Ubuntu 16.04, unable to install version 1.2 on Dell XPS 9350

[Mrmice]

mrmice@MrMice-XPS-13:~/Downloads$ systemctl status dlm.service
● dlm.service - DisplayLink Manager Service
Loaded: loaded (/lib/systemd/system/dlm.service; static; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Son 2016-10-02 20:27:52 CEST; 2s ago
Process: 19822 ExecStartPre=/sbin/modprobe evdi (code=exited, status=1/FAILURE)

Okt 02 20:27:52 MrMice-XPS-13 systemd[1]: Failed to start DisplayLink Manager Service.
Okt 02 20:27:52 MrMice-XPS-13 systemd[1]: dlm.service: Unit entered failed state.
Okt 02 20:27:52 MrMice-XPS-13 systemd[1]: dlm.service: Failed with result 'exit-code'.

AND

Okt 02 20:28:34 MrMice-XPS-13 systemd[1]: dlm.service: Control process exited, code=exited status=1
Okt 02 20:28:34 MrMice-XPS-13 systemd[1]: Failed to start DisplayLink Manager Service.
-- Subject: Unit dlm.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has failed.
--
-- The result is failed.
Okt 02 20:28:34 MrMice-XPS-13 systemd[1]: dlm.service: Unit entered failed state.
Okt 02 20:28:34 MrMice-XPS-13 systemd[1]: dlm.service: Failed with result 'exit-code'.
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: dlm.service: Service hold-off time over, scheduling restart.
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: Stopped DisplayLink Manager Service.
-- Subject: Unit dlm.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has finished shutting down.
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: Starting DisplayLink Manager Service...
-- Subject: Unit dlm.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has begun starting up.
Okt 02 20:28:39 MrMice-XPS-13 modprobe[19868]: modprobe: ERROR: could not insert 'evdi': Required key not available
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: dlm.service: Control process exited, code=exited status=1
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: Failed to start DisplayLink Manager Service.
-- Subject: Unit dlm.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has failed.
--
-- The result is failed.
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: dlm.service: Unit entered failed state.
Okt 02 20:28:39 MrMice-XPS-13 systemd[1]: dlm.service: Failed with result 'exit-code'.
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: dlm.service: Service hold-off time over, scheduling restart.
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: Stopped DisplayLink Manager Service.
-- Subject: Unit dlm.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has finished shutting down.
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: Starting DisplayLink Manager Service...
-- Subject: Unit dlm.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has begun starting up.
Okt 02 20:28:44 MrMice-XPS-13 modprobe[19872]: modprobe: ERROR: could not insert 'evdi': Required key not available
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: dlm.service: Control process exited, code=exited status=1
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: Failed to start DisplayLink Manager Service.
-- Subject: Unit dlm.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit dlm.service has failed.
--
-- The result is failed.
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: dlm.service: Unit entered failed state.
Okt 02 20:28:44 MrMice-XPS-13 systemd[1]: dlm.service: Failed with result 'exit-code'.

Although

mrmice@MrMice-XPS-13:~/Downloads$ sudo dkms status
evdi, 1.2.58, 4.4.0-38-generic, x86_64: installed