virtualbox.org

I have not been able to locate the cause of lockups of both virtual machine and VB Manager other than an external USB DVD-RW Drive being mounted in the VM. It does not always happen and I have been able to write and access DVDs with Dolphin, K3b, MC etc.. When it does happen I have had to kill all virtualbox processes on Windows 7 host or sometimes just the VM.

I should add that I have been running kernel 3.6.11-3.fc18.x86_64, I just downloaded 3.7.1-2 kernel. If guest additions modules build I'll see if it makes a difference.

Guest Additions 4.2.6 will not build on Fedora 18 kernel-3.7.1-2-x86_64

Fedora bug. https://bugzilla.redhat.com/show_bug.cgi?id=892373

Delete the empty file as indicated in the bug report and run # /etc/init.d/vboxadd setup.

Thanks, good call.

So I guess I can rule out the kernel because I am still getting system freezes.

When it locks up I have to kill it from Windows so not much is logged.

These are the last messages before it froze.

Jan 8 12:11:51 chaos kernel: [ 6540.808656] usb 1-1: Product: MT1807
Jan 8 12:11:51 chaos kernel: [ 6540.808659] usb 1-1: Manufacturer: MediaTek Inc
Jan 8 12:11:51 chaos kernel: [ 6540.808662] usb 1-1: SerialNumber: KTP25QH4437
Jan 8 12:11:51 chaos mtp-probe: checking bus 1, device 2: "/sys/devices/pci0000:00/0000:00:0b.0/usb1/1-1"
Jan 8 12:11:51 chaos mtp-probe: bus: 1, device: 2 was not an MTP device
Jan 8 12:11:51 chaos kernel: [ 6540.900588] Initializing USB Mass Storage driver...
Jan 8 12:11:51 chaos kernel: [ 6540.900955] scsi4 : usb-storage 1-1:1.0
Jan 8 12:11:51 chaos kernel: [ 6540.901250] usbcore: registered new interface driver usb-storage
Jan 8 12:11:51 chaos kernel: [ 6540.901252] USB Mass Storage support registered.
Jan 8 12:11:52 chaos kernel: [ 6541.950985] scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM GP40NB40 1.00 PQ: 0 ANSI: 0
Jan 8 12:11:53 chaos kernel: [ 6541.990609] sr1: scsi3-mmc drive: 31x/62x writer dvd-ram cd/rw xa/form2 cdda tray
Jan 8 12:11:53 chaos kernel: [ 6541.991505] sr 4:0:0:0: Attached scsi generic sg3 type 5
Jan 8 12:12:04 chaos udisksd[1300]: Mounted /dev/sr1 at /run/media/josh/chaos_blends on behalf of uid 1000
Jan 8 12:18:17 chaos udisksd[1300]: Cleaning up mount point /run/media/josh/chaos_blends (device 11:1 is not mounted)
Jan 8 12:18:17 chaos udisksd[1300]: Unmounted /dev/sr1 on behalf of uid 1000
Jan 8 12:18:19 chaos kernel: [ 6928.800652] warning: `growisofs' uses 32-bit capabilities (legacy support in use)

Unfortunately I don't have an answer for your freeze. I know burning images to a CD/DVD drive that is mounted on the host from the guest works, but I have never tried to do so on a USB burner. I suspect that is where the issue really resides. Timing is critical on VBox USB.

Only place you can hopefully get help with this is bugtracker
It would also help if you can post the ticket number here so other can see the progress, add information, or see the final results.

The funny thing about it is burning works fine I would think that if it was a timing issue that would fail.

Anyway, I'll wait until Fedora 18 is released and see if the problem persists before filing a bug.