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Ticket Resolution Summary Owner Reporter
#18978 duplicate All VM's on VirtualBox goes to "Guru Meditation state " when KVM(virt-manager) VM's are 'power on' aeronwin
Description

Hello Team

I am running a host pc ----> Linux GS-4184 4.15.0-64-generic #73-Ubuntu SMP Thu Sep 12 13:16:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

I have created three VM's on Virtualbox names as Client1,Client2,Client3 each 4GB RAM and less than 10GB Memory all are Ubuntu VM's which were running properly before installing KVM. I poweroff the VM's from Virtualbox and installed KVM(virt-manager) and created 3 VM's Database,Server,MyServer all were ubuntu VM's 3GB RAM and less than 10GB memory.But as soon as i power on the VM's on KVM my virtualbox VM's goes to "guru meditation state" whenn i click on ignore the get automatically poweroff.At a time am able to run only either Virtualbox VM's or KVM' VM's but i want to run it simultaneously(Because i want to create a VM as a server in KVM which should be in running state so that client VM's on KVM should request it for service ) But i dnt know it is possible or not to run this kvm and VB simultaneously if not then why? If it is possible to use KVM and Virtualbox simultaneously then please give me the solution to resolve this issue.

#18974 invalid How to understand and debug from a VirtualBox log file? ravi199777
Description

I have followed [url=https://www.youtube.com/channel/UCQdZltW7bh1ta-_nCH7LWYw/videos]this tutorialurl for developing an operating system. I am using Windows 10 as my host sytem and used wsl for compiling. But my VM fails as soon as I enable interrupts.

[url=https://github.com/ravi1997/code/blob/master/VM%20log]This is the log fileurl of the VM that is output, but I cannot understand it. I am pretty naive with VirtualBox. Can someone explain any possible error you see?

[url=https://github.com/ravi1997/myos]Here is the codeurl of the Os. I just have changed the structure I believe. Rest code in execution point of view is same as shown in video series.

#18972 fixed Application windows disappear when switching to Seamless Mode 4til7
Description

When I switch to seamless mode, all application windows disappear. Problem experienced under 6.02. Upgraded to 6.12. The problem still exists.

This may be an ongoing issue. A search of bug track found reports of seamless mode not working (or not working well, e.g. https://www.virtualbox.org/ticket/15318). The ones reviewed were not specific about the issues experienced.

Ubuntu 18.04

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