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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.

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Unsigned kernel and Secure Boot

I have just bought a Lenovo Ideapad 330 and installed 18.04LTS. Turns out, touchpad is not working. I found a solution for the touchpad here: Lenovo IdeaPad 330 touchpad not working I then downloaded ...
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39 views

VirtualBox installation on Ubuntu 18.04

I wanted to try out virtualbox on my fresh install of ubuntu so I ran this in the terminal: sudo apt install virtualbox I was prompted to install a package of around ~230MB and I did so. After this, ...
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1answer
75 views

Recovery menu missing in 18.04LTS

I'm trying to drop a root shell for recovery, but after the reboot, I cannot see the recovery menu where I should select the "Drop root shell" option. After the secure-boot selection I just prompted ...
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0answers
98 views

Ubuntu 16.04 can't connect to WiFi unless Secure Boot is disabled

I installed Ubuntu 16.04 recently, but I can't connect to WiFi unless Secure Boot is disabled. Is there any better solution or do I have to keep Secure Boot disabled?
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204 views

Routinue secureboot-db update just failed, should I be concerned?

I just ran sudo apt upgrade on my Ubuntu Bionic system and this happened: Get:1 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 secureboot-db amd64 1.4~ubuntu0.18.04.1 [8,488 B] Fetched ...
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0answers
34 views

I had to enter a MOK password twice to install Nvidia drivers; do I have to do it again?

On my Ubuntu 18.04 LTS work computer which has Secure Boot enabled, I had to enter a MOK password to install the proprietary Nvidia drivers. I entered as password after installing the kernel module, ...
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1answer
22 views

Not able to access win. after installing Ubuntu

After installing Ubuntu I saw this mok management options and I've selected to continue booting. enter image description here Then the windows asked me for bitlocker key and now I'm not able to log ...
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1answer
396 views

Ubuntu 18.04 not loading NVIDIA drivers for a RTX card

I've done a fresh install of Ubuntu 18.04 and tried to set it up with my new RTX 2080, but I was stuck with 640x480 (4:3) resolution. I've never had this issue with my old GTX. So I've installed the ...
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0answers
22 views

CMOS checksum error and BIOS reset upon waking from suspend (HP Stream 14)

first post/first time asking anything in any forum ever! The only other existing post about my issue ( Ubuntu 18.04 on HP Stream 14 - Suspend Produces Checksum Error ) doesn't help much. :( I'm ...
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0answers
29 views

Does Ubuntu Secure Boot make Intel TXT unnecessary?

Ubuntu supports Secure Boot, an UEFI feature. On Windows, Trusted Boot takes over where Secure Boot leaves off: the bootloader verifies the digital signature of the Windows kernel before loading it. ...
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0answers
87 views

Cannot install software because of UEFI Secure Boot

When I type sudo apt-get install software-properties-common command I get: dpkg was interrupted, you must manually run'sudo dpkg --configure -a' to correct the problem. I have tried running ...
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1answer
113 views

Booting with UEFI SecureBoot fails

I have just installed Ubuntu on an old (3-4 years old) HP laptop. At the time of the installation the BIOS was setup for "Legacy Boot Mode" and the "Secure Boot" option was disabled. (Understandably ...
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37 views

How to boot normally and exit emergency mode loop

I just restarted my laptop and it got stuck in emergency mode I am not able to exit it.By the way, I am new to ubuntu. Let me explain more. There is a message stating /dev/sda1 :clean XXXXX files, ...
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1answer
186 views

Enroll MOK password doesn't match

I'm trying to install Virtualbox on my Ubuntu 18.04 but I encountered some problems because of Secure Boot. So I'm following this tutorial which seems a good solution. But here is my problem : When ...
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2answers
807 views

Grub bootloader not showing up and no Ubuntu boot option in BIOS after installation (boot-info from boot-repair tool attached)

https://paste.ubuntu.com/p/5JNQJsFTBR/ The above URL is taken from my boot-repair tool's report. I'm new to Linux. I have a laptop computer with 2 hard drive. One is a 1TB ordinary hard disk drive ...
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0answers
45 views

LivePatch & secure boot self-signed kernel modules

It seems that LivePatch works with SecureBoot, but what about self-signed kernel modules? If a kernel patch is (auto)applied via livepatch, and I am using secure boot, do I have to re-sign the kernel ...
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2answers
2k views

Your kernels are unsigned. This system will fail to boot in a secure boot environment

I've installed the mainline kernel 4.18 from here http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18/ using ubuntu 18.04 The packages are unsigned and now grub is complaining about it at each update....
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0answers
67 views

Ubuntu asks me to insert a password in order to install third party drivers during the installation

As said in the title: I'm attempting to install Ubuntu 17 in dual boot with Windows 10, but everytime that I install it, during the installation, it asked me to provide a password for the secure boot, ...
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1answer
670 views

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 ...
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0answers
282 views

reinstall recent ubuntu update MOK

It appears after a recent update, Ubuntu installs 2 MOK keys. I plan to restore factory default MOKs because there are some MOKs that I don't recognize. How can reinstall that update MOKs after that? ...
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1answer
458 views

All kernel upgrades hang on update-secureboot-policy --enroll-key

I'm running Xubuntu 18.04 on my current laptop, as well as my old laptop that I'm trying to sell. I recently installed it on the latter; it's totally clean, no PPAs or extra kernels. Both systems are ...
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2answers
760 views

Failed to install latest virtualbox 5.2.10 on ubuntu 18.04

My OS and all packages were updated and functional. I received an upgrade notice for virtualbox, so I let it update. It failed and left my OS unstable. So I remove it completely: sudo dpkg --purge ...
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0answers
48 views

Problem with secure boot

I recently dual booted my laptop with Ubuntu and Windows 10. Initially, it used to show recovering journal on booting up. Then I used nouveau.modeset=0 and logged in and installed Nvidia driver 390. ...
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1answer
660 views

MokManager does not start on reboot

I am on Ubuntu 18.04, 4.15.0-23-generic. My laptop has two hard drives, one with windows 10, encrypted with bitlocker, and the other with Ubuntu, with LUKS full disk encryption. Right now, when ...
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0answers
544 views

failed to enroll MOK key on upgrade 17.10 -> 18.04

I upgraded my development edition Dell XPS 13 9360 (i.e. single-boot Ubuntu) from 17.10 to 18.04. During installation, I was asked whether I wanted to create a MOK key to install third-party drivers ...
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1answer
233 views

Re-enabling secure boot after Ubuntu install and disk erase

I used to have Windows 10 on my laptop, which ran very slowly. I decided to install Ubuntu 18.04 on it, so I disabled secure boot. Now, the laptop takes a long time to boot up. Is it safe to re-enable ...
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0answers
23 views

grub cmd prompt was displayed after “grub-update failed” during installation of Ubuntu 14.04 on Window 10 [duplicate]

I was installing Ubuntu on my Hp pavilion 7th generation 8Gb RAM and ITB HDD. I disable secure boot before starting the Ubuntu 14.04 installation. I shrink the partition and install the Ubuntu on ...
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0answers
59 views

How to enforce Secure Boot on the following setup : ubunutu 16.04 with grub2

Problem: Unsigned kernels boot up on UEFI Secure Boot enabled machine Setup: OS: Canonical signed Ubuntu 16.04 GRUB2: Canonical signed 2.02~beta2-36ubuntu3.17 SHIM: Microsoft signed, ...
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2answers
139 views

Laptop ignores GRUB after installing Ubuntu, boots Windows anyway

I installed Ubuntu MATE 18.04 and the installation went OK. It's an LNV laptop, with UEFI and all that Secure Boot nonsense. It was perfectly possible to install Linux besides Windows before; but ...
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1answer
418 views

Lenovo Thinkpad E480 No screen or Post - Fresh Install 18.04

So today I got my brand new Lenovo Thinkpad E480 (no OS) and rush to install Ubuntu 18.04 on it. After I was done with the install, Ubuntu started to boot up and told me to remove the media drive to ...
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0answers
53 views

ASUS UX310UQ compatibility problem?

I've bought this laptop some months ago for school. I'm at 1st year of IT so I'm still a noob, and didn't thought about Linux at all. I'd like to learn to use Ubuntu, but when I've installed 18.04 a ...
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1answer
274 views

Having trouble disabling secure boot

I have been trying to fix a problem that was previously asked here: Ubuntu 16.04 - only connecting to ethernet, no wifi option (note for those who do not wish to follow the link: I recently installed ...
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1answer
906 views

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 ...
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0answers
1k views

Convert ubuntu 18.04 MBR to UEFI boot

have my ubuntu 18.04 booting in MBR mode. How can I convert it to boot UEFI with Secure Boot without having to reinstall it?
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0answers
284 views

Remove Old Operating System from Boot List

I was trying several Linux Distros. I finally decided to install one and completely wiped the disk that had the linux distros on it. Now in Bios the boot Manager tells me of an old distro no longer ...
2
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1answer
379 views

mokutil - failing for almost all options

In the past I've successfully created a certificate and signed the virtualbox kernel modules for use. Now, other than --sb-state, all other parameters I try when running mokutil fail miserably. ...
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2answers
1k views

Should I turn secure boot off?

I recently installed Ubuntu 16.04 LTS with Secure Boot on. I did not understand the relevance of it at the time. Should I turn it off to prevent future problems, or is it ok to leave it on? Thank you
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0answers
490 views

What changes does Ubuntu 18.04 bring to Secure boot process?

Back in 2015 Ubuntu developers were criticized for their handling of Secure boot: https://www.pcworld.com/article/3026346/linux/ubuntus-secure-boot-support-isnt-secure-and-threatens-even-windows-pcs....
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0answers
71 views

Shim: enroll own Key - keep Microsoft validation?

I'm in a position to administrate our network. Now I have to look into Uefi Secure Boot. As far as I understood, the shim.efi is validated by a Microsoft certificate. Can I enroll a new key into shim ...
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2answers
4k views

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 IUEF secure boot enabled nvidia-smi could not found in ubuntu: $ nvidia-smi nvidia-smi: command not ...
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0answers
174 views

Error showing Ubuntu has been blocked by the current security policy

My lenovo laptop E41-15 after update is showing this error and showing no bookable device. Please help. (https://i.stack.imgur.com/UcCq6.jpg)
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0answers
114 views

Not sure what has happened with secure boot on computer

I recently performed a dual boot of Ubuntu 16.04.4 LTS with my Windows 10 system. In the installation, I checked the box saying "install third party software" and entered a password to turn off secure ...
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1answer
241 views

virtual box kernel not found (ubuntu 16.04, vbox 5.02)

When I try to use virtualbox (installed through package manager) I get the following error upon opening a virtual machine: The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or ...
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0answers
413 views

Enrolling MOK certificate with dkms and virtualbox-dkms (Virtualbox with secure boot enabled)

As many others, I need to run a Windows instance from Virtualbox, don't want to disable Secure Boot, and therefore have problems in making Virtualbox work after kernel updates. I have already run ...
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2answers
1k views

“The VGA card is not supported by UEFI driver”

Asus UEFI tells: "the VGA card is not supported by UEFI driver" and enables CSM (Compatibility Support Module: Legacy BIOS boot mode). Enabling CSM doesn't make much sense as it won't help if you are ...
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0answers
48 views

signatured module seems required even if secure boot disabled

The latest kernel Ubuntu 14.04 64bit 3.13.0-143-generic won't let vmware workstation player 12.5.9 start. This is caused by vmmon,vmnet modules are not loaded seemingly due to 'secure boot' prevents ...
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1answer
2k views

How can I protect against single user mode

Hello I was wondering how I could protect against single user mode for both init and systemd
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0answers
46 views

Secure Boot upto User Space

I have an x86 UEFI enabled machine. this has a certified shim, grub etc. Using secure boot feature and a custom kernel, I created my public/private key pair signed the kernel and updated MOKDB to ...
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1answer
153 views

Dual Boot, Cannot open Ubuntu [duplicate]

I was able to successfully install Ubuntu 16.04.3 LTS on my HPPavilion laptop with Windows10 as the main OS. After Ubuntu installation, it asked to restart. After restart I do not get Grub menu, and ...
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0answers
93 views

Reset Mokutil password

I have forgot mokutil password, i try: sudo mokutil --password in order to set a new password and disable secure boot but that password never worked, also tried sudo mokutil --clear-password and ...