thanks for the info.. but can you tell me how to get to that file? can i edit it using notepad?
    Thank You
    Shon John Xander
      My System SpecsSystem Spec

  8. #8


    Watford
    Posts : 465
    Windows 7 x64 SP1 Home Premium/Win 8.1 in VBox


    f you go into the directory for the VM it is the file with the .vbox extension. I use Notepad++ to edit the file. It gives you the option on the right click menu to edit but you cold use Notepad or any other text editor.

    Click image for larger version
      My System SpecsSystem Spec

  9. #9


    Bahrain
    Posts : 154
    Triple Boot: Windows Xp, Windows 7 and Windows Release Preview, Virtual Machine ( Windows 8 )


    yes.. i got it.. Thank you.. So i can set my desired resolution in that?
      My System SpecsSystem Spec

  10. #10


    Watford
    Posts : 465
    Windows 7 x64 SP1 Home Premium/Win 8.1 in VBox


    Yes you can. With the caveat that it only works when the experimental 3D WDDM driver is not installed, which I think fits your case.
      My System SpecsSystem Spec

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