[Bug 2095535] Re: ubuntu-release-upgrader Qt interface segmentation fault

[Simon Quigley]

Please install the qt6-wayland package and re-try. I highly doubt this
is something related to porting, just a missing dependency under
Wayland.

Regardless, please also provide the backtrace from the segfault. This
bug is essentially impossible to track down without it.

Thanks.

** Changed in: update-manager-core (Ubuntu)
       Status: New => Incomplete

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2095535

Title:
  ubuntu-release-upgrader Qt interface segmentation fault

Status in ubuntu-release-upgrader package in Ubuntu:
  Incomplete
Status in update-manager-core package in Ubuntu:
  Incomplete

Bug description:
  This is likely an issue RE: Qt5 vs Qt6. I have reason to believe the
  code is still Qt5 but oracular and higher is Qt6, meaning the code
  needs to be refactored.

  Terminal output:

  $ do-release-upgrade -d -m desktop -f DistUpgradeViewKDE

  Checking for a new Ubuntu release
  localuser:root being added to access control list
  Checking for a new Ubuntu release
  kde
  error: XDG_RUNTIME_DIR is invalid or not set in the environment.
  Failed to create wl_display (No such file or directory)
  qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
  QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
  /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcherCore.py:237: Warning: W:Download is performed unsandboxed as root as file 'plucky.tar.gz.gpg' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
    result = fetcher.run()
  authenticate 'plucky.tar.gz' against 'plucky.tar.gz.gpg'
  extracting 'plucky.tar.gz'
  error: XDG_RUNTIME_DIR is invalid or not set in the environment.
  Failed to create wl_display (No such file or directory)
  qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
  can't load DistUpgradeViewKDE (type object 'QTextOption' has no attribute 'NoWrap')
  can't load DistUpgradeViewGtk3 (Namespace Vte not available)
  can't load DistUpgradeViewKDE (type object 'QTextOption' has no attribute 'NoWrap')

  Reading cache

  Checking package manager
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Hit http://security.ubuntu.com/ubuntu oracular-security InRelease
  Hit http://us.archive.ubuntu.com/ubuntu oracular InRelease
  Hit http://us.archive.ubuntu.com/ubuntu oracular-updates InRelease
  Hit http://us.archive.ubuntu.com/ubuntu oracular-backports InRelease
  Fetched 0 B in 0s (0 B/s)
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Fetched 0 B in 0s (0 B/s)

  Checking for installed snaps

  Calculating snap size requirements

  Updating repository information
  Segmentation fault (core dumped)

  ProblemType: Bug
  DistroRelease: Ubuntu 24.10
  Package: ubuntu-release-upgrader-core 1:24.10.13
  ProcVersionSignature: Ubuntu 6.11.0-13.14-generic 6.11.0
  Uname: Linux 6.11.0-13-generic x86_64
  ApportVersion: 2.30.0-0ubuntu4
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Wed Jan 22 11:15:22 2025
  InstallationDate: Installed on 2024-04-11 (287 days ago)
  InstallationMedia: Ubuntu-Studio 24.04 LTS "Noble Numbat" - Beta amd64 (20240410.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to oracular on 2025-01-22 (0 days ago)
  VarLogDistupgradeAptHistorylog:
   Start-Date: 2025-01-22  11:13:58
   Requested-By: erich (1000)
   End-Date: 2025-01-22  11:13:58
  VarLogDistupgradeAptlog:
   Log time: 2025-01-22 11:13:55.234080
   Log time: 2025-01-22 11:13:57.748196
  VarLogDistupgradeApttermlog:
   Log started: 2025-01-22  11:13:58
   Log ended: 2025-01-22  11:13:58
  VarLogDistupgradeTermlog:

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