[bigyabai]

I think it's specific to their machine? I've got an old Skylake (6600u) machine with Secure Boot disabled that will last a weekend with the lid closed.

[charcircuit]

This is a general Linux issue. Over the years patches have floated around to address it (like letting people force it to be allowed if their swap is encrypted).

https://man7.org/linux/man-pages/man7/kernel_lockdown.7.html

[Telaneo]

> with Secure Boot disabled

That's why it works for you. Enable secure boot and you lose hibernate.