[Bug 2122276] [NEW] Error messages during updates on Xubuntu 25.10

[Guybrush88]

Public bug reported:

I got these error messages while installing the latest updates on
Xubuntu 25.10:

:~$ update-manager
WARNING:root:can not import unity GI Namespace Dbusmenu not available
update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/local/share/doc /usr/local/share/doc none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/local/share/doc" because it would affect the host in "/var/lib/snapd"
update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/gimp/2.0/help /usr/share/gimp/2.0/help none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/share/gimp/2.0/help" because it would affect the host in "/var/lib/snapd"
update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/sphinx_rtd_theme /usr/share/sphinx_rtd_theme none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/share/sphinx_rtd_theme" because it would affect the host in "/var/lib/snapd"
[Parent 3465, Main Thread] WARNING: Failed to mkdir /home/davide/snap/firefox/6738/.config/ibus/bus: Not a directory: 'glib warning', file /build/firefox/parts/firefox/build/toolkit/xre/nsSigHandlers.cpp:201

(firefox_firefox:3465): IBUS-WARNING **: 13:42:00.854: Failed to mkdir
/home/davide/snap/firefox/6738/.config/ibus/bus: Not a directory

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

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https://bugs.launchpad.net/bugs/2122276

Title:
  Error messages during updates on Xubuntu 25.10

Status in update-manager package in Ubuntu:
  New

Bug description:
  I got these error messages while installing the latest updates on
  Xubuntu 25.10:

  :~$ update-manager
  WARNING:root:can not import unity GI Namespace Dbusmenu not available
  update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/local/share/doc /usr/local/share/doc none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/local/share/doc" because it would affect the host in "/var/lib/snapd"
  update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/gimp/2.0/help /usr/share/gimp/2.0/help none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/share/gimp/2.0/help" because it would affect the host in "/var/lib/snapd"
  update.go:85: cannot change mount namespace according to change mount (/var/lib/snapd/hostfs/usr/share/sphinx_rtd_theme /usr/share/sphinx_rtd_theme none bind,ro 0 0): cannot write to "/var/lib/snapd/hostfs/usr/share/sphinx_rtd_theme" because it would affect the host in "/var/lib/snapd"
  [Parent 3465, Main Thread] WARNING: Failed to mkdir /home/davide/snap/firefox/6738/.config/ibus/bus: Not a directory: 'glib warning', file /build/firefox/parts/firefox/build/toolkit/xre/nsSigHandlers.cpp:201

  (firefox_firefox:3465): IBUS-WARNING **: 13:42:00.854: Failed to mkdir
  /home/davide/snap/firefox/6738/.config/ibus/bus: Not a directory

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