Thanks! Unfortunally not possible to switch to legacy boot like this. Also I think I've read somewhere that efivars can only be accessed from a uefi boot session.
No I have not set something like "efi_no_storage_paranoia". It was a standard ubuntu 20.04 installation with tlp installed from the official package sources. Same on my two brothers laptops. From the dpkg.log of my brother: `2022-01-20 09:55:50 install linux-image-5.13.0-27-generic:amd64 <keine> 5.13.0-27.29~20.04.1` This was when the error message started to appear. On my laptop the day before I was locked out, I did a copy of the /sys/firmware/efi/efivars folder. Would that help you? The only thing is, that when copying these files using nautilus, the dump-* files could not be copied. They became empty files, although they were about 10-20kB. The other files are 19.4kB. Do you know a way to find out the total available size of the NVRAM? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953261 Title: kernel >= 5.13 BUG: kernel NULL pointer dereference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi-call/+bug/1953261/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
