[Bug 1854839] Re: Fresh Bionic install hangs forever at 66% waiting for os-prober

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please execute the following command only once, as it
will automatically gather debugging information, in a terminal:

apport-collect 1854839

Please execute this on one box that had this issue.  It'll provide some
hardware details and hopefully some clues as to the issue.

When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to debian-installer in Ubuntu.
https://bugs.launchpad.net/bugs/1854839

Title:
  Fresh Bionic install hangs forever at 66% waiting for os-prober

Status in debian-installer package in Ubuntu:
  New

Bug description:
  Installing Ubuntu 18.04 cleanly on boxes that have 14.04, the
  installer hangs at the end during "update grub" at 66%, forever, until
  I switch to another console and kill the pid of "dmsetup".  Issue is
  described in more detail here:
  https://jrs-s.net/2019/05/31/ubuntu-18-04-hung-at-update-grub-66/  .
  I am doing a netboot preseed install using the 4.15.0-62 kernel and
  initrd from October 2019.  When provisioning ~15 boxes at a time, 90%
  - 100% of them are afflicted by this.  If I power cycle them and PXE
  them into the installer again when hung they usually run to
  completion.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1854839/+subscriptions