[Bug 1789918] [NEW] /boot/vmlinux-4.17 has invalid signature

[Brad Figg]

Public bug reported:

This is on a cosmic system. I wanted to test the 4.18 kernel in the kernel teams unstable ppa. I enabled that ppa, then ran "sudo apt-get update; sudo apt-get dist-upgrade" and then rebooted. Upon boot grub started reporting that none of the kernels I have installed have valid signatures. These were working just fine before this update. The only remedy was to disable secure boot in my bios.
--- 
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu9
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.10
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-08-14 (380 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170812)
Package: grub2 (not installed)
ProcEnviron:
 TERM=tmux-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
Tags:  wayland-session cosmic
Uname: Linux 4.18.0-7-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip kvm libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected cosmic wayland-session

** Tags added: apport-collected cosmic wayland-session

** Description changed:

- This is on a cosmic system. I wanted to test the 4.18 kernel in the
- kernel teams unstable ppa. I enabled that ppa, then ran "sudo apt-get
- update; sudo apt-get dist-upgrade" and then rebooted. Upon boot grub
- started reporting that none of the kernels I have installed have valid
- signatures. These were working just fine before this update. The only
- remedy was to disable secure boot in my bios.
+ This is on a cosmic system. I wanted to test the 4.18 kernel in the kernel teams unstable ppa. I enabled that ppa, then ran "sudo apt-get update; sudo apt-get dist-upgrade" and then rebooted. Upon boot grub started reporting that none of the kernels I have installed have valid signatures. These were working just fine before this update. The only remedy was to disable secure boot in my bios.
+ --- 
+ ProblemType: Bug
+ ApportVersion: 2.20.10-0ubuntu9
+ Architecture: amd64
+ CurrentDesktop: ubuntu:GNOME
+ DistroRelease: Ubuntu 18.10
+ EcryptfsInUse: Yes
+ InstallationDate: Installed on 2017-08-14 (380 days ago)
+ InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170812)
+ Package: grub2 (not installed)
+ ProcEnviron:
+  TERM=tmux-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
+ Tags:  wayland-session cosmic
+ Uname: Linux 4.18.0-7-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip kvm libvirt lpadmin plugdev sambashare sudo
+ _MarkForUpload: True

-- 
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https://bugs.launchpad.net/bugs/1789918

Title:
  /boot/vmlinux-4.17 has invalid signature

Status in grub2 package in Ubuntu:
  New

Bug description:
  This is on a cosmic system. I wanted to test the 4.18 kernel in the kernel teams unstable ppa. I enabled that ppa, then ran "sudo apt-get update; sudo apt-get dist-upgrade" and then rebooted. Upon boot grub started reporting that none of the kernels I have installed have valid signatures. These were working just fine before this update. The only remedy was to disable secure boot in my bios.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.10-0ubuntu9
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.10
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2017-08-14 (380 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170812)
  Package: grub2 (not installed)
  ProcEnviron:
   TERM=tmux-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
  Tags:  wayland-session cosmic
  Uname: Linux 4.18.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip kvm libvirt lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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