[Bug 2034986] Re: some text became unreadable during a distribution upgrade

[Steve Langasek]

On Tue, Sep 26, 2023 at 09:38:21PM -0000, Gunnar Hjalmarsson wrote:
> If I was in a nitpicking mode I would mention that the unreadable
> character problem also affects the desktop itself and possible open
> programs (even if the latter is advised against). So it's not obvious to
> me that the approach you mention would be better.

It does, which is why improved robustness in the font libraries is
preferred.  But without an improvement there, the most we can hope for is to
ensure the upgrader itself remains usable to let the upgrade complete and
allow the user to reboot to the updated system.

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https://bugs.launchpad.net/bugs/2034986

Title:
  some text became unreadable during a distribution upgrade

Status in ubuntu-meta package in Ubuntu:
  Confirmed
Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress
Status in ubuntu-meta source package in Mantic:
  Confirmed
Status in ubuntu-release-upgrader source package in Mantic:
  In Progress

Bug description:
  I was upgrading from Lunar to Mantic the other day and left a couple
  of applications open during the upgrade process. During the upgrade
  the text in audacious became unreadable (I'll attach a screenshot) and
  I seem to recall the title bar of Firefox being unreadable but the
  contents of web pages still being readable.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.10
  Package: ubuntu-release-upgrader-core 1:23.10.5
  ProcVersionSignature: Ubuntu 6.5.0-4.4-generic 6.5.0
  Uname: Linux 6.5.0-4-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia zfs
  ApportVersion: 2.27.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Sep  8 15:39:27 2023
  InstallationDate: Installed on 2018-08-10 (1855 days ago)
  InstallationMedia: Ubuntu-Server 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to mantic on 2023-09-06 (2 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz: Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 126: Error executing command as another user: Request dismissed
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.meta-release: 2021-05-27T16:30:16.970490

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