ERROR: could not insert 'hid_sensor_gyro_3d': Required key not available

[YangJiao1996]

Required Info
Camera Model	D435
Firmware Version	Not Applicable
Operating System & Version	Ubuntu 18.04 LTS
Kernel Version (Linux Only)	4.15.0-39-generic
Platform	PC
SDK Version	2.0

Issue Description

Hi all,
I am trying to install the RealSense SDK 2.0 following this intruction. I followed all the steps, and got an error while running sudo apt-get install librealsense2-dkms:

DKMS: install completed.

Loading the modified modules into kernel...modprobe: ERROR: could not insert 'hid_sensor_gyro_3d': Required key not available
Current status:
librealsense2-dkms, 1.3.4, 4.15.0-39-generic, x86_64: installed
mod: videodev 			 version: realsense2-dkms
mod: uvcvideo 			 version: 1.1.2.realsense-1.3.4
mod: hid_sensor_gyro_3d 	 version: realsense2-dkms
mod: hid_sensor_accel_3d 	 version: realsense2-dkms

I also tried sudo apt-get install librealsense2-utils, and ran realsense-viewer then got the following error:

01/12 00:08:06,741 ERROR [139657814388608] (backend-v4l2.cpp:518) Cannot access /sys/class/video4linux

I believed my problem is similar to #2427 and #1225. However I do not want to fresh install the system since I have other projects on it. I also ran dmesg but did not get reasonable results.
Any help or intructions will be appreciate.

[ev-mp]

Hello @YangJiao1996 , the error type

ERROR: could not insert 'hid_sensor_gyro_3d': Required key not available

ca indicate that you have kernel's "Secure Boot" turned on. This feature is intended to prevent loading non-signed 3rd-party modules into the kernel.

Technically, it can be switched off in BIOS or via 3rd party dedicated software. I'd also recommend to check it IT department , if relevant, as it can be a corporate policy.

Follow up this discussion to apply one of the methods proposed

[ev-mp]

Hello @YangJiao1996,
Did you manage to address the issue ? Please update

[YangJiao1996]

Hi @ev-mp, I switched to Windows and successfully installed the SDK.