[Bug 1976585] Re: Ubiquity Installer Crash (Consistently Repeatable)

[Peter]

Hey scott, thanks for the suggestion. Straight from the installer is
failing for me too. Same error. Can you tell me do you have more than
one NVME drive in your computer? I think it may be related perhaps....

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Title:
  Ubiquity Installer Crash (Consistently Repeatable)

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  Ubiquity installer fails with the following steps, booting off a 22.04
  LTS USB.

  Steps to reproduce:
  - Select: *Try or Install Ubuntu [wait for bootup]
  - Select: Try Ubuntu (with English) [wait for boot]
  - Run "Install Ubuntu 22.04 LTS" icon in the top left corner of the screen [Shows Install / Welcome screen]
  - Select English, click on Continue
  - Select English (US) / English (US) for keyboard layout, click on Continue
  - Select Normal Installation, Install thrid-party software, Configute secure boot, entered password, click on Continue
  - Select Erase disk and install Ubuntu, Advanced features..., Erase disk and use ZFS, Encrypt the new Ubuntu installation, click OK, click Install Now
  - Enter a security key, click Install Now
  - View "Write the changes to disks?" (single drive computer, partitions: vfat, swap, bpool, rpool), click Continue
  - View "Where are you?", select Los Angeles, click Continue
  - Installer crashed.

  Looking at /var/log/syslog, I see the following consistently with
  every try:

  Jun  2 04:16:53 ubuntu ubiquity[6225]: switched to page usersetup
  Jun  2 04:16:53 ubuntu ubiquity: Traceback (most recent call last):
  Jun  2 04:16:53 ubuntu ubiquity:   File "/usr/share/ubiquity/install.py", line 769, in <module>
  Jun  2 04:16:53 ubuntu ubiquity:     install = Install()
  Jun  2 04:16:53 ubuntu ubiquity:   File "/usr/share/ubiquity/install.py", line 69, in __init__
  Jun  2 04:16:53 ubuntu ubiquity:     assert os.path.ismount(self.target), \
  Jun  2 04:16:53 ubuntu ubiquity: AssertionError: Failed to mount the target: /target

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubiquity 22.04.15
  ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
  Uname: Linux 5.15.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu82
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.470
  Date: Wed Jun  1 21:17:24 2022
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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