[Bug 1871689] [NEW] Installer hangs idle before populating root-fs with directories, "Saving installed packages..."

[TJ]

Public bug reported:

Trying to install the Xubuntu 20200408 amd64 ISO from USB, Try (safe
graphics mode) on Lenovo E495 (AMD Ryzen 7 mobile CPU) - not sure if the
CPU might have something to do with this but probably not.

Nothing obvious in the logs I've checked.

Currently the system has been sitting idle for almost 2 hours with the
ubiquity GUI showing "Saving installed packages...".

The root file-system directory structure hasn't been created:

root at xubuntu:~# mount | grep rootfs
/dev/mapper/ELLOE00-rootfs on /tmp/tmp.woX6753mbL type ext4 (rw,relatime)

root at xubuntu:~# find /tmp/tmp.woX6753mbL/
/tmp/tmp.woX6753mbL/
/tmp/tmp.woX6753mbL/lost+found

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.9
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu24
Architecture: amd64
CasperVersion: 1.443
Date: Wed Apr  8 19:36:52 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed quiet splash ---
LiveMediaBuild: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200408)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal ubiquity-20.04.9 xubuntu

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https://bugs.launchpad.net/bugs/1871689

Title:
  Installer hangs idle before populating root-fs with directories,
  "Saving installed packages..."

Status in ubiquity package in Ubuntu:
  New

Bug description:
  Trying to install the Xubuntu 20200408 amd64 ISO from USB, Try (safe
  graphics mode) on Lenovo E495 (AMD Ryzen 7 mobile CPU) - not sure if
  the CPU might have something to do with this but probably not.

  Nothing obvious in the logs I've checked.

  Currently the system has been sitting idle for almost 2 hours with the
  ubiquity GUI showing "Saving installed packages...".

  The root file-system directory structure hasn't been created:

  root at xubuntu:~# mount | grep rootfs
  /dev/mapper/ELLOE00-rootfs on /tmp/tmp.woX6753mbL type ext4 (rw,relatime)

  root at xubuntu:~# find /tmp/tmp.woX6753mbL/
  /tmp/tmp.woX6753mbL/
  /tmp/tmp.woX6753mbL/lost+found

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.9
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu24
  Architecture: amd64
  CasperVersion: 1.443
  Date: Wed Apr  8 19:36:52 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed quiet splash ---
  LiveMediaBuild: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200408)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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