esSJae's Virtualization Blog

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Posts Tagged ‘vbox’

VirtualBox 5.1.16 Maintenance Release

Posted by essjae on March 8, 2017

Download here: https://www.virtualbox.org/wiki/Downloads

This is a maintenance release.

The following items were fixed and/or added: Changelog https://www.virtualbox.org/wiki/Changelog

  • VMM: don’t access the MSR_IA32_SMM_MONITOR_CTL MSR if dual-monitor treatment is not available (KVM workaround, bug #14965)
  • VMM: another fix for handling certain MSRs on ancient CPUs without VT-x support for MSR bitmaps
  • VMM: fixed VERR_SSM_LOAD_CPUID_MISMATCH errors when restoring a saved state with SMP guests on hosts without the CPUID/HTT bit set (bug #16428)
  • VMM: fixed a bug in call gate emulation
  • VMM: FWAIT instruction fix
  • VMM: fixed a sporadic guest hang under certain conditions
  • GUI: hide the mini-toolbar from the taskbar and the pager on certain X11 hosts
  • GUI: better error handling on the global settings / network / host-only / DHCP server settings
  • GUI: fixes for full-screen with multiple screens
  • Host-only Network: fixed host-only adapter creation issue preventing VirtualBox installation on Windows 10 hosts (bug #16379)
  • NAT network: fixed two potential crashes in the DHCP server
  • ICH9: fixed incorrect initialization of the primary bus for PCI bridges (5.1.14 regression)
  • Storage: LsiLogic fix for Windows 10
  • USB: fixed not being able to attach certain USB devices having invalid characters in the device strings (5.0.18 regression; bug #15956)
  • USB: several fixes for the USB/IP support (bug #16462)
  • VBoxSVC: fixed another crash during shutdown under rare circumstances
  • VBoxSVC: fixed a stack overflow on (Windows debug builds only; bug #16409)
  • OVF: when importing an appliance handle more than 10 network adapters if the OVA was created by VirtualBox (bug #16401)
  • OVF: fixes for exporting and importing appliances with many disks (bug #16402)
  • VBoxManage: fixed regression with modifyhd –resize (bug #16311)
  • rdesktop-vrdp: source code tarball fixes
  • Linux Installers: do not rebuild kernel modules unnecessarily (bug #16408)
  • Linux hosts: added an action for opening the VM manager window to the .desktop file
  • Linux hosts / guests: Linux 4.11 compile fixes (bug #16506)
  • Linux Additions: added vboxsf FS modules alias (bug #16404)
  • Linux Additions: fix for the shared folders kernel module to compile on Linux 4.10
  • Linux Additions: properly install the Linux kernel module override rule on distributions without /etc/depmod.d
  • Windows Additions: fixed a crash with recent Windows 10 builds if 3D is disabled (bug #15973)
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VirtualBox 5.1.6 Available

Posted by essjae on September 13, 2016

VirtualBox 5.1.6 (released 2016-09-12)

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

  • GUI: fixed issue with opening ‘.vbox’ files and it’s aliases
  • GUI: keyboard grabbing fixes (bugs #15771 and #15745)
  • GUI: fix for passing through Ctrl + mouse-click (Mac OS X hosts only; bug #15714)
  • GUI: fixed automatic deletion of extension pack files (bugs #11352 and #14742)
  • USB: fixed showing unknown device instead of the manufacturer or product description under certain circumstances (5.1.0 regression; bug #15764)
  • XHCI: another fix for a hanging guest under certain conditions as result of the fix for bug #15747, this time for Windows 7 guests
  • Serial: fixed high CPU usage with certain USB to serial converters on Linux hosts (bug #7796)
  • Storage: fixed attaching stream optimized VMDK images (bug #14764)
  • Storage: reject image variants which are unsupported by the backend (bug #7227)
  • Storage: fixed loading saved states created with VirtualBox 5.0.10 and older when using a SCSI controller (bug #15865)
  • Storage: fixed broken NVMe emulation if the host I/O cache setting is enabled
  • Storage: fixed using multiple NVMe controllers if ICH9 is used
  • NVMe: fixed a crash during reset which could happen under certain circumstances
  • Audio: fixed microphone input (5.1.2 regression; bugs #14386 and #15802)
  • Audio: fixed crashes under certain conditions (5.1.0 regression; bug #15887 and others)
  • Audio: fixed recording with the ALSA backend (5.1 regression)
  • Audio: fixed stream access mode with OSS backend (5.1 regression, thanks to Jung-uk Kim)
  • E1000: do also return masked bits when reading the ICR register, this fixes booting from iPXE (5.1.2 regression; bug #15846)
  • BIOS: fixed 4bpp scanline calculation (bug #15787)
  • API: relax the check for the version attribute in OVF/OVA appliances (bug #15856)
  • Windows hosts: fixed crashes when terminating the VM selector or other VBox COM clients (bug #15726 and others)
  • Linux Installer: fixed path to the documentation in .rpm packages (5.1.0 regression)
  • Linux Installer: fixed the vboxdrv.sh script to prevent an SELinux complaint (bug #15816)
  • Linux hosts: don’t use 32-bit legacy capabilities
  • Linux Additions: Linux 4.8 fix for the kernel display driver (bugs #15890 and #15896)
  • Linux Additions: don’t load the kernel modules provided by the Linux distribution but load the kernel modules from the official Guest Additions package instead (bug #15324)
  • Linux Additions: fix dynamic resizing problems in recent Linux guests (bug #15875)
  • User Manual: fixed error in the VBoxManage chapter for the getextradata enumerate example (bug #15862)

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VirtualBox 5.0.16 Maintenance Release

Posted by essjae on March 14, 2016

A little late, released March 4, a maintenance release. Download.

Change log:

The following items were fixed and/or added:

  • VMM: fixed a problem which could lead to a wrong guest behavior on AMD CPUs (tickets #14831 and #15186)
  • GUI: don’t try to synchronize the HID LEDs if the VM window is not active or if it’s minimized (Windows / Mac OS X hosts only; bug #14302)
  • GUI: prevent a crash during startup under rare conditions
  • GUI: sub-menu option to disable the guest-OS type overlay in the application dock icon on Mac OS X
  • GUI: position off-screen windows to be fully visible again on relaunch
  • GUI: hide the VT-x/AMD-V checkbox if raw-mode is not supported (usually Mac OS X hosts; bug #15178)
  • PC speaker passthrough: new experimental feature, available on Linux host only
  • Audio: several fixes for Mac OS X hosts + guests
  • Audio: properly handle default audio device changes (Windows hosts)
  • USB: serveral fixes for the xHCI controller (e.g. for webcam passthrough)
  • BIOS: fixed int15/AH=83/AL=00 function (4.2.0 regression)
  • iPXE: enable the HTTP download protocol on non-Linux hosts (bug #13628)
  • Shared folders: fixed a failure to load the saved state under certain circumstances (bug #6314)
  • Guest Control: added support for (cached) Active Directory authentication in case the domain controller is not reachable (anymore)
  • Serial ports: raised the number of serial ports per VM from 2 to 4 (bug #9109)
  • Serial ports: fix for the TCP/IP backend (Windows hosts only; bug #15188)
  • SDK: make the Python webservice API binding work again (5.0 regression)
  • Seamless mode: fixed a crash under certain circumstances (bug #15106)
  • Linux hosts: fixed the /sbin/rcvboxdrv script as well as the missing shebang in two scripts (bugs #15055 and #15057)
  • Linux hosts: properly uninstall Python files installed by the .run installer
  • Windows hosts: hardening fix required for recent Windows insider builds (bug #14052)
  • Windows hosts: fixed Python installation path (bug #13131)
  • Windows hosts: support MTU larger than 2 KB with bridged networking (bug #15140)
  • Windows hosts / guests: properly sign binaries using a sha-256 certificate (bug #15054)
  • Windows Additions: fixed guest property enumeration of logged-in users
  • Windows Additions: fixed sporadical failure of the graphics driver in Windows 10 guests (bug #14409)
  • Windows Additions: under rare circumstances no mouse movement events were delivered to the guest

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VirtualBox 5.0.10 (released 2015-11-10)

Posted by essjae on November 11, 2015

5.0.10 maintenance release is now available: https://www.virtualbox.org/wiki/Downloads

Changelog:

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

  • VMM: improved support for certain Intel Atom CPUs (bug #14773)
  • VMM: system register emulation fix (5.0 regression; bug #14515)
  • GUI: fixed immediate screenshot issue (bug #14108)
  • GUI: fixed another 3D overlay window reparenting issue when the VM is switched to fullscreen mode on X11 hosts
  • GUI: fixed help index (bug #14722)
  • GUI: fixed state synchronization issue in the VM manager window when VM was paused from its runtime window
  • Audio: fixed suspending/resuming audio streams on VM pause/unpause (bug #14784)
  • Audio: properly reset AC97 audio streams, otherwise there is silence until a non-48 kHz stream is played
  • Audio: fixed a small emulation quirk of the AD1980 codec of the HDA device to make recent linux guests work (bug #14653)
  • USB: serveral fixes for the xHCI controller
  • USB: fixed a crash under certain conditions on hosts with Linux kernels older than version 3.3
  • USB: better identification of certain USB devices
  • NAT: support TCP in DNS proxy (bug #14736)
  • NAT Network: fixed sporadic crashes on Windows hosts (bug #13899)
  • API: when creating differencing images (e.g. as part of a snapshot or cloning a VM) use the same disk image variant as the parent image if possible, which means that e.g. a diff image for a VMDK image split into 2 GB files will also be split (bug #14764)
  • API: event queue handling fixes preventing loss of certain events at runtime (e.g. new webcam attached), particularly important on Mac OS X hosts
  • Webcam: passthrough fix for certain devices (Windows hosts only)
  • VBoxManage: don’t crash on snapshot restorecurrent / edit if the VM has no snapshots
  • VBoxManage: don’t crash on controlvm addencpassword (bug #14729)
  • Mac OS X hosts: use the correct kernel on certain hosts
  • Windows hosts: fixed VRDP external authentication
  • Windows hosts: allow to use a shared folder path with extended-length path prefix (5.0 regression; bug #14651)
  • Windows hosts: fix a crash in the netfilter host driver under certain conditions (bug #14799)
  • Windows host installer: documented and fixed public properties which can be used to control the installation to some extent
  • Windows host installer: fixed not starting the actual installation when showing the version information or help dialogs
  • X11 Additions: added basic support for X.Org Server 1.18 (3D requires additional fixes)

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VirtualBox 5.0 Released July 9!

Posted by essjae on July 14, 2015

VirtualBox 5.0 (released 2015-07-09)

This is a major update. The following major new features were added:

  • Paravirtualization support for Windows and Linux guests to improve time-keeping accuracy and performance (see the manual for more information)
  • Make more instruction set extensions available to the guest when running with hardware-assisted virtualization and nested paging. Among others this includes: SSE 4.1, SSE4.2, AVX, AVX-2, AES-NI, POPCNT, RDRAND and RDSEED
  • xHCI Controller to support USB 3 devices (see the manual for more information)
  • Drag and drop support (bidirectional) for Windows, Linux and Solaris guests
  • Disk image encryption (see the manual for more information)
  • VMs can now be started in separate mode. The VM process is started headless while the frontend runs as a separate process which can be terminated without stopping the VM.
  • GUI: VM guest-content scaling support (including 3D acceleration)
  • GUI: New User Interface settings page for customizing status-bar, menu-bar and guest-content scaling
  • GUI: New Encryption settings tab for customizing encryption options for disk images
  • GUI: HiDPI support including application icons and optional unscaled HiDPI output on Mac OS X (including 3D acceleration)
  • GUI: Hot-plugging support for SATA disks
  • New, modular audio architecture for providing a better abstraction of the host audio backends
  • Support for the NDIS6 networking framework on Windows (default on Vista and later)

Download here

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VirtualBox 4.3.28 Released

Posted by essjae on May 13, 2015

Download: https://www.virtualbox.org/wiki/Downloads

 

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

  • VMM: fixed a Guru Meditation when rebooting certain guests (for example Solaris doing fast reboot) by fixing the implementation for INIT IPI
  • VMM: added some information for diagnosing rare VERR_VMX_INVALID_VMXON_PTR Guru Meditations (VT-x only)
  • GUI: HID LEDs sync: prevent synchronization if VM window has no focus (Windows and Mac OS X hosts only)
  • GUI: fixed drag and drop moving the cursor between guest screens on certain hosts
  • 3D: fixed a crash on restoring the VM state on X11 hosts (bug #12737)
  • 3D: fixed a crash on Linux guest shutdown (bug #12772)
  • VRDP: fixed incompatibility with rdesktop 1.8.3
  • VRDP: fixed listening for IPv6 on some systems (bug #14038)
  • Storage: don’t crash if creating an asynchronous I/O context fails (e.g. when starting many VMs) and show a proper error message
  • Floppy: several fixes
  • Audio: improved the behavior of the volume control for the HD audio device emulation
  • USB: increase the number of supported drivers from 3 to 5 (Windows hosts only)
  • PS/2 keyboard: synchronize the LED state on VM restore (Windows and Mac OS X hosts only)
  • NAT Network: when running multiple NAT networks with multiple VMs, only stop the respective services when stopping VMs (bug #14090)
  • NAT: don’t kill UDP bindings on ICMP errors (bug #13475)
  • NAT: bandwidth limit now works properly with NAT (bug #11485)
  • BIOS: fixed the returned size value of the VBE 2.0 PMI function 0Ah (4.2.0 regression; bug #14096)
  • Guest Control: fixed parameter quoting in Windows guests (bug #13157)
  • Webcam passthrough improvements for Linux (V4L2) hosts to support more webcam models
  • API: don’t fail starting a VM with VBOX_E_INVALID_OBJECT_STATE under certain conditions (bug #13617)
  • API: be more verbose on VBOX_E_INVALID_OBJECT_STATE if a medium is attached to a running VM (bug #13560)
  • API: fixed a bug which could result in losing certain screen resize events with multi-monitor guests
  • rdesktop-vrdp: fixed path to the keymaps (bug #12066)
  • rdesktop-vrdp: switch to version 1.8.3
  • Windows hosts: more hardening fixes (e.g. bugs #14051, #14052)
  • Linux hosts: another fix for activated SMAP on Linux 3.19 and newer (Broadwell and later; bug #13961)
  • Linux hosts: Linux 4.1 compile fix (bug #14081)
  • Solaris hosts: fixed using of VNIC templates with Crossbow based bridged networking to be compatible with vanity interface names
  • Mac OS X hosts: fixed crash during VM termination under rare circumstances
  • Windows Additions/WDDM: improved video memory utilization and allow more/bigger guest screens with large resolutions (including HiDPI)
  • X11 Additions: prevent flickering when updating mouse cursor
  • Solaris Additions: fixed incorrect usage of ‘prtconf’ while installing Guest Additions (Solaris 10 only)

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VirtualBox 4.3.20 Maintenance Release

Posted by essjae on November 21, 2014

https://www.virtualbox.org/wiki/Changelog

VirtualBox 4.3.20 (released 2014-11-21)

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

  • VMM: fixed reboot hang of 32-bit Windows SMP guests (bug #13319, #13462)
  • VMM: proper Math Fault handling with certain legacy guests (bug #9042, AMD hosts)
  • VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT on older CPUs that don’t support MSR-bitmaps (VT-x only; bugs #13034, #13125, #13311, #13425, #13426, #13463, #13585)
  • GUI: fix 3D overlay window re-parenting issue when VM goes to full screen mode on X11 hosts.
  • GUI: fix occasional loss of focus in full-screen mode on X11 host systems (4.3.16 regression)
  • GUI: Mac OS X: wizards should have Cancel button (bug #12541)
  • GUI: added a global option to prevent automatic raising of the new window by mouse move with multi-screen guests (bug #8878)
  • API: accept remote display port 0 as the default RDP port (bug #8534)
  • VBoxManage: fixed crash when executing showvminfo command under certain circumstances (bug #13190)
  • ACPI: fixed occasional Guru Meditations in ACPI timer code (4.3.18 regression; bug #13521)
  • EFI: improved performance of IDE disk access
  • EFI: fixed a bug in the EFI video driver which prevented Windows to boot in UEFI mode (bug #12022)
  • EFI: properly announce the amount of RAM for big VMs (bugs #11103 and #13211)
  • Storage: fixed a crash under certain circumstances when a medium was ejected from a drive attached to the SATA controller without inserting a new medium before pausing or closing the VM (4.3.16 regression)
  • Storage: fixed an interrupt acknowledge issue causing hanging guests or slower I/O (4.3.18 regression)
  • Storage: fixed broken resume after the VM was suspended due to a full disk if host I/O caching is used
  • Storage: fixed a Guru Meditation under certain conditions when using the DevLsiLogic controller with VMs running in raw mode (4.3 regression; bugs #12254, #12655, #12709, #12774, #12886)
  • Guest Control: fixed a bug which might lead to a crash during recursive copy
  • SDK: Java COM bindings fixes
  • iPXE: enable the HTTP download protocol (bug #13628)
  • Runtime: do not use a fixed stack size creating temporary threads during initialization (bug #13038)
  • Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting (4.3.14 regression; bug #13187)
  • Windows hosts: fixed DirectSound host audio failure under certain conditions (bug #13418)
  • Windows hosts: fixed additional cases of 4.3.14 regression whereby AltGr stopped working for some people (bug #13216)
  • Windows Additions: preserve guest monitor layout when resizing Windows 7 or newer guests
  • Linux Additions: Linux 3.18 compile fixes (bug #13515)

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VirtualBox 4.3.6 Released

Posted by essjae on December 26, 2013

https://www.virtualbox.org/wiki/Downloads

VirtualBox 4.3.6 (released 2013-12-18)

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

  • VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT caused by VMCB caching with nested paging on certain AMD CPUs (bug #12451)
  • VMM: fixed a Guru Meditation VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE while intercepting debug exceptions (VT-x only; bug #12410)
  • VMM: fixed a Guru Meditation VERR_SVM_UNEXPECTED_EXIT while intercepting debug register accesses (AMD-V only; bug #12481)
  • VMM: fixed a VERR_SSM_STRUCTURE_MAGIC error when trying to load a saved state made with VBox 4.3.4 when VT-x/AMD-V is disabled. Unfortunately, VBox 4.3.4 produced broken saved states for this configuration so you have to discard these states (bug #12414)
  • VMM: added a few more MSRs to the whitelist required by certain guests (bug #12245)
  • GUI: fixed deleting of inaccessible VMs (4.3 regression, bug #12205)
  • GUI: fixed warnings in VM settings / number of guest processors (bug #12480)
  • Main: don’t automatically enable 64-bit guests on 64-bit hosts if VT-x/AMD-V is not available (bug #12424)
  • Main: always expose the DMI memory information to Windows 2012 guests (bug #12017)
  • Main: fixed occasional crashes on guest display resolution change (bug #7063)
  • Main: fixed reporting back temporary name when calling IGuestSession::DirectoryCreateTemp() (bug #12498)
  • API: fix for a hang when launching a GUI VM through the API, which crashes due to GUI unavailability
  • Storage: fix for BLKCACHE_IOERR runtime errors under rare circumstances (bug #11030)
  • Network: allow to start more than 5 PCNet instances (bug #12426)
  • E1000: if the cable was disconnected before the guest initialized the device, the link status was not properly set to ‘down’ after the initialization completed despite the fact that there was no connection
  • 3D support: fixed offset of guest 3D image elements (Mac OS X Retina hosts only; bug #11021)
  • Solaris hosts: fixed accessing the host driver from non-global zones (4.3 regression, bug #12271)

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VirtualBox 4.3.4 Released Nov 29

Posted by essjae on December 5, 2013

A little late on this one.

VirtualBox 4.3.4 (released 2013-11-29)
https://www.virtualbox.org/wiki/Changelog
This is a maintenance release. The following items were fixed and/or added:

  • VMM: fix for a bug in the Local APIC emulation causing a BSOD when booting certain guests (4.3.0 regression; bug #12240)
  • VMM: fixed loading of saved states if VT-x/AMD-V was disabled (4.3.2 regression; bug #12291)
  • VMM: fixed single-stepping inside the guest for certain instructions (VT-x only; bug #10947)
  • VMM: fixed a performance issue involving APIC accesses after rebooting a VM (4.3.0 regression; VT-x only; bug #12296)
  • VMM: fixed TPR patching to be enabled for 32-bit guests even when the chosen guest type is 64-bit (4.3.0 regression; AMD-V only)
  • VMM: fixed occasional VINF_EM_TRIPLE_FAULT errors on hosts without the unrestricted guest execution feature (bug #12198)
  • GUI: don’t bother the user with the BPP warning if no Guest Additions are installed
  • GUI: fixed machine-window paint artifacts on VM reboot / guest-screen resize
  • GUI: make sure the assigned license and description are attached to the exported appliance
  • GUI: fixed bugs in close VM action restrictions handling (bug #12333)
  • GUI: fixed incorrect wizards text colors for some unusual look and feel styles (bug #11743)
  • GUI: should restore seamless mode as soon as possible after VM reboot or shutdown
  • GUI: fixes for medium enumeration
  • GUI: the OS X hot corners were not accessible while a VirtualBox VM is running (Mac OS X hosts only; bug #4139)
  • GUI: fixed an old bug which bared the host from cleanly shutdown / reboot if the VM selector window is open (Mac OS X hosts only; bug #8254)
  • Host-only Networking: fixed creating of host-only network interfaces (4.3.0 regression; bug #12182)
  • NAT: don’t run into an infinite loop in case the host cannot access any DNS server (4.3.0 regression; bug #12300)
  • NAT: don’t re-connect the cable if the DNS information changes and the cable was disconnected before (4.3.0 regression; bug #12225)
  • NAT: fixed several issues with automatically starting / terminating of NAT networks on VM start / stop and configuration changes
  • VBoxNetDHCP: don’t block prevent VBoxSVC from terminating (bug #12264)
  • 2D Video acceleration: fix crashes on presentation mode switches (bug #9194)
  • BusLogic: allow to run VMs with more than one BusLogic SCSI controller enabled
  • Keyboard: fixed a VM crash if a VM was resumed from a saved state where at least one key was pressed (bug #11289)
  • VBoxSVC: fixed a heap corruption under certain conditions (4.3.0 regression)
  • VBoxSVC: fixed a race leading to a hang during initialization (bug #12349)
  • OVF: fixed import logic for OVF appliances containing multiple VMs
  • OVF: improved logic for finding an appropriate image format during OVF import
  • API: block the removal of the current snapshot if it has child snapshots (only relevant for VMs without snapshottable hard disks, their presence always prevented removal), which resulted in VM configuration corruption
  • API: mark VM configurations with snapshots but without current snapshot as inaccessible, as this combination is nonsense
  • API: fixed information for some automatically generated events (only with XPCOM, Windows host was not affected), which caused errors when getting some of the attributes over the webservice (bug #12379)
  • SDK: extended the functionality coverage for the C bindings
  • Guest Control: various bug fixes and improved VBoxManage help (bugs #8072#11044#12336#12338#12346#12371)
  • Windows hosts: another attempt to fix the massive DPC latency (bug #6242)
  • Windows host installer: make registering file extensions optional, contributed by Tal Aloni (bug #8009)
  • Mac OS X hosts: properly sign the kernel extensions for Mavericks hosts (bug #12256)
  • Mac OS X hosts: fixed a bug where the VirtualBox dock icon was not properly removed from the dock after a VM terminated preventing Mavericks hosts from shutting down (bug #12241)
  • Mac OS X hosts: fixed minor installer issue (bug #12275)
  • Linux hosts / guests: Linux 3.13 compile fixes (bug #12358)
  • Linux guests: build the vboxvideo kernel module correctly on OL/RHEL 6.1 guests (bug #11996)
  • Linux guests: make 3D work on Slackware 14.1 (bug #12320 comments 3 and 4)
  • Guest Additions/3D: fixed an occasional dead-lock (bug #12319)
  • Windows Additions/3D: fixed possible memory leaking (bug #12228)
  • Windows Additions/XPDM: use separate tables containing valid video modes for each virtual monitor
  • Windows Additions: fixed automatic logins for Vista and newer Windows guests (bug #12332)

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VirtualBox 4.3.2 Update released

Posted by essjae on November 1, 2013

VirtualBox 4.3.2 (released 2013-11-01)

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

  • VMM: fixed restoring of the auxiliary TSC MSR in VT-x that caused host BSODs on Windows 8.1 hosts and unpredictable behavior on other hosts (bug #12237)
  • VMM: provide fake values for a couple of MSRs to make more guests happy on certain hosts
  • VMM: fixed detection of VT-x on certain machines where the BIOS would not set the VMX LOCK feature bit, which affected the VM settings in the GUI
  • VMM: fixed TPR threshold which caused BSODs on Windows XP guests that use the I/O APIC (VT-x only; bug#12227)
  • VMM: fixed PATM saved state incompatibility for software virtualized VMs (bug #12222)
  • VMM: don’t fail if AMD-V isn’t available if the VM is configured to use software virtualization
  • GUI: fixed guest resize breakage on visual representation mode change (when switching from normal to fullscreen etc)
  • GUI: make sure the guest screen is resized after restoring a VM from a saved state if the host screen size changed
  • GUI: disabled SCROLL LED sync from HID LEDs synchronization (Mac OS X hosts only)
  • Webcam passthrough improvements including GUI support (see the manual for more information)
  • Guest Control: implemented more IGuestSession methods
  • Guest Control: added support for deleting and renaming guest files + directories in VBoxManage
  • Guest Control: various bugfixes
  • API: incorrect handling of hardware UUID default value, resulting in an all zero DMI/SMBIOS UUID, which leads to Windows requesting re-activation (4.3 regression; bug #12244)
  • 3D support: fixed crash on shutdown if 2D video acceleration is enabled (Mac OS X hosts only)
  • 3D support: miscellaneous fixes
  • Storage: fixed detection of CD/DVD media when switching from an empty to a host drive with passthrough enabled
  • Storage: fixed hang of the VM process when the disk is full under certain circumstances
  • NAT: listen for changes of NAT Network setting at runtime
  • NAT: NAT Network DHCP server now saves leases to a persistent storage
  • Main: monitor changes in host DNS configuration
  • Mac OS X host: reworked a mechanism of adding a VM desktop alias from the VM selector
  • Mac OS X installer: remove old kernel extensions during upgrade (bug #12258)
  • Linux Additions: correctly set umask before installing (bug #12166)
  • X11 Additions/3D: fix freezes starting 3D desktop (bug #11503, thank you Sam Spilsbury)
  • X11 Additions/3D: fix depth buffer support (bug #11905)
  • X11 Additions/3D: fix Age Of Empires 3 rendering (bug #11331)
  • Windows Additions/3D: fix Google Earth plugin rendering
  • Windows Additions/WDDM: autoresize fixes

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