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Old 04-21-2014, 07:49 PM   #1
AlexBB
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Ubuntu Guest freezes up


Hi there.

My environment is Windows 7==>Oracle Virtual Box==>Ubuntu 12.04. The whole system worked well yesterday all day. This evening I restarted Win7, opened the Virtual Box and clicked on START. Ubuntu VM showed up but my mouse cursor froze. Thus I could not move it to the VM. Somehow some changes in the VM could be initiated. If I click on Ctrl-Alt-Del no usual choice of 5 or 6 options on a blue screen shows up where I could have started the Task Manager, no, this does not get to it. Instead certain things happen in Ubuntu like the system wants me to sign in and I can do it with my keyboard, etc.

Obviously I cannot work this way. It happened 3 times already. What is going on?

Thanks, - Alex
 
Old 04-22-2014, 01:43 PM   #2
linxpatrick
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I use the same setup as you and it has been working for over a year. You didn't say what version of VirtualBox you are running (which might help if anyone has been burned by a particular version) but every once in a while there is a bug introduced in VirtualBox that will cause odd behaviors. I am running v4.3.10 successfully. You can try upgrading or downgrading VirtualBox by a minor version or two to see what happens.

Since CTRL-ALT-DEL doesn't work on the host it sounds to me like the mouse has been captured by the guest but the mouse driver on the guest is not working correctly. Did you install guest additions before/after the problem started? Does the host key return mouse control back to the guest?

One day, I was trying to attach a USB drive to a guest and accidentally attached my USB mouse. This happened twice. The fix was simply to unplug the mouse for a few seconds. When I plugged it in it was no longer attached to the guest.

Hope some of these suggestions will get you working again.
 
Old 04-23-2014, 05:09 PM   #3
AlexBB
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Linxpatrick thank you. I am at work now and my VirtualBox is home. I think I have the latest version but I have to double check on that. Yes, the additions have been installed. The mouse cursor freezes solid and never moves. I went through all settings of the VB thinking perhaps I changed some parameter unwillingly but everything seemed to be OK. I had to crush the machine by pressing the start button physically every time because nothing worked in the host. Trying to upgrade/downgrade it is a great idea and I will try it. I may comment more later. Thank you very much. - Alex

Last edited by AlexBB; 04-23-2014 at 08:37 PM.
 
Old 04-26-2014, 03:37 PM   #4
AlexBB
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Well, nothing worked so far. I restored the system to a date which certainly predated the time when the freeze first happened. Then I "repaired" or reinstalled the Virtual Box. Nothing worked. So, I decided to create a second Ubuntu VM. Now I have it running but a lot of stuff is left on the previous machine. How can I move this stuff from the old machine to the new one given the fact that if I start the first VM everything freezes and I cannot use the host, I cannot use the mouse, nothing? Thanks, - Alex
 
Old 04-30-2014, 03:42 PM   #5
linxpatrick
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Hold the left shift key down when starting the freezing VM. When you get the GRUB menu, boot into the recovery console. From there you can try fixing broken packages, booting into low graphics mode or boot to a terminal.

If you can get it to start without freezing the host, you can looking into using a shared drive. With a shared drive you can copy files into it and then copy them into the new VM.
 
Old 04-30-2014, 07:58 PM   #6
AlexBB
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linxpatrick thank you, however, your advice came too late. I destroyed (removed) that VM and now am trying to set up another one but I will keep this advice in minds. - Alex
 
Old 04-30-2014, 08:33 PM   #7
AlexBB
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What I've decided to do in the future is to make a copy of the VM every time I end a session because my previous VM died after I restarted it next day. Something happened overnight.

Last edited by AlexBB; 04-30-2014 at 08:35 PM.
 
  


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