I had Ubuntu 10.4 working fine with the previous version of VirtualBox on a Windows 7 host.

Then I upgraded to VirtualBox to 3.2.10, reinstalled the Linux Guest Additions, and now I am limited to 1008 x 584 resolution in full-screen mode! I have reinstalled Guest Additions and rebooted the guest OS several times.

  • Is the mouse captured and released as normal when guest additions are installed? i.e. are guest additions installed for the current kernel? Have you tried seamless mode (host-l)?
    – Jonathon
    Oct 25, 2010 at 1:26
  • @Jonathon, the mouse capture and release works as if guest additions are installed. Disk sharing with the host OS also works. Seamless mode works. So I guess this proves that guest additions is installed. Just Full-Screen isn't working!
    – SpashHit
    Oct 25, 2010 at 2:07

2 Answers 2


Virtualbox 3.2.12 has been out for a while, maybe that will fix your issue


http://ubuntuforums.org/showthread.php?t=1153437 This worked for me.


I spoke too soon. After a "sleep" it changed to a low resolution again. And now that I think about it, I really would prefer that Guest Additions would detect things properly instead of me having to edit the xorg.conf myself, mainly because it can probably make it more ideal than what I copy and paste from a web forum. Any chance of fixing Guest Additions? Or should I try upgrading to Ubuntu 10.10?

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