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I recently installed virtualbox. I tried to run ubuntu 10.04 and it worked fine in fullhd resolution. Then I installed Ubuntu 12.04 and now when I to setup up any fullhd resolution UI becomes very slow, almost unusable. Other high resolutions work fine (for example 1600x1200. I am not sure what the source of the problem might be. (I have guest additions). Thank you for help!

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If that's fresh installation, you'll probably need to install Guest Additions. God help you otherwise. – elmigranto Oct 18 '12 at 22:44

I have been faced with the same problem, when I came upon this ticket at, by user "SB1234", last post:

I tried the work around to set the modes the width to 1 pixel less than the actual width. And it worked for me in fullscreen. However after exiting from full screen the resolution remained at that value. (it did not auto adjust)

Anyway after rummaging through more links online i found out that there are certain workarounds in the compiz settings manager. i was able to find one particular option that solves this problem (Yippie!!)

first you need to install compizconfig-settings-manager using sudo apt-get install compizconfig-settings-manager.

Then in Preferences->Compizconfig-settings-manager look for Utility. And then 'check' the workaround item. Finally in the settings for the workaround item, look for 'Force fullscreen redraws (buffer swap) on repaint' and check this option. Thats it!

It worked for me. I had been looking for a fix for several weeks.:D

Win7x64 bit host. Virtualbox 4.1.8 with Ubuntu 11.04. (amd64) guest. I have a intel hd 3000 on board graphics card.

This also worked for me, Ubuntu 12.04.1 LTS, Intel hd 3000, VirtualBox 4.2.2.

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