It appears from the screenshot the panic is occurring because the
initramfs /init script is failing to find and mount the real root file-
system.

You can drop to a busybox shell in the initramfs by adding a kernel-
command line option manually in the GRUB boot menu.

Tap Esc key to get to the GRUB menu, highlight the default entry, press
'e' to edit it, navigate down to the line beginning "linux ..." and add
the option "break=premount" then press Ctrl+X (or F10) to immediately
boot with this change.

This should drop you into the busbyox initramfs shell so you can
investigate where the root-fs is.

Start with "cat /proc/cmdline" and then verify the root= device actually
exists.

There are other points to break= at; On an working system identify them
with:

grep maybe_break /usr/share/initramfs-tools/init

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1829805

Title:
  Lubuntu Eoan Daily Image fails to boot after install on KVM

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Context: The live environment appears to function properly and install
  proceeds as expected with no noticeable errors.

  Expected results: After a system reboot the virtual machine enters the
  graphical environment

  Actual Results: After rebooting the virtual machine a kernel panic
  error screen appears. I will attempt to attach the screenshot after
  submitting this bug report.

  The collected data is from the live environment as the installed
  environment will not boot.

  lubuntu@lubuntu:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu Eoan Ermine (development branch)
  Release:        19.10
  Codename:       eoan

  lubuntu@lubuntu:~$ apt-cache policy grub2
  grub2:
    Installed: (none)
    Candidate: 2.02+dfsg1-12ubuntu2
    Version table:
       2.02+dfsg1-12ubuntu2 500
          500 cdrom://Lubuntu 19.10 _Eoan Ermine_ - Alpha amd64 (20190519) 
eoan/universe amd64 Packages
          500 http://archive.ubuntu.com/ubuntu eoan/universe amd64 Packages

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
  Uname: Linux 5.0.0-13-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  CasperVersion: 1.407
  CurrentDesktop: LXQt
  Date: Tue May 21 00:30:39 2019
  LiveMediaBuild: Lubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190519)
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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