this post was submitted on 24 Feb 2024
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Linux
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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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It's disappointing to see so many commentors arguing against you wanting to do this. Windows has it through bitlocker which is secured via the TPM as you know. Yes it can be bypassed, but it's all about your threat level and effort into mitigating it.
I am currently using a TPM on my opensuse tumbleweed machine to auto unencrypt my drive during boot. What you want to do is possible, but not widely supported (yet). Unfortunately, the best I can do is point you to the section in the opensuse wiki that worked for me.
https://en.opensuse.org/SDB:Encrypted_root_file_system
If you scroll down on that page you'll see the section about TPM support. I don't know how well it will play with your OS. As always, back up all your files before messing with hard drive encryption. Best of luck!
Sums up about every thread asking how to do something on Linux, 30 different responses on how the OP is wrong and shouldn't do it that way.
To be fair there are probably many different ways to solve the problem. I'm somewhat experienced with Linux and I've attempted seeing up TPM LUKS decryption on boot. It's certainly not easy or at least wasn't when I tried. For non experienced people it's easier to just enter the password at boot and enable auto login. Then you get the security, software, ethics, or licensing debates that accompany most Linux discussions.
I mean it's somewhat of a meme. But XY-Problems are super common. I also sometimes learned something new and that my approach wasn't the best and I'm kinda experienced with Linux. It's usually more the annoying and stupid people who don't want to explain what they're trying to achieve even if asked and insist on going with the path they've chosen without listening to advice.... On the other hand it's a balance. There are also nerds without social skills who don't explain things well. But in my experience it's frequently XY-Problems and the people asking for advice not listening.