Ask Ubuntu
Ask Ubuntu

Questions tagged [secure-boot]

Secure Boot is an UEFI feature that blocks unsigned drivers and operating systems from running. Use this tag if you have questions about Ubuntu on a secure-boot enabled system.

431 questions
165
votes
9 answers

Could not load 'vboxdrv' after upgrade to Ubuntu 16.04 (and I want to keep secure boot)

I upgrade from Ubuntu 15.10 to 16.04 and since then VirtualBox 5.0.18 isn't starting my VMs anymore. It complains that 'vboxdrv' isn't loaded. So I try to load it and get the following error: $ sudo modprobe vboxdrv modprobe: ERROR: could not insert…
jans
  • 1,935
104
votes
5 answers

Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?

This issue happens only on UEFI systems with enabled Secure Boot. When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not available when I try to modprobe them. VirtualBox…
Pilot6
  • 92,041
48
votes
4 answers

Why disabling "Secure Boot" is enforced policy when installing 3rd party modules

When installing 16.04, I was asked to turn off "Secure Boot" if I wanted to install 3rd party modules/drivers. I did not comply. And when I installed manually the only 3rd party drivers I use (bcmwl-kernel-source), I was asked again (during the…
solsTiCe
  • 9,515
45
votes
3 answers

Ubuntu: "Booting in insecure mode" with SecureBoot enabled

I have just installed Ubuntu 15.10, after having been with 16.04 LTS for some time to try it out. While I was using 16.04, I tried to install Nvidia Drivers and got told that I needed to disable SecureBoot for that, so I provided a password and on…
vagaerg
  • 647
36
votes
1 answer

Why was I asked to create a password in order to disable secure boot on initial installation of Ubuntu 16.04?

On initial installation of Ubuntu 16.04, I checked off "Install third-party software" and, underneath it, I was prompted to check off another option which would allow the OS package to automatically disable secure boot on its own, a prerequisite of…
Cosmo
  • 541
33
votes
3 answers

Is it safe to disable Secure Boot?

I just wanted to know if it is safe for me to disable secure boot for the purpose of installing the latest Nvidia Graphics Driver. I am running Windows 10 alongside Ubuntu 16.04 on an Acer Aspire V Nitro. They each have their own partition on the…
VihanAgarwal
  • 505
29
votes
6 answers

Impossible to update UEFI dbx

My Ubuntu (20.04) Software is prompting a new firmware available: UEFI dbx 77--> 217 (?), but when I try to update I receive the following error message: Impossible to update UEFI dbx. Blocked executable in the ESP, ensure grub and shim are up to…
Py-ser
  • 687
25
votes
3 answers

Stuck in terminal at Configuring Secure Boot

I am on Ubuntu 18. I was trying to install amd drivers. A Configuring Secure Boot screen appeared in terminal and I am stuck on it. Clicking ok does nothing, pressing enter does nothing.. what do I do?
Hayk Safaryan
  • 711
22
votes
4 answers

How to understand Ubuntu UEFI Secure Boot install?

Now that Secure Boot is supported, what special instructions does one have to follow to install Ubuntu on a UEFI Secure Boot enabled PC shipped with Windows 8? As I understand, Ubuntu >= 12.04.2 ships with signed GRUB2. I searched but cannot get…
Wolverine
  • 320
21
votes
2 answers

Hibernate with UEFI and secure boot enabled

"sudo systemctl start hibernate.target" worked fine with 16.04 on a Acer B117 using legacy boot; Updating to 18.04 forced me to use UEFI and (Acer requirement) secure boot enabled. Suspend still works, but I need hibernate. Swap partition is active…
olli61
  • 211
20
votes
2 answers

Enroll a new Machine-Owner Key?

I installed Ubuntu and then decided to install virtualbox via apt install. Out of the blue, I am asked this: ┌───────────────────────┤ Configuring Secure Boot ├────────────────────────┐ │ A new Machine-Owner key has been generated for this…
Nicolas Raoul
  • 11,921
18
votes
4 answers

How to install nvidia driver with secure boot enabled?

I found this post: nvidia-smi command not found Ubuntu 16.04 | Ask Ubuntu Which says that with UEFI secure boot enabled nvidia-smi could not be found in Ubuntu: $ nvidia-smi nvidia-smi: command not found Any idea on how to enable secure boot with…
2017561-1
  • 520
  • 1
  • 7
  • 19
15
votes
2 answers

Disable secure boot y/n?

I have windows 10 installed. Im trying to install ubuntu. Should i turn off secure boot or leave it on? What does it do?
user25832
  • 277
14
votes
1 answer

Is secure boot properly enabled on ubuntu 16.10?

I know Ubuntu used to ship with secure boot support but only for compatibility. Canonical's Secure Boot implementation in Ubuntu 15.10 and early is primarily about hardware-enablement and this page focuses on how to test Secure Boot for common…
John Doe
  • 143
14
votes
3 answers

Is it possible to delete an enrolled key using mokutil without the original .der file?

While fighting with my discrete graphics card, I reinstalled Ubuntu several times. The first couple times I was very careful to move the .priv and .der key I was using to sign my dkms kernel modules to another partition. Unfortunately, as I got…
adempewolff
  • 12,400
1
2 3
…
28 29