VirtualBox Freezing

Discussions related to using VirtualBox on Linux hosts.

VirtualBox Freezing

Postby bph » 14. Jun 2012, 09:45

I have an odd problem runnign VirtualBox

I had been using it successfully for several weeks running Windows7 64 bti VM on Ubuntu 11.10 Host

I then upgraded Host OS to Ubuntu 12.04 and broke VirtualBox I think due to kernel mismatch

My solution was to renistall the 12.04 (precise) .deb package from the virtualbox download site

This worked *during* the current session, i.e. while I was logged in to Ubuntu

However, closing down the machine then restarting ubuntu and then starting virtualbox was causing my machine to freeze completely

I then deleted the Windows VM uninstalled VirtualBox and reinstalled VirtualBox via the ubuntu software manager

I then reinstalled the Windows VM

Again, all worked fine *during* that session, but now, after closing down and rebooting, virtualbox freezes the machine every time

Has anyone experienced any similiar problems to this?
Posts: 3
Joined: 14. Jun 2012, 09:37

Re: VirtualBox Freezing

Postby bph » 14. Jun 2012, 10:12

having done a little more digging, this bug seems to be very similar to what I am experiencing:

Ticket #10528 (new defect) <- sorry not allowed to post urls yet...

a further question would be how I can implement the fix? Does this imply I have to rebuild virtualbox from the latest svn src to fix the problem?

So far I have just been using the precompiled binaries from the download section, e.g. the precise .deb file
Posts: 3
Joined: 14. Jun 2012, 09:37

Re: VirtualBox Freezing

Postby bph » 14. Jun 2012, 11:20

for now I have added:

nmi_watchdog=0 nowatchdog

to /etc/defult/grub, e.g.

Code: Select all   Expand viewCollapse view
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
# Uncomment for original line pre-virtualbox bug workaround (bph 20120614)
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nmi_watchdog=0 nowatchdog"

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)

# Uncomment to disable graphical terminal (grub-pc only)

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

# Uncomment to disable generation of recovery mode menu entries

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

then re-ran update-grub, e.g.

Code: Select all   Expand viewCollapse view
$ sudo update-grub

touch-wood - this *seems* to have fixed the problem
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Joined: 14. Jun 2012, 09:37

Re: VirtualBox Freezing

Postby michaln » 14. Jun 2012, 11:28

I'll post the ticket URL here:

Yes, that certainly sounds like what you ran into, and the workaround given in the ticket should apply.
Oracle Corporation
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Joined: 19. Dec 2007, 15:45
Primary OS: MS Windows 7
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Re: VirtualBox Freezing

Postby mwildam » 16. Jun 2012, 12:34

Thank you sooo much!
The bug is already fixed by the way in SVN (so maybe fixed with next release of VirtualBox).
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Joined: 3. Mar 2009, 15:09

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