I had this exact issue and posted on a forum somewhere, can't find where I posted but here is what fixed it for me:
Yes Secure Boot was disabled however it was still using the Factory Keys. I had to change it to Setup Keys which reset all the keys in the Bios in order to install. Really hope this helps somebody... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851955 Title: installation fails in grub-install with: efivarfs_set_variable: writing to fd <N> failed: Invalid argument To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/efivar/+bug/1851955/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
