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Ticket Resolution Summary Owner Reporter
#11037 duplicate 32-bit guest additions incompatible with 64-bit kernel Tails developers
Description

Most Linux distributions support running a 32-bit userland with an amd64 kernel. Unfortunately, VirtualBox Guest Additions choke on such environment.

The kernel output messages like the following:

[   24.433817] ioctl32(VBoxService:1934): Unknown cmd fd(3) cmd(c08c5610){t:'V';sz:140} arg(ffd3e804) on /dev/vboxguest

And a bunch of others from Xorg.

This could look like a niche problem, but Tails is a live system and for maximum compatibility we ship a 32-bit userland. Shipping a 32-bit kernel (for older computers) and a 64-bit kernel for newer systems is a good compatibility/memory access compromise. Unfortunately, we also advertise VirtualBox support and thus this bug currently prevents us from shipping a 64-bit kernel.

#11783 obsolete 32-bit guests crash inside VMware VM (regression in 4.2.8) protomouse
Description

I am unable to install 32-bit Linux guests in VirtualBox running on OS X 10.8.3 in a VMware Fusion 5.0.3 VM with VT-x passthrough. VMware Fusion is running on OS X 10.8.3 on a Core i7 MacBook Pro.

  • The Debian Wheezy netinst CD crashes after an install method (graphical, expert etc.) has been selected (at Decompressing Linux...).
  • My VirtualBox VM is running with default settings.
  • Disabling VT-x acceleration in VirtualBox makes the error go away.
  • 64-bit guests run with VT-x acceleration without issues.
  • This used to work in 4.2.6, but is failing from 4.2.8 onwards.

I have attached logs from 4.2.6 (functioning) and 4.2.12 (failing). Please let me know if there's anything else you want me to test. Thanks for your time!

#15231 worksforme 32/64 bit bug Vaargk
Description

when installing virtual box on a 64 bit system it shows only 32bit operation systems. When I repair the installation but dont restart the computer Virtual box shows 64 bit operating systems too. After restarting the computer it shows again only 32bit operating systems.

operating system: 64bit win10 home AMD A6-5200 APU with Radeon HD Graphics 2.00 GHz RAM 4,00GB

Other people with this problem (please read the comments): http://www.fixedbyvonnie.com/2014/11/virtualbox-showing-32-bit-guest-versions-64-bit-host-os/

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