Ticket #3191 (new defect)
VirtualBox hangs after saving state of a virtual machine
|Reported by:||spectre||Owned by:|
The problem described below showed up with OpenSuSE 11 (32 and 64 bit) as guest systems, Windows XP SP3 (32 bit) as host.
After I try to save the state of a virtual machine, the progress bar goes up to 100% as usual then disappears. The virtual machine's window ("... - Sun xVM VirtualBox") still remains visible, although "grayed", as when saving was in progress.
I can try to close this window or select menu items (for example, Machine->Close) but nothing happens in each case. The mouse cursor has a "wait" form.
It may have something to do with shared clipboard support, it seems. The problem happened after I copied some text in the guest OS and pasted it several times on the guest OS again. In addition, if I disable shared clipboard supports in the settings of the virtual machine, the problem does not show up.
While the VirtualBox's window hangs, clipboard is not working on the host OS as well: copying has no effect although no error message is displayed.
After I kill VirtualBox's processes, the clipboard starts working again on the host system. The state of the guest OS seems to be saved: looks like it can be restored successfully then.
I have attached the log of a session that ended up with that problem.
According to the information provided by Process Explorer, when the problem occurs, one of the threads of the process VirtualBox.exe hangs with state "Wait:Executive"
Unfortunately, I am unable to copy & paste the stack for this thread for obvious reasons.