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MacOS has no problem with hibernation because hardware and software are designed together: it uses TPM to manage swap encryption. I assume "BIOS" is also optimi
by killerstorm 2mo ago
MacOS has no problem with hibernation because hardware and software are designed together: it uses TPM to manage swap encryption. I assume "BIOS" is also optimized to enable fast boot on sleep.
Linux can work with TPM but it's never as smooth. (Unless I guess you make it custom for your specific setup.)
- cedilla 2mo agoI have FDE with keys in the TPM. It's pretty smooth bit required a one time additional step in Fedora. It's also probably not very secure, but my threat model is simple theft.
- avhception 2mo agoWhat's the benefit of using the TPM compared to a simple passphrase at boot, in that scenario?
- theblazehen 2mo agoA person wouldn't be able to pull the disk to get at the information
- avhception 2mo agoAssuming that the person pulling the disk doesn't have the passphrase, what's the difference?
- theblazehen 2mo agoAssuming things are configured correctly, the TPM would only provide the key to unlock the drive if the correct OS has been booted. Attempting to boot from a live usb to have a look at the data wouldn't work, since the TPM wouldn't present the key required. You can see https://wiki.archlinux.org/title/Trusted_Platform_Module#PCR_policies https://wiki.archlinux.org/title/Trusted_Platform_Module#PCR... for an example of doing so
- cedilla 2mo agoSorry for the late answer: the benefit is that I don't have to enter my passphrase at boot.
- gertop 2mo agoWindows has no problem with hibernation and FDE and it uses a swap file. Windows and Linux run on the exact same hardware. Windows hibernation doesn't rely on secret bios features. Unreliable hibernation is 100% and undeniably a Linux problem, there is no secret advantage or conspiracy to keep it down. It's just that nobody cares enough to make Linux not suck.
- jeroenhd 2mo agoThese days with cryptenroll and friends, using the TPM is hardly an issue anymore. LVM and swapfiles both work well if you just create one large "everything but EFI" encrypted volume. You'd need to keep secure boot on, preferably with your own keys loaded, to get all of the benefits, and that's a bit harder to automate. Windows does all of this and more. It's harder on Linux because of a lack of tooling/interest/business incentives, and because on average Linux users want more control over their hardware than Windows users.