[Bug 1851383] Re: disk format hang during install of 19.10 in KVM virtual machine

[Tom Horsley]

Just tried a new experiment: I attached the new qcow2 image to a
different virtual machine, used gnome-disks to create a MSDOS partition
table, one large ext4 partition and a small swap area, then detached the
image from that VM and used it for the install of the new ubuntu 19.10
virtual machine. I selected custom disk configuration and just told it
to install on the existing ext4 partition, mounting it as /. It appeared
to install correctly (with one mysterious error about not being able to
restore previously installed apps).

It is however, now taking forever to boot from the virtual disk. I just
get animated dots under the word "ubuntu". If I hit ESC it appears to
have advanced one or two steps each time, but it is almost like it will
only advance the boot if I keep hitting ESC over and over. Or perhaps it
is in a loop desperately trying to start GDM over and over on a virtual
display which probably doesn't support wayland.

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https://bugs.launchpad.net/bugs/1851383

Title:
  disk format hang during install of 19.10 in KVM virtual machine

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I'm trying to install a KVM virtual machine using the ubuntu 19.10
  live iso. It always gets as far as the step where it is going to
  format the blank disk (in this case a newly created qcow2 image with a
  20G size limit). I then see the virtual machine go to 100% cpu usage
  and the installer goes completely unresponsive.

  I've tried this on a centos 7 host and a fedora 31 host with the same
  result on both.

  I've tried telling it to let me customise the partitions and letting
  it automatically create partitions with the same result - 100% cpu
  loop and hung unresponsive interface (sometimes a black screen,
  sometimes the partition tool, but not responding).

  The specific iso file is ubuntu-19.10-desktop-amd64.iso. I've checked
  the checksums and verified the signature, so it doesn't seem to be
  corrupted.

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