[vbox-dev] Regarding about the Pause function in Virtualbox SDK

Nikolay Igotti nikolay.igotti at oracle.com
Mon Jan 10 02:40:06 PST 2011


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On 1/10/11 1:29 PM, John Lee wrote:
> On 2011-01-10 오후 7:20, Frank Mehnert wrote:
>> On Monday 10 January 2011 11:14:36 John Lee wrote:
>>> On 2011-01-10 오후 7:07, Frank Mehnert wrote:
>>>> On Monday 10 January 2011 10:55:49 John Lee wrote:
>>>>> On 2011-01-10 오후 6:32, Frank Mehnert wrote:
>>>>>> John,
>>>>>> On Monday 10 January 2011 10:04:41 John Lee wrote:
>>>>>>> On 2011-01-10 오후 5:45, Klaus Espenlaub wrote:
>>>>>>>> On 10.01.2011 08:25, John Lee wrote:
>>>>>>>>> Hello,
>>>>>>>>> I'm having a problem with the Pause function within the 
>>>>>>>>> Virtualbox
>>>>>>>>> SDK 4.0.
>>>>>>>>> I'm using the same code that I used to test the VM via Virtualbox
>>>>>>>>> SDK 3.2 but it seems like I'm having a trouble with the
>>>>>>>>> Pause/PowerDown with the new SDK.
>>>>>>>>> The problem I'm facing is that whenever I call either
>>>>>>>>> Pause/PowerDown while the VM is running, the application that I'm
>>>>>>>>> running presents the seg fault message.
>>>>>> Please have a look at the VBox.log file. Do you have sound 
>>>>>> enabled for
>>>>>> that VM? Does the sound backend initialize properly or do you see 
>>>>>> any
>>>>>> warnings regarding sound during initialization? You could also 
>>>>>> disable
>>>>>> sound for the VM and try again. There is a known 4.0 bug which could
>>>>>> lead to a SEGFAULT under these conditions.
>>>>> I have disabled the sound and vice versa but somehow that didn't 
>>>>> solve
>>>>> the problem. I have tried to looked up the VBox.log file but somehow
>>>>> could not locate the file.
>>>>> I have also disable the virtualization acceleration in case there 
>>>>> is a
>>>>> problem but still the problem remains unsolvable.
>>>>> Is there any possible way to fix the problem?
>>>> The VBox.log file can be displayed by opening the VM manager window 
>>>> and
>>>> choosing Machine / Show Log ...
>>>> Does the VM also crash when you pause the VM using the GUI?
>>> No, the VM does not crash. Only the source code displays the seg fault
>>> message.
>>> When I use the GUI, the VM pause/turns off normally. However, by using
>>> the SDK, the problem is still remains.
>> Hmm, but you are using the C binding, do you? In that case that might
>> be the reason because AFAIR the C bindings are kind of orphaned. Could
>> you check if the same crash happens if you are using the C++ bindings?
>> Kind regards,
>> Frank
> Yes, I have used the cbinding.
> I tried to compile the c++ code but it displays the message 
> "VBoxXPCom.so: No such file or directory." But the specific file is 
> located at /usr/lib/virtualbox in my machine.
> hum, I'm sorry but is it possible that you can help me out to solve 
> this problem?
> Thank you.
> Sincerely,
> John Lee
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