[Bug 2141637] ProcCpuinfoMinimal.txt

[thomas moore]

apport information

** Attachment added: "ProcCpuinfoMinimal.txt"
   https://bugs.launchpad.net/bugs/2141637/+attachment/5945560/+files/ProcCpuinfoMinimal.txt

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https://bugs.launchpad.net/bugs/2141637

Title:
  ImportError: cannot import name 'inhibit_sleep' from
  'DistUpgrade.utils' during 25.10 to 26.04 upgrade

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

Bug description:
  While attempting an upgrade to the Ubuntu 26.04 "Resolute Raccoon"
  development branch using do-release-upgrade -d, the process fails
  immediately after downloading the upgrader tarball due to a Python
  ImportError.

  Steps to reproduce:

      Run sudo do-release-upgrade -d on an Ubuntu 25.10 system.
      The upgrader downloads the "resolute" tarball to /tmp.
      The process crashes before the UI initializes.

  Expected Behavior:
  The upgrader should initialize and begin the "Calculating Changes" phase.
  Actual Behavior:
  A Traceback occurs because DistUpgradeController.py attempts to import inhibit_sleep from DistUpgrade.utils, but that function is missing from the utils.py file in the current Resolute archive.

      Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-XXXXXX/resolute", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-XXXXXX/DistUpgrade/DistUpgradeMain.py", line 222, in main
      from .DistUpgradeController import DistUpgradeController
    File "/tmp/ubuntu-release-upgrader-XXXXXX/DistUpgrade/DistUpgradeController.py", line 43, in <module>
      from .utils import (..., inhibit_sleep)
  ImportError: cannot import name 'inhibit_sleep' from 'DistUpgrade.utils'
  --- 
  ProblemType: Bug
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CrashReports:
   640:1000:111:20172:2026-02-12 20:19:35.950762602 +1300:2026-02-12 20:19:35.945762602 +1300:/var/crash/_usr_share_kconf_update_migrate-calendar-to-plugin-id.py.1000.crash
   640:0:111:47383:2026-02-12 20:49:12.870481253 +1300:2026-02-12 20:27:39.195764930 +1300:/var/crash/_usr_bin_do-release-upgrade.0.crash
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 25.10
  InstallationDate: Installed on 2026-02-12 (0 days ago)
  InstallationMedia: Kubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
  Package: ubuntu-release-upgrader (not installed)
  ProcVersionSignature: Ubuntu 6.17.0-14.14-generic 6.17.9
  Tags: questing wayland-session dist-upgrade
  Uname: Linux 6.17.0-14-generic x86_64
  UpgradeStatus: Upgraded to questing on 2026-02-12 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  VarLogDistupgradeAptlog:
   Log time: 2026-02-12 20:49:03.059827
   Log time: 2026-02-12 20:49:03.995369
  _MarkForUpload: True

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