Preparing to unpack .../nvidia-387_387.34-0ubuntu0~gpu16.04.2_amd64.deb ... Unpacking nvidia-387 (387.34-0ubuntu0~gpu16.04.2) ... Selecting previously unselected package libcuda1-387. Preparing to unpack .../libcuda1-387_387.34-0ubuntu0~gpu16.04.2_amd64.deb ... Unpacking libcuda1-387 (387.34-0ubuntu0~gpu16.04.2) ... Selecting previously unselected package nvidia-opencl-icd-387. Preparing to unpack .../nvidia-opencl-icd-387_387.34-0ubuntu0~gpu16.04.2_amd64.deb ... Unpacking nvidia-opencl-icd-387 (387.34-0ubuntu0~gpu16.04.2) ... Selecting previously unselected package nvidia-prime. Preparing to unpack .../nvidia-prime_0.8.2_amd64.deb ... Unpacking nvidia-prime (0.8.2) ... Selecting previously unselected package nvidia-settings. Preparing to unpack .../nvidia-settings_387.22-0ubuntu0~gpu16.04.1_amd64.deb ... Unpacking nvidia-settings (387.22-0ubuntu0~gpu16.04.1) ... Processing triggers for libc-bin (2.23-0ubuntu9) ... Processing triggers for man-db (2.7.5-1) ... Processing triggers for ureadahead (0.100.0-19) ... ureadahead will be reprofiled on next reboot Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ... 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 mime-support (3.59ubuntu1) ... dpkg: error processing package unattended-upgrades (--configure): package unattended-upgrades is already installed and configured dpkg: error processing package virtualbox-dkms (--configure): package virtualbox-dkms is already installed and configured dpkg: error processing package virtualbox (--configure): package virtualbox is already installed and configured dpkg: error processing package virtualbox-qt (--configure): package virtualbox-qt is already installed and configured