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I'm not able to switch to Seamless Mode in VirtualBox with Ubuntu 10.04 or 9.10 as guest OS's. I have tried the seamless mode with XP as guest OS, and it works absolutely fine. The host OS is Windows 7.

I have in-built Via/S3G Unichrome Pro IGP graphics, and I have allocated 30 MB out of 64 MB of graphics memory. I've also 1.5 GB of RAM.

I also tried installing Guest Additions but it still didn't work. VirtualBox version is 4.0.4r70112. The Host+L does not lead to seamless mode. i.e. under the Machine menu in Virtual box window "Seamless mode" is disabled (comes in grey color). How can I get the seamless mode to work? Please help!

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3 Answers

up vote 1 down vote

For seamless mode (Host+L) Virtual Box Guest Additions of the same program version need to be installed in the guest OS.

How to install Guest Additions see also this answer. In some cases you will simply need to reinstall the Guest Additions if they don't run the way they should.

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Takkat i have installed Virtual box and guest additions of same version. But what problem i have is the Host+L does not lead to seamless mode. – JaggiB Mar 2 '11 at 4:25
If I got you right then you are able to select seamless but you can't move the window of a guest Ubuntu program to the desktop of your host? – Takkat Mar 2 '11 at 8:52
i m not able to select seamless mode. – JaggiB Mar 2 '11 at 17:30
This usually indicates that Guest Additions are not installed. Try again and don't forget to reboot the guest OS to take effect. – Takkat Mar 2 '11 at 17:37
i have tried all that but still the same problem. Anyways thanks. – JaggiB Mar 3 '11 at 10:13
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up vote 0 down vote

Install Guest Addtions from Synaptic.

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how to look for guest additions in synaptic. is there a package name for it. – JaggiB Mar 1 '11 at 17:58
Go to Synaptic, after it loads, you'll see a search box in the top right corner. Simply type guest additions there and press Enter. – Oxwivi Mar 1 '11 at 18:14
@jaggib, did you try install Guest Additions from Synaptic yet? – Oxwivi May 31 '11 at 15:55
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up vote 0 down vote

May be you forgot installing the guest additions in the GUEST. For doing so, click in the menu "Devices" in the GUEST window, and choose "install guest additions"

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