Virtualbox-dkmsとヘッダーがインストールされていても、このエラーが発生します。 dkmsとヘッダーを再インストールしてみましたが、何も更新されませんでした。
WARNING: The character device /dev/vboxdrv does not exist.
Please install the virtualbox-dkms package and the appropriate
headers, most likely linux-headers-generic.
You will not be able to start VMs until this problem is fixed.
5.2.34_Ubuntur133883
推奨通りに再構成https://askubuntu.com/questions/465454/problem-with-the-installation-of-virtualbox私は次のようなものを得ます：
DKMS: install completed.
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; generated)
Active: failed (Result: exit-code) since Sun 2020-01-05 11:38:19 IST; 6ms ago
Docs: man:systemd-sysv-generator(8)
Process: 23679 ExecStart=/etc/init.d/virtualbox start (code=exited, status=1/FAILURE)
Jan 05 11:38:19 kajoo-weapon systemd[1]: Starting LSB: VirtualBox Linux kernel module...
Jan 05 11:38:19 kajoo-weapon virtualbox[23679]: * Loading VirtualBox kernel modules...
Jan 05 11:38:19 kajoo-weapon virtualbox[23679]: * modprobe vboxdrv failed. Please use 'dmesg' to find out why
Jan 05 11:38:19 kajoo-weapon virtualbox[23679]: ...fail!
Jan 05 11:38:19 kajoo-weapon systemd[1]: virtualbox.service: Control process exited, code=exited status=1
Jan 05 11:38:19 kajoo-weapon systemd[1]: virtualbox.service: Failed with result 'exit-code'.
Jan 05 11:38:19 kajoo-weapon systemd[1]: Failed to start LSB: VirtualBox Linux kernel module.