[Bug 1864293] Re: apt autoremove removes cryptsetup-initramfs which causes boot to drop to initramfs shell on machine with LVM and full disk encryption

[Julian Andres Klode]

This is a regression in ubuntu-mate-meta which earlier added cryptsetup
as a dependency to workaround a bug in ubiquity/livecd-rootfs.

Now that depends got removed, causing the package to become
automatically installed.

It could run apt-mark manual cryptsetup in preinst or somewhere to
reduce the chance of that happening / making it impossible for users
upgrading from down (focal to focal is the real issue, really, as users
might do upgrade --autoremove).

** Package changed: cryptsetup (Ubuntu) => ubuntu-mate-meta (Ubuntu)

** Changed in: ubuntu-mate-meta (Ubuntu)
     Assignee: Julian Andres Klode (juliank) => (unassigned)

** Changed in: ubuntu-mate-meta (Ubuntu)
       Status: Confirmed => Triaged

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Title:
  apt autoremove removes cryptsetup-initramfs which causes boot to drop
  to initramfs shell on machine with LVM and full disk encryption

Status in ubuntu-mate-meta package in Ubuntu:
  Triaged

Bug description:
  Ubuntu Mate 20.04 dev release, upgraded from 19.10. LVM/disk encrypion
  had been set up from the 19.10 installer and had been working
  perfectly.

  Today, when I try to boot, the splash screen stalls at the throbber
  and doesn't open a prompt for my encryption key. After a minute or so
  it drops to the initramfs shell. Rebooting without "silent splash" on
  the cmdline shows that `/dev/mapper/vgubuntu--mate-root` cannot be
  found, and running `ls /dev/mapper` outputs only `control`.

  Rebooting with the 5.4.0-12 kernel works without any problems.

  I've added `mitigations=off` to my default boot flags some time ago,
  if that's relevant?

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-14-generic 5.4.0-14.17
  ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
  Uname: Linux 5.4.0-12-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu17
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  neil       3193 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Sat Feb 22 12:29:27 2020
  InstallationDate: Installed on 2019-10-11 (133 days ago)
  InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Beta amd64 (20190926.2)
  MachineType: LENOVO 2325A39
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-12-generic root=/dev/mapper/vgubuntu--mate-root ro quiet splash mitigations=off
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-12-generic N/A
   linux-backports-modules-5.4.0-12-generic  N/A
   linux-firmware                            1.186
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux-5.4
  UpgradeStatus: Upgraded to focal on 2020-02-07 (15 days ago)
  dmi.bios.date: 06/19/2018
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ETB3WW (2.73 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2325A39
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG2ETB3WW(2.73):bd06/19/2018:svnLENOVO:pn2325A39:pvrThinkPadX230:rvnLENOVO:rn2325A39:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.family: ThinkPad X230
  dmi.product.name: 2325A39
  dmi.product.sku: LENOVO_MT_2325
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO

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