[Bug 1852844] Re: Nautilus/Files UI requires sudo access to unmount a disk that can be unmounted successfully without sudo using command line

[Sebastien Bacher]

Thanks

** Package changed: nautilus (Ubuntu) => glib2.0 (Ubuntu)

** Changed in: glib2.0 (Ubuntu)
       Status: New => Triaged

** Also affects: glib via
   https://gitlab.gnome.org/GNOME/glib/issues/1942
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1852844

Title:
  Nautilus/Files UI requires sudo access to unmount a disk that can be
  unmounted successfully without sudo using command line

Status in GLib:
  Unknown
Status in glib2.0 package in Ubuntu:
  Triaged

Bug description:
  An external disk device is declared in '/etc/fstab' with 'auto,nofail,users' options:
  UUID=aa083302-...-b66c0715eaf1 /media/ushakov/TOSHIBA_SYSTEM ext4 nodev,nosuid,auto,nofail,users 0 2

  It is then successfully mounted automatically upon being connected.

  It can further be unmounted successfully without `sudo` from command
  line, e.g.: `umount $mount_point`.

  Meanwhile an attempt to unmount this device from Nautilus/Files UI
  results in an "Authentication Required" message: "Authentication is
  required to unmount External USB3.0 (/dev/sdc3) mounted by another
  user".

  The expected Nautilus/Files UI behavior would be that the disk device
  is unmounted silently or just with an non-intrusive notification upon
  a click on the "Unmount" button near the device label.

  Package suspected: nautilus:
  nautilus/bionic-updates,now 1:3.26.4-0~ubuntu18.04.4 amd64 [installed,automatic]

  $ lsb_release -rd
  Description:	Ubuntu 18.04.3 LTS
  Release:	18.04

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: nautilus 1:3.26.4-0~ubuntu18.04.4
  ProcVersionSignature: Ubuntu 5.0.0-35.38~18.04.1-generic 5.0.21
  Uname: Linux 5.0.0-35-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Nov 16 09:50:54 2019
  GsettingsChanges:
   b'org.gnome.nautilus.preferences' b'default-folder-viewer' b"'list-view'"
   b'org.gnome.nautilus.window-state' b'sidebar-width' b'394'
   b'org.gnome.nautilus.window-state' b'geometry' b"'1279x749+193+153'"
   b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'owner', 'group', 'permissions', 'mime_type', 'where', 'date_modified', 'date_modified_with_time', 'date_accessed', 'recency']"
  InstallationDate: Installed on 2019-10-15 (32 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  SourcePackage: nautilus
  UpgradeStatus: No upgrade log present (probably fresh install)
  usr_lib_nautilus:

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