[Bug 1870614] Re: Unable to boot ubuntu 19.10 or newer on dell xps 9570

[Ubuntu Foundations Team Bug Bot]

** Package changed: ubuntu => ubuntu-release-upgrader (Ubuntu)

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https://bugs.launchpad.net/bugs/1870614

Title:
  Unable to boot ubuntu 19.10 or newer on dell xps 9570

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Hi,

  Since updating my dell xps 9570 (latest BIOS 1.15.0 and a few previous
  versions) from 19.04 to 19.10 I have been unable to boot ubuntu. It
  fails with the following error quickly flashing:

    error: file `/boot/` not found

  Then followed by:

    error: cannot allocate kernel buffer.
    error: you need to load the kernel first.

    press any key to continue...
   
  This occurs when doing an update from 19.04 to 19.10 and also when just booting off a usb drive with 19.10.

  When booting off the usb drive. The first error flashes quickly before
  displaying the usb installer options. Selecting any install / boot
  option results in the second error about kernel buffer.

  I have tried all combinations of bios settings I can think of, such as
  toggling secure boot and other options. The only thing that made a
  difference is booting via USB with LEGACY EXTERNAL DEVICE BOOT. This
  allows the installer to complete, but I cannot then boot off the hard
  drive.

  I have tried the same USB drive with 19.10 on a Dell XPS 7590 with
  BIOS 1.2.3 and the USB stick boots fine. I have also tried many
  different USB drives on my 9570.

  I have tried a few daily builds of 20.04 with the same result. I
  tested with 20.04 beta as well.

  Note: 19.04 and earlier continues to work no problem.

  I have asked for help previously:

  * https://askubuntu.com/questions/1183129/19-10-usb-installer-boot-fail
  * https://answers.launchpad.net/ubuntu/+question/689546/+index

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: ubuntu-release-upgrader-core 1:19.04.16.9
  ProcVersionSignature: Ubuntu 5.0.0-38.41-generic 5.0.21
  Uname: Linux 5.0.0-38-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.10-0ubuntu27.3
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Apr  4 06:55:59 2020
  InstallationDate: Installed on 2019-10-24 (162 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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