Linux hibernate secure boot The machine runs Debian10/KDE, has Secure Boot enabled and currently doesn't have a swapfile but a swap-partition (which is larger than the RAM). Note, it is safe for me to do so because I am using LUKS but otherwise this is not advised. Step 1: Disable Secure Boot. This guide is to explain, step-by-step, how to setup Alpine Linux with Full Disk Encryption using LUKS2, LVM (one Physical Volume Partition with three Logical Volume Partitions (/ /boot & swap) with hibernation on a NVMe drive, with UEFI & Secure Boot. Multiple kernel messages along the lines of. I realize that hibernation is now officially disabled when secure-boot is enabled on all pre-built kernels. 7 Aug 13, 2019 · I can't hibernate another one which has a swapfile and Secure Boot currently disabled. md UEFI / Secure Boot. efi to boot from). 04 (the installer supports this configuration, though doesn’t make it easy to figure out what the prerequisites are), but what if you want hibernation support? The kernel hard-disables hibernation when Secure Boot is enabled, so you obviously can’t have all four at once… Mar 31, 2024 · I want to use be able to hibernate with secure boot. Oct 29, 2023 · When running under UEFI Secure Boot with a current Linux distribution, "kernel lockdown" will be instated. Unencrypted hibernation/suspend to swap are disallowed as the kernel image is saved to a medium that can then be accessed Oct 23, 2024 · I’ve mentioned that you have to disable “Secure Boot” to be able to use the feature. This is given back to us as metadata accompanying the encrypted secret. efi, it must be signed using your Secure Boot key. " Actually you can't use hibernate feature with a secure boot. Secure Boot is a mode of UEFI firmwares. efi). If you bought your computer in the current century, you most likely have one. social/m/Linux Please refrain from posting help requests here, cheers. This is why, at least currently, hibernation is incompatible with secure boot on Linux. That could be one of the reasons that Ubuntu does not enable this function out-of-box. I was able to hibernate using s2disk or pm-hibernate, but resume was failing. Restart and then run MOK Manager (mmx64. This seems to stem from the kernel lockdown feature that (only?) is active when you boot in UEFI mode with secure boot enabled. Hibernation is also quite hard to implement often due to ACPI bugs which exist at the firmware level, so it doesn’t work reliably on every machine, and if resuming after hibernation doesn’t work the user can loose data. About the pesign Tool2-1. Securing your laptop. Jul 23, 2023 · On an EFI-enabled x86 or arm64 machine, lockdown will be automatically enabled if the system boots in EFI Secure Boot mode. Is it at all possible to have all three at once? Welcome to /r/Linux! This is a community for sharing news about Linux, interesting developments and press. Cannot resume from hibernation, stuck on blank screen. Your swap UUID/offset may be incorrect in GRUB or initramfs config. Windows has Bitlocker, and Linux has LUKS. Aug 10, 2022 · If Secure Boot is enabled and the kernel boots in lockdown mode, hibernation does not work as long as the kernel does not support signed hibernation images. If you're looking for tech support, /r/Linux4Noobs is a friendly community that can help you. On my machine with secure boot ON, cat /sys/power/disk answered: [disabled] Jan 28, 2013 · Using kexec could bypass the Secure Boot trust model to load a modified kernel. Ultimately, the Linux kernel will need to be improved to support signed kexec payloads. The BIOS setting option for secure boot differs depends on I'm on Kubuntu 22. "These Jun 7, 2020 · hibernation is restricted; see man kernel_lockdown. 04 you are asked what you want to do with it (which is a new thing as far as I can recall) and I kept it ON without giving it much thought. I have LMDE 6 happily installed on a LUKS encrypted LVM. 10 (and newer) to allow not only for an encrypted swap that satisfies kernel lockdown mode, but also allows for hibernation, without requiring a password to unlock the disk? May 30, 2024 · It’s not too difficult to use FDE with the TPM and Secure Boot on Ubuntu 24. Add ‘hibernate’ option into shutdown menu. About the MOK Database1-9. Microsoft act as a Certification Authority (CA) for SB, and they will sign programs on behalf of other trusted organisations so that their programs will also run. Mar 14, 2024 · How can one properly set up an encrypted swap when making a brand new install of Ubuntu 23. To verify if Secure Boot enabled in your machine, run command in terminal: mokutil --sb-state Description of the Secure Boot Key Implementation1-6. This blog entry gets into the details of how it all works. Given I'm installing onto a laptop with no S3 sleep support, having hibernate, secure boot, and an encrypted drive are 3 things that are pretty desirable. As far as I understand that this feature is supposed to prevent a program running at user-space from modifying the kernel. Dec 18, 2024 · Notes on my Arch Linux installation: UEFI/Secure Boot + systemd-boot, LUKS-encrypted root (XFS), LUKS-encrypted swap (with hibernate & unlocked via TPM) - arch_linux_installation. For that I re-disabled Secure boot again. My question is : How can I get hibernation into swap file working with Secure boot enabled like he did ? Thanks. How Secure Boot Is Enforced Within Oracle Linux1-7. Dec 10, 2022 · This is a somehow personal step-by-step documentation, how I achieved hibernation and suspend-then-hibernate on a recent Fedora system with enabled secure boot. About the efibootmgr Application2-1 Apr 15, 2024 · Hibernate function does not work in may case in Linux Mint 20 by default. The Linux kernel disables the possibility of hibernation when Secure Boot is in use because it cannot guarantee that the swap file is unchanged. . How can Linux hibernation be enabled under UEFI Secure Boot with kernel lockdown on OpenSuSE? (The question was originally asking about all distributions, however I have achieved a result for one distribution, only) When running under UEFI Secure Boot with a current Linux distribution, " UEFI Secure Boot is not an attempt by Microsoft to lock Linux out of the PC market here; SB is a security measure to protect against malware during early system boot. Jun 4, 2023 · When running under UEFI Secure Boot with a current Linux distribution, "kernel lockdown" will be instated. 10. Try disabling secure boot in BIOS settings. I just had to reinstall the boot loader. The kexec and hibernate disabling patches can be found on the Linux kernel mailing list in a patch series entitled by Matthew as Secure Boot: More controversial changes. Description of the Shim First Stage Boot Loader1-7. What we want to do is to store the key to decrypt the partition in the TPM. The solution is to use full-disk encryption on the system volume and any volumes containing paged/hibernation data. Note, in order to execute mmx64. "When we encrypt material with the TPM, we can ask it to record the PCR state. You can test it out by opening “terminal” from start menu, and run command: You need to disable 'Secure Boot' in BIOS/UEFI settings before being able to use hibernate systemctl hibernate. Enabling and Disabling Secure Boot1-8. To fix this, as my system is booted up using UEFI instead of grub. Double check the values match blkid output. Mar 5, 2022 · Since I have to have secure-boot to run Win-11, I have to live without hibernation on Linux (really really difficult). Disable Secure Boot and Lockdown is disabled, enabling hibernation. When lockdown is in effect, a number of features are disabled or have their use restricted. Debian works with secure boot (if you need to do it via your UEFI setup, choose the shimx64. "Unencrypted hibernation/suspend to swap are disallowed as the kernel image is saved to a medium that can then be accessed. Secure boot can sometimes prevent successful resume. Goal and Rationale Hibernation stores the current runtime state of your machine – effectively the contents of your RAM, onto disk and does a clean shutdown. To be clear, the root filesystem, all mounts and swap are encrypted. Now that you have everything needed, here is my plan. 7 As user2213 indicated, hibernation file attacks are not prevented by anything in the UEFI Secure Boot specification. Find out where is your Swap space, then tell Linux Kernel to resume from it on startup. Hibernate is very slow to resume So, I tried to re-enable Secure boot from my UEFI settings, and a surprise came, my laptop cannot boot anymore, it looks that it can't find grub bootloader (it goes to checking hardware test). Feb 22, 2021 · Matthew Garrett recently posted a patch set enabling hibernation on systems that are running in the UEFI secure-boot lockdown mode. Basically you patch the kernel to allow hibernation with enabled secure boot and then configure hibernation. Please also check out: https://lemmy. Basically you patch the kernel to allow hibernation with en… Jun 9, 2020 · Run the command and create a password. Multiple kernel messages along the lines of Lockdown: swapper/0: hibernation is restricted; see man kernel_lockdown. NOTE: Save your May 6, 2016 · Failed to hibernate system via logind: Sleep verb not supported It turns out that secure boot was the culprit: installing 16. May 11, 2023 · This is a somehow personal step-by-step documentation, how I achieved hibernation and suspend-then-hibernate on a recent Fedora system with enabled secure boot. But, secure boot may impact some of the things you might want to use your PC for: Usually, secure boot is not compatible with hibernate - the resume from hibernate is unable to verify the kernel is still secure Apr 6, 2022 · Secure Boot. Tools and Applications for Administering Secure Boot. Windows will lock down the hardware Windows isn't "locking down" the hardware, it's leaving the hardware in a post-initialized state, which Linux drivers may not account for. Lockdown: swapper/0: hibernation is restricted; see man kernel_lockdown. Sep 9, 2024 · To enable hibernate feature in Linux Mint, you need to do following steps one by one: First, disable secure boot in BIOS. 7. ml/c/linux and Kbin. xyxhb xipw mdn lka lxviab lvmm imot xptip dyjv qsc