Hey Sam,

As I mentioned in comment #4, this occurred due to the fact a newer
kernel (4.15~94.95), was installed as a result from the dist upgrade. It
would appear that you have enabled -proposed in /etc/apt/sources.list,
which is the reason why in your logs. the 4.15.0-94.95 kernel is trying
to install.

zipl.conf updated the configs to boot from the newly installed kernel.

As a result the linux-fips kernel takes a back seat and is moved up in
the boot order from kernel #0 -> kernel #1


DEBUG -                 Processing triggers for ureadahead (0.100.0-21) ...
DEBUG -                 Processing triggers for ureadahead (0.100.0-21) ...
DEBUG -                 Processing triggers for linux-image-4.15.0-94-generic 
(4.15.0-94.95) ...
DEBUG -                 Processing triggers for linux-image-4.15.0-94-generic 
(4.15.0-94.95) ...
DEBUG -                 /etc/kernel/postinst.d/initramfs-tools:
DEBUG -                 /etc/kernel/postinst.d/initramfs-tools:
DEBUG -                 update-initramfs: Generating 
/boot/initrd.img-4.15.0-94-generic
DEBUG -                 update-initramfs: Generating 
/boot/initrd.img-4.15.0-94-generic
DEBUG -                 Using config file '/etc/zipl.conf'
DEBUG -                 Using config file '/etc/zipl.conf'
DEBUG -                 Building bootmap in '/boot'
DEBUG -                 Building bootmap in '/boot'
DEBUG -                 Adding IPL section 'ubuntu' (default)
DEBUG -                 Adding IPL section 'ubuntu' (default)
DEBUG -                 Preparing boot device: vda (0000).
DEBUG -                 Preparing boot device: vda (0000).
DEBUG -                 Done.
DEBUG -                 Done.
DEBUG -                 /etc/kernel/postinst.d/zz-zipl:
DEBUG -                 /etc/kernel/postinst.d/zz-zipl:
DEBUG -                 Using config file '/etc/zipl.conf'
DEBUG -                 Using config file '/etc/zipl.conf'
DEBUG -                 Building bootmap in '/boot'
DEBUG -                 Building bootmap in '/boot'
DEBUG -                 Adding IPL section 'ubuntu' (default)
DEBUG -                 Adding IPL section 'ubuntu' (default)
DEBUG -                 Preparing boot device: vda (0000).
DEBUG -                 Preparing boot device: vda (0000).
DEBUG -                 Done.
DEBUG -                 Done.
DEBUG -             Leave Shell::ssh


This is not a bug and working as expected, moving testing of thie kernel to 
ckct. 


** Changed in: ubuntu-kernel-tests
       Status: New => Invalid

** Changed in: linux (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1845632

Title:
  After dist-upgrade, s390x running X-fips/B-fips kernel will boot into
  generic kernel

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