[Ubuntu] after Kernel upgrade, the virtual machine vittualbox cannot be started properly.

[Ubuntu] After the kernel is upgraded, the virtual machine vittualbox cannot be started properly to solve the RT problem. After upgrading from Ubuntu12.04 to 13.04, the following message is displayed when starting the virtual machine from the terminal: [html] WARNING: Thecharacterdevice/dev/vboxdrvdoesnote... [ubuntu] After the kernel is upgraded, the virtual machine vittualbox cannot be started properly to solve the RT problem. After upgrading from Ubuntu12.04 to 13.04, The following message is displayed when starting The virtual machine from The terminal: [html] WARNING: The character device/dev/vboxdrv does not exist. please install the virtualbox-ose-modules package for your kernel and load the module named vboxdrv into your system. you will not be able to start VMs until this problem is fixed. after searching on the Internet and trying many methods, we finally found a solution on the Debian Wiki: https://wiki.debian.org/VirtualBox Solution: [html] $ su # modprobe vboxdrv. of course, it is too troublesome to input such kernel operations every time you start a virtual machine, so simply add him to my quick command: [html]> vim ~ /. Bashrc # add this sentence to the File:> alias vbox = 'sudo modprobe vboxdrv & sudo virtualbox' # use the command to make the command take effect> sudo source ~ /. After bashrc is modified, you can find that you can directly enter vbox on the terminal to enable virtualbox perfectly.