我的VirtualBox在启动虚拟机时出现了以下错误：
Kernel driver not installed (rc=-1908) VirtualBox Linux内核驱动程序（vboxdrv）未加载或/dev/vboxdrv存在权限问题。请安装virtualbox-dkms软件包并以root身份执行'modprobe vboxdrv'来加载内核模块。 如果您的发行版中有此软件包，请先安装DKMS软件包。该软件包可跟踪Linux内核的更改，并在必要时重新编译vboxdrv内核模块。
where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.
我按照指示安装了DKMS软件包，但收到了已经安装的消息。执行
导致出现了这个错误：
我尝试重新安装内核和virtualbox-dkms。
我得到了这个输出。
这篇文章中，有几句话引起了我的注意：
你有没有办法修复我的Virtualbox？是不是我的内核不被VirtualBox支持？如果是的话，我该如何切换到一个旧的/受支持的内核？
Kernel driver not installed (rc=-1908) VirtualBox Linux内核驱动程序（vboxdrv）未加载或/dev/vboxdrv存在权限问题。请安装virtualbox-dkms软件包并以root身份执行'modprobe vboxdrv'来加载内核模块。 如果您的发行版中有此软件包，请先安装DKMS软件包。该软件包可跟踪Linux内核的更改，并在必要时重新编译vboxdrv内核模块。
where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.
我按照指示安装了DKMS软件包，但收到了已经安装的消息。执行
sudo modprobe vboxdrv
导致出现了这个错误：
modprobe: FATAL: Module vboxdrv not found in directory /lib/modules/4.15.0-041500rc2-lowlatency
我尝试重新安装内核和virtualbox-dkms。
sudo apt install --reinstall linux-headers-$(uname -r) virtualbox-dkms dkms
我得到了这个输出。
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reinstallation of linux-headers-4.15.0-041500rc2-lowlatency is not possible, it cannot be downloaded.
The following additional packages will be installed:
virtualbox virtualbox-qt
Suggested packages:
vde2 virtualbox-guest-additions-iso
The following NEW packages will be installed:
virtualbox virtualbox-dkms virtualbox-qt
0 upgraded, 3 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 66.3 kB/22.4 MB of archives.
After this operation, 95.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ch.archive.ubuntu.com/ubuntu xenial-updates/main amd64 dkms all 2.2.0.3-2ubuntu11.5 [66.3 kB]
Fetched 66.3 kB in 0s (477 kB/s)
(Reading database ... 531094 files and directories currently installed.)
Preparing to unpack .../dkms_2.2.0.3-2ubuntu11.5_all.deb ...
Unpacking dkms (2.2.0.3-2ubuntu11.5) over (2.2.0.3-2ubuntu11.5) ...
Selecting previously unselected package virtualbox-dkms.
Preparing to unpack .../virtualbox-dkms_5.0.40-dfsg-0ubuntu1.16.04.2_all.deb ...
Unpacking virtualbox-dkms (5.0.40-dfsg-0ubuntu1.16.04.2) ...
Selecting previously unselected package virtualbox.
Preparing to unpack .../virtualbox_5.0.40-dfsg-0ubuntu1.16.04.2_amd64.deb ...
Unpacking virtualbox (5.0.40-dfsg-0ubuntu1.16.04.2) ...
Selecting previously unselected package virtualbox-qt.
Preparing to unpack .../virtualbox-qt_5.0.40-dfsg-0ubuntu1.16.04.2_amd64.deb ...
Unpacking virtualbox-qt (5.0.40-dfsg-0ubuntu1.16.04.2) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for systemd (229-4ubuntu21.1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for shared-mime-info (1.5-2ubuntu0.1) ...
Processing triggers for menu (2.1.47ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
Setting up dkms (2.2.0.3-2ubuntu11.5) ...
Setting up virtualbox-dkms (5.0.40-dfsg-0ubuntu1.16.04.2) ...
Loading new virtualbox-5.0.40 DKMS files...
First Installation: checking all kernels...
Building only for 4.15.0-041500rc2-lowlatency
Building initial module for 4.15.0-041500rc2-lowlatency
ERROR (dkms apport): kernel package linux-headers-4.15.0-041500rc2-lowlatency is not supported
Error! Bad return status for module build on kernel: 4.15.0-041500rc2-lowlatency (x86_64)
Consult /var/lib/dkms/virtualbox/5.0.40/build/make.log for more information.
Job for virtualbox.service failed because the control process exited with error code. See "systemctl status virtualbox.service" and "journalctl -xe" for details.
invoke-rc.d: initscript virtualbox, action "restart" failed.
● virtualbox.service - LSB: VirtualBox Linux kernel module
Loaded: loaded (/etc/init.d/virtualbox; bad; vendor preset: enabled)
Active: failed (Result: exit-code) since Die 2018-02-20 20:50:55 CET; 7ms ago
Docs: man:systemd-sysv-generator(8)
Process: 10139 ExecStart=/etc/init.d/virtualbox start (code=exited, status=1/FAILURE)
Feb 20 20:50:55 matteo-3 systemd[1]: Starting LSB: VirtualBox Linux kernel .....
Feb 20 20:50:55 matteo-3 virtualbox[10139]: * Loading VirtualBox kernel mod....
Feb 20 20:50:55 matteo-3 virtualbox[10139]: * No suitable module for runnin...d
Feb 20 20:50:55 matteo-3 virtualbox[10139]: ...fail!
Feb 20 20:50:55 matteo-3 systemd[1]: virtualbox.service: Control process ex...=1
Feb 20 20:50:55 matteo-3 systemd[1]: Failed to start LSB: VirtualBox Linux ...e.
Feb 20 20:50:55 matteo-3 systemd[1]: virtualbox.service: Unit entered faile...e.
Feb 20 20:50:55 matteo-3 systemd[1]: virtualbox.service: Failed with result...'.
Hint: Some lines were ellipsized, use -l to show in full.
Setting up virtualbox (5.0.40-dfsg-0ubuntu1.16.04.2) ...
vboxweb.service is a disabled or a static unit, not starting it.
Job for virtualbox.service failed because the control process exited with error code. See "systemctl status virtualbox.service" and "journalctl -xe" for details.
invoke-rc.d: initscript virtualbox, action "restart" failed.
● virtualbox.service - LSB: VirtualBox Linux kernel module
Loaded: loaded (/etc/init.d/virtualbox; bad; vendor preset: enabled)
Active: failed (Result: exit-code) since Die 2018-02-20 20:50:57 CET; 7ms ago
Docs: man:systemd-sysv-generator(8)
Process: 10441 ExecStart=/etc/init.d/virtualbox start (code=exited, status=1/FAILURE)
Feb 20 20:50:56 matteo-3 systemd[1]: Starting LSB: VirtualBox Linux kernel .....
Feb 20 20:50:57 matteo-3 virtualbox[10441]: * Loading VirtualBox kernel mod....
Feb 20 20:50:57 matteo-3 virtualbox[10441]: * No suitable module for runnin...d
Feb 20 20:50:57 matteo-3 virtualbox[10441]: ...fail!
Feb 20 20:50:57 matteo-3 systemd[1]: virtualbox.service: Control process ex...=1
Feb 20 20:50:57 matteo-3 systemd[1]: Failed to start LSB: VirtualBox Linux ...e.
Feb 20 20:50:57 matteo-3 systemd[1]: virtualbox.service: Unit entered faile...e.
Feb 20 20:50:57 matteo-3 systemd[1]: virtualbox.service: Failed with result...'.
Hint: Some lines were ellipsized, use -l to show in full.
Setting up virtualbox-qt (5.0.40-dfsg-0ubuntu1.16.04.2) ...
Processing triggers for menu (2.1.47ubuntu1) ...
这篇文章中，有几句话引起了我的注意：
Building initial module for 4.15.0-041500rc2-lowlatency
ERROR (dkms apport): kernel package linux-headers-4.15.0-041500rc2-lowlatency is not supported
Error! Bad return status for module build on kernel: 4.15.0-041500rc2-lowlatency (x86_64)
你有没有办法修复我的Virtualbox？是不是我的内核不被VirtualBox支持？如果是的话，我该如何切换到一个旧的/受支持的内核？