VirtualBox

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Ticket Resolution Summary Owner Reporter
#6584 obsolete Corrupted YUV Output ironduck
Description

I have a multimedia application that uses a YUV overlay to display video frames from a server. On a Windows XP guest VM on a Mac OS X host, the YUV output does not update correctly, and when I force an update by resizing the window, the picture is corrupted - sometimes totally distorted, and always inverted.

http://forums.virtualbox.org/viewtopic.php?f=2&t=29647

#6586 obsolete linux loopback mounted disk image != actual hard disk image (linux loop devices) 6502cpu
Description

I use loopback devices to create disk image files for development (/dev/loop0 for example). If I create a _filesystem_ only on my loop device, virtualbox can boot from it. For example:

dd if=/dev/zero of=diskimage bs=1M count=128 losetup /dev/loop0 mkfs.msdos /dev/loop0 syslinux -s /dev/loop0

(assuming you have a virtualbox disk image file describing loop0).

If I instead however, create a _partiton_, with a filesystem on the partition, I cannot boot for some reason. For example, I would use this process to create a compact flash which I could then boot from either in a real device or with QEMU:

dd if=/dev/zero of=/dev/sdc bs=1M count=128 fdisk /dev/sdc (create a single partition, sdc1, msdos fat16) mkfs.msdos /dev/sdc1 syslinux -s /dev/sdc1

if I use: dd if=/dev/sdc bs=1M of=myimage and then losetup /dev/loop0 myimage

and boot virtualbox with that loopdevice .vdi, it doesn't boot. BUT, qemu has no trouble:

qemu -hda myimage /dev/zero

This small size disk does have 32/sectors per track and not 63 that most others have. Otherwise I can't see how it would be choking since virtualbox otherwise should be insensitive to the 'type' of device (/dev/sd instead of /dev/loop).

#6594 obsolete VirtualBox GUI causes bad interaction with wacom tablet Richard Barr
Description

Opening the VirtualBox GUI causes the tablet's cursor window to only cover a fraction of the screen. This carries over into all of Vbox's virtual machines as well. Alt+tabbing away from Vbox allows the cursor to once again function properly.

Host os: Windows 7 Professional x86-64 Virtualbox 3.1.6 r59338 Tablet: Wacom ET-0405a using driver 6.14-3 (latest non-beta driver to support this tablet)

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