[Bug 2139323] [NEW] For update-manager there is no update but it is wrong

[Andrei Cherniaev]

Public bug reported:

For update-manager point of view there is no update but I still have notification about new updates on the top panel: "There are 7 updates available". This notification is also wrong, but close to trues because in fact 16 updates available:
```
$ sudo apt update && sudo apt upgrade 
Hit:1 http://kr.archive.ubuntu.com/ubuntu questing InRelease
Hit:2 http://kr.archive.ubuntu.com/ubuntu questing-updates InRelease
Hit:3 http://kr.archive.ubuntu.com/ubuntu questing-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu questing-security InRelease
17 packages can be upgraded. Run 'apt list --upgradable' to see them.
Upgrading:                      
  libegl-mesa0  libegl-mesa0:i386  libegl1-mesa-dev  libgbm-dev  libgbm1  libgbm1:i386  libgl1-mesa-dri  libgl1-mesa-dri:i386  libglx-mesa0  libglx-mesa0:i386  mesa-libgallium  mesa-libgallium:i386  mesa-vdpau-drivers  mesa-vdpau-drivers:i386  mesa-vulkan-drivers  mesa-vulkan-drivers:i386

Not upgrading yet due to phasing:
  sudo-rs

Summary:
  Upgrading: 16, Installing: 0, Removing: 0, Not Upgrading: 1
  Download size: 56.9 MB
  Space needed: 133 kB / 242 GB available
```

This problem exists even after I click to "Install Now" button several
times, I still see wrong text "There are 7 updates available" and
update-manager notification that "The software on this computer is up to
date."

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: update-manager 1:25.10.1
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Jan 29 12:48:33 2026
InstallationDate: Installed on 2024-08-19 (528 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: update-manager
UpgradeStatus: Upgraded to questing on 2025-11-19 (71 days ago)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing wayland-session

** Attachment added: "For update-manager there is no update but it is wrong.png"
   https://bugs.launchpad.net/bugs/2139323/+attachment/5941348/+files/For%20update-manager%20there%20is%20no%20update%20but%20it%20is%20wrong.png

-- 
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https://bugs.launchpad.net/bugs/2139323

Title:
  For update-manager there is no update but it is wrong

Status in update-manager package in Ubuntu:
  New

Bug description:
  For update-manager point of view there is no update but I still have notification about new updates on the top panel: "There are 7 updates available". This notification is also wrong, but close to trues because in fact 16 updates available:
  ```
  $ sudo apt update && sudo apt upgrade 
  Hit:1 http://kr.archive.ubuntu.com/ubuntu questing InRelease
  Hit:2 http://kr.archive.ubuntu.com/ubuntu questing-updates InRelease
  Hit:3 http://kr.archive.ubuntu.com/ubuntu questing-backports InRelease
  Hit:4 http://security.ubuntu.com/ubuntu questing-security InRelease
  17 packages can be upgraded. Run 'apt list --upgradable' to see them.
  Upgrading:                      
    libegl-mesa0  libegl-mesa0:i386  libegl1-mesa-dev  libgbm-dev  libgbm1  libgbm1:i386  libgl1-mesa-dri  libgl1-mesa-dri:i386  libglx-mesa0  libglx-mesa0:i386  mesa-libgallium  mesa-libgallium:i386  mesa-vdpau-drivers  mesa-vdpau-drivers:i386  mesa-vulkan-drivers  mesa-vulkan-drivers:i386

  Not upgrading yet due to phasing:
    sudo-rs

  Summary:
    Upgrading: 16, Installing: 0, Removing: 0, Not Upgrading: 1
    Download size: 56.9 MB
    Space needed: 133 kB / 242 GB available
  ```

  This problem exists even after I click to "Install Now" button several
  times, I still see wrong text "There are 7 updates available" and
  update-manager notification that "The software on this computer is up
  to date."

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: update-manager 1:25.10.1
  ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
  Uname: Linux 6.17.0-8-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jan 29 12:48:33 2026
  InstallationDate: Installed on 2024-08-19 (528 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to questing on 2025-11-19 (71 days ago)

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