VirtualBox 5.1.4

virtualbox

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

Some of the features of VirtualBox are:

Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox.
Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers.

Version 5.1.4 is a maintenance release. The following items were fixed and/or added:

GUI: show actual VM uptime in the session information window
Audio: re-enabled speakers for Mac OS X guests (5.1.0 regression; bug #15611)
Audio: fixed crashes under certain conditions
USB: fixed a hang under certain conditions
USB: fixed a hanging guest under certain conditions (bug #15747)
PIIX4: implemented dummy SMBus controller to prevent annoying Linux kernel warnings about uninitialized SMBus base address (bug #9517)
NVMe: several fixes to improve stability, fixed a crash while saving a VM state
VMDK: Fixed an issue creating fixed size images with certain sizes and the Split2G option enabled (bug #15748)
VHDX: fixed cloning images with VBoxManage clonehd (bug #14288)
Storage: Fixed broken bandwidth limitation when the limit is very low (bug #14982)
EFI: fixed sending debug messages in the EFI firmware if a serial port is enabled (bug #12161)
OVF: when importing appliances, make sure that the version of the embedded VirtualBox-specific settings is processed, to get the default settings handling right
VBoxManage: Don't try to set the medium type if there is no change (bug #13850)
Linux installer: fixed some scripting issues (bugs #15701 and #15702)
Linux installer: fixed a path issue on certain Linux distributions (bug #15717)
Windows hosts: fixed corrupted mouse pointers with some Linux and Solaris guests (bug #15665)
Linux Additions: made the video driver work on 32-bit guests with large video memory sizes (bug #15621)
Linux Additions: made the video driver work on kernel 4.7 and later (bug #15769)
Linux Additions: converted a failure message to an informational one when drivers could not be stopped during upgrade (bug #15692)
Linux Additions: made the video driver work around an X server bug which cause screen refresh to stop (bug #15511)
Windows Additions: auto-resizing fixes for Windows 10 guests (bug #15257)
Windows Additions: fixed VBoxTray problems with Windows 2000 (bug #15661)