Linux

48252 readers

703 users here now

From Wikipedia, the free encyclopedia

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.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

AgreeableLandscape@lemmy.ml

nooter692@lemmy.ml

MarcellusDrum@lemmy.ml

cypherpunks@lemmy.ml

cyclohexane@lemmy.ml

d3Xt3r@lemmy.nz

Warning: ubuntu tpm recovery key cannot unlock disk outside of boot (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by ichbinjasokreativ@lemmy.world to c/linux@lemmy.ml

13 comments fedilink hide all child comments

Hi everybody, bit of a warning here: The recovery key generated during the installation of Ubuntu 23.10 (if you select tpm-backed fde) cannot be used to unlock the disk outside of boot, as in any 'cryptsetup' command and so on will not accept the recovery key. unlocking when accessed from different system does not work etc.

You can use it to unlock the disk while booting if your tpm somehow fails, but ONLY in that specific situation.

I kind of purposefully broke my tpm keys to see if it could be restored with 23.10 and ended up having to reinstal, as I ended up having to enter the recovery key at boot every time and no way of adding additional unlock options to the volume, as cryptsetup would not accept the recovery key as passphrase.

This bug could be very bad for new users.

See this bug report: https://bugs.launchpad.net/ubuntu-desktop-installer/+bug/2039741

you are viewing a single comment's thread
view the rest of the comments

[–] stealthnerd@lemmy.world 1 points 1 year ago (1 children)

Okay so I just read up on this. It's it true that TPM backed FDE only allows snaps?!?

Debs are completely unsupported?

[–] ichbinjasokreativ@lemmy.world 1 points 1 year ago

The ubuntu implementation is based on snap, but if you want to purge snapd (just install another distro at that point though), you can implement encryption as usual and add the tpm later on. Snap is only neccessary if you enable tpm-backed fde from setup.