Public bug reported: I am trying to create Packer autoinstall images with EFI boot using the new autoinstaller. With EFI boot mode, I noticed a kernel parameter handling issue.
Starting with a Ubuntu Server 20.04.1 ISO, I can boot the kernel of the ISO by providing the following command line parameter in *BIOS* boot mode: "boot_wait": "5s", "boot_command": [ "<enter><enter><f6><esc><wait> ", "autoinstall ds=nocloud-net;seedfrom=http://{{ .HTTPIP }}:{{ .HTTPPort }}/", "<wait>" ] However, the same approach fails in *EFI* boot mode: "boot_wait": "3s", "boot_command": [ "<esc><wait>", "<esc><wait>", "linux /casper/vmlinuz --- autoinstall ds=nocloud-net;seedfrom=http://{{ .HTTPIP }}:{{ .HTTPPort }}/<enter><wait>", "initrd /casper/initrd<enter><wait>" ] Checking /proc/cmdline, I noticed that in this case it is "... autoinstall ds=nocloud-net". The part after the semicolon is cut off. Fix is to use quotes (") for ds="...". Then, the cmdline of the booted kernel will be correct: "boot_command": [ "<esc><wait>", "<esc><wait>", "linux /casper/vmlinuz --- autoinstall ds=\"nocloud-net;seedfrom=http://{{ .HTTPIP }}:{{ .HTTPPort }}/\"<enter><wait>", "initrd /casper/initrd<enter><wait>" ] ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: grub-efi-amd64-bin 2.04-1ubuntu26.2 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.6 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Thu Aug 20 15:10:56 2020 InstallationDate: Installed on 2020-01-21 (212 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200117.1) SourcePackage: grub2 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub Importance: Undecided Status: New ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ** Also affects: grub Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1892365 Title: Kernel parameter handling issue in EFI boot mode + work-around To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/1892365/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs