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

[Gunnar Hjalmarsson]

To the extent I participated in the resolution of this bug, I had
standard Ubuntu in mind, where the default desktop font can be accessed
like this:

gsettings get org.gnome.desktop.interface font-name

And that's the key whose value is temporarily changed when upgrading to
23.10. But on MATE that does not help, since MATE uses its own schema:

gsettings get org.mate.interface font-name

And since MATE uses the Ubuntu font by default, the issue is identical
to the issue in standard Ubuntu. I think the fix in ubuntu-release-
upgrader can be adjusted so it interacts with the schema which is
actually in use in MATE.

But this makes me wonder if there is a need to special case other
flavors besides MATE.

** Also affects: ubuntu-mate
   Importance: Undecided
       Status: New

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

Title:
  some text became unreadable during a distribution upgrade

Status in Ubuntu MATE:
  New
Status in ubuntu-meta package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged
Status in ubuntu-meta source package in Mantic:
  Fix Released
Status in ubuntu-release-upgrader source package in Mantic:
  Triaged

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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