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Ticket Resolution Summary Owner Reporter
#10669 worksforme Critical error during shutdown of Ubuntu 12.04 (64 bit) guest on W7 64 bit host Nick Crowdy
Description

VBox reported a critical error.

The guest, Ubuntu 12.04 (64 bit) running Alfresco Community Edition 4.0d, was being shutdown using /sbin/shutdown -h now.

Log and image files attached.

#12102 duplicate Critical error from HostMemoryLow while running Ubuntu on Windows longtalker
Description

Hello everyone,

I use Virtualbox 4.2.12 to run a brain imaging software (Freesurfer) on guest OS Ubuntu, my computer's host OS being Win XP SP3 32-bit.

About 8 hours into a task started at the command line, which was supposed to run for a few days, I got a dialog from "Guru meditation" saying that "a critical erro has occurred while running the VM and the machine execution has been stopped". I restarted the VM session and relaunched the command inside Ubuntu, with the same effect. Restarting my PC and repeating all steps also didn't help.

VBox.log contains, towards the end, the line "VM: Raising runtime error 'HostMemoryLow' (fFlags=0x2)" which suggests a memory issue. My computer has 4GB RAM, and about 2500 MB were made available to the guest OS, an amount deemed sufficient by the software that I'm using inside Ubuntu (Freesurfer). At the suggestion of a previous thread on the forum that seemed to be describing the same problem, I reduced the Base Memory to 1320 MB, but that didn't help either; in fact, the whole terminal window disappeared soon after my command had been launched from there, even though the VM itself had not crashed.

Both virtualization options are enabled from the VM's System/Acceleration settings.

Given the number of threads with "HostMemoryLow" problems (none of which seem to have a clear solution), I'm assuming this is a VB problem, rather than my PC having too little memory (or making too little of it available to the guest OS). Can anyone suggest any workarounds?

Many thanks indeed!

#16412 duplicate Critical error has occurred running VM after upgrade to 5.1.14 jac1416
Description

Was running Windows XP VM as late as three days ago with Virtual Box version 5.0.28. Received a notice that an upgrade is available. Downloaded and installed 5.1.14 over existing installation. Now the VM will not start, critical guru error. What can be done? Host running Windows 10 Pro 1607 build 14393.693.

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