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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Full disk encryption - Hibernation and unlocking (feddit.org)

submitted 3 weeks ago* (last edited 3 weeks ago) by sp3ctre@feddit.org to c/linux@lemmy.ml

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Hey magical linux-oracle,

I recently made a full disk encryption on my computer via the debian installer.

I partitioned it like this:

SSD:

-- unencrypted part --

Boot - 1GB space, mounting point: /boot

EFI - 512MB space, mounting point: ESP, bootable flag: on

-- encrypted part --

Encrypted container with a volume group (vg-1) containing 3 logical volumes:

Root - 50GB space, mounting point: /

Swap - 30GB space, mounting point: swap

Home - Rest of space, mounting point: /home

& Second harddrive fully encrypted with one logical volume and mounting point /mnt/data

The install of linux worked pretty well.

Unfortunately, the hibernation part doesn't work out of the box. When I press hibernate (or standby), it only goes to the lock screen. How can I solve that issue? (Is it even a good idea to use hibernation on encrypted devices?)

Second thing: As you can see from my setup, I use 2 disks. When I start up my system, I only need to enter my decryption password once (not twice for the 2nd HD) and I see, that my second hard disk seems to be mounted already. It seems that people usually struggle with typing in their passwords twice and want a solution for that. Is it possible, that debian automatically fixed this for me (It's the same pw for both)?

Thanks!

~sp3ctre

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[–] quaff@lemmy.ca 7 points 3 weeks ago

Not sure about Debian, but on Arch Linux, hibernation with FDE works perfectly on my Framework laptop. It took a little to setup; I use a swapfile for my swap. And it exists on my encrypted drive. You know your use case best,I found for my usecase, a separate swap partition (to say nothing about two separate ones) was restrictive and unnecessary. A swapfile works well and lives on an encrypted drive. No need to tinker too much beyond that. Check out the Arch wiki, it might not align 100% with Debian but those wikis are super informative and can teach you how the process works so you can apply to Debian.

https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption#With_suspend-to-disk_support