VirtualBox 5.1.2发布，这是一个维护版本，更新如下： VMM: several fixes GUI: fixed screenshot if the VM is started in separate mode GUI: fixed issue with double-click/opening registered file types (.vbox and .vbox-extpack) on Mac OS X (bug #15648) GUI: fixed a bug which made it impossible close some error/warning messages using the close button GUI: weakened the control over the VM window behavior allowing to resize it across multiple screens and to use in Snap Assist techniques GUI: jump to the second tab of the session information window (5.1.0 regression) GUI: fix for Alt-Tab Storage: fixed creating fixed size VHD images (bug #15601) Storage: fixed a hang during power off if the VM was suspended before and a NVMe controller is configured USB: fixed a crash under certain conditions Audio: make AC'97 volume control work again (5.1.0 regression; bug #15598) Audio: SB16 fixes EFI: fixed access to devices attached to SATA port 2 and higher (bug #15607) OVA: fix for checking certain signatures OVA: fixed MAC address generation for appliances created by VirtualBox (5.1.0 regression; bug #15623) API: fixed audio settings handling for older config files (bug #15626) API: fixed truncation of USB product/vendor IDs on Linux hosts (5.1.0 regression; bug #15644) API: fixed VRDP with authentication (bug #15653) API: don't crash if there is no graphics controller configured (bug #15628) Linux hosts: fixed EL5 builds (bug #15634) non-Windows hosts: fixed a crash during shutdown under rare circumstances (bug #15568) Linux Additions: fixed SELinux issue which prevented certain Linux guests to work in 3D mode (bug #15574) User Manual: updates 详情：https://www.virtualbox.org/wiki/Changelog VirtualBox 5.1.2 发布，开源虚拟机下载地址
