VirtualBox USB device is not supported by default in ubuntu14.04 system, it is necessary to install Oracle VM VirtualBox Extension Pack, but the following version number must be installed. Successful Installation:
Oracle_vm_virtualbox_extension_pack-4-3-8-92456.vbox-extpack
This version number is: Http://virtualbox-extension-pack.en.softonic.com/download
Assume that the latest version number Oracle_vm_virtualbox_extension_pack-5.0.10-104061.vbox-extpack downloaded from the Oracle site is not installed successfully.
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But. Once the USB 2.0 (EHCI) controller is enabled, the original XP always fails to start properly.
The USB 2.0 (EHCI) controller is not enabled and the XP virtual machine can be started normally.
The provisional cause is not clear.
VirtualBox Install Oracle VM VirtualBox Extension Pack package in ubuntu14.04 system