VirtualBox

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Ticket Resolution Summary Owner Reporter
#521 wontfix shutdown of a VM with ALSA sound backend freezes host (Linux 2.6.11) larsf
Description

I have an IBM xSeries with 2 CPUs à 2,4GHz with Hyper-Threading (makes 4 virtual CPUs à 2,4GHz) and 2 GB RAM running Ubuntu Feisty (7.04) as host system.

Running three VMs via commands like "nohup VBoxVRDP -startvm sles10-node1 > /home/virtualbox/Machines/sles10-node1/Logs/nohup.log 2>&1 &" works without problems. Adding and starting a fourth node leads to the problem, that the kernel of the host completely freezes when trying to poweroff (VBoxManage controlvm sles10-node1 poweroff) or kill (kill -9 <pid>) one of the four processes for the four running VMs. On the console the following message appears: "BUG: soft lock detected for CPU#3".

Passing the parameter "nostflock" to the kernel via the menu.lst in /boot/grub/ was tried, but with the same result! :/ Disabling Hyper-Threading in the BIOS didn't improve the issue either.

A memtest86+ will run this night, but we don't really think the RAM is broken or something, but you never know... If the test does not indicate any errors tomorrow morning, the issue still remains unsolved... :(

The strange thing is that this issue only occurs when running 4 VMs (with 3 all works fine) and only when trying to poweroff or kill one of them. Until then, they run happily!

An extract of /var/log/messages is attached...

#522 obsolete Windows XP cannot boot if burning DVD in host steqve
Description

If I record a DVD (not tested CD) in VBox 1.4.0 I cannot boot my windows guests. It seems that windows tries to read information from the CD and there must be some kind of dead lock on the drive, cause the recording will halt and hang.

If I shutdown the guest, the host vill not recover from this error and the DVD never be completely written. The eject button on DVD drive will not work cause the entire drive is locked up. A reboot of the computer is necessary.

I have not tried to start a recording after windows has started! I assume that the same problem will arise.

#523 fixed Bluescreen 7E caused by VBoxUSBFlt.sys tpre
Description

I use VirtualBox 1.3.8 in an IBM Thinkpad T40p with a Docking-Station. Attached to this Docking-Station is an Lexmark X340 MFP. Everytime i undock an dock back my Notebook to the Docking-Station i get a bluescreen when i switch on the USB-attached Lexmark-Printer just when the Printer tells Windows his ready-state. After analysing the minidump with WinDbg i found out that VirtualBox was the cause. Attached to this Ticket is the output from WinDbg. I hope this helps!

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