9

The installed Ubuntu 22.04.1 works fine, but when running the live system (ISO/USB, "Try Ubuntu") there seems to be a problem with unsigned or wrongly signed kernel modules:

modprobe zfs
modprobe: ERROR: could not insert 'zfs': Key was rejected by service

To reproduce:

  • Download ubuntu-22.04.1-desktop-amd64.iso from here
  • Write the ISO file to a USB stick (I've used Fedora Media Writer)
  • Boot from the stick, select USB entry in the grub menu
  • Click the "Try Ubuntu" button
  • Open a terminal
  • Run modprobe zfs
Pilot6
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thorstenhirsch
  • 103

1 Answers1

13

This error is related to secure boot. While you have mentioned in the comments that it was never enabled, it is often turned on by default in the BIOS. You can check with mokutil --sb-state

More info about signing modules can be found in this thread: https://superuser.com/q/1438279

ThankYee
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