This bug was fixed in the package gnome-settings-daemon - 3.29.90.1-1~ubuntu1

---------------
gnome-settings-daemon (3.29.90.1-1~ubuntu1) cosmic; urgency=medium

  * Merge with unreleased Debian version (LP: #1783763). Remaining changes:
    + Split out schemas into gnome-settings-daemon-schemas so
      unity-settings-daemon can use them
    + debian/control.in:
      - Build-depend on accountsservice
      - Bump breaks/replaces for moving files to the -schemas pkg
    + debian/patches:
       - 45_suppress-printer-may-not-be-connected-notification.patch
       - 53_sync_input_sources_to_accountsservice.patch
       - 64_restore_terminal_keyboard_shortcut_schema.patch
       - 70_allow_sound_above_100.patch
       - correct_logout_action.patch
          display the logout action on ctrl-alt-del
       - ubuntu-lid-close-suspend.patch
          Reimplement support for setting lid close suspend actions
       - revert-wacom-migration.patch
       - revert-gsettings-removals.patch
          Revert gsettings keys that were dropped since 3.8, for u-s-d
       - revert-mediakeys-dbus-interface-drop.patch
       - ubuntu_ibus_configs.patch
    + debian/gnome-settings-daemon.install:
      - Install apport hook and upstart scripts
    + debian/gnome-settings-daemon-schemas.install:
      - Install schemas, translations and the rfkill rule
    + Don't install gnome-settings-daemon.gsettings-override
  * debian/gbp.conf: Call the upstream tag pattern 'invalid' so that it
    creates errors - you currently need to pass this manually.
  * debian/patches/70_allow_sound_above_100.patch: Drop - this has been
    implemented upstream now.

gnome-settings-daemon (3.29.90.1-1) UNRELEASED; urgency=medium

  * New upstream release 3.29.90.1
    - Allow volume above 100%
    - Fix improper notify_notification_close() usage
    - Make power test more robust
    - Update test suite to python3
  * debian/control{,.in}:
    + Bump gsettings-desktop-schemas dep to 3.27.90, so we have the key for
      the volume-above-100 stuff.
    + Change python deps to python3, as the testsuite has been ported.
  * debian/patches/0001-power-Make-power-test-more-robust.patch: Drop, applied
    upstream.

gnome-settings-daemon (3.29.0-1) experimental; urgency=medium

  * debian/gbp.conf: Call the upstream tag pattern 'invalid' so that it
    creates errors - you currently need to pass this manually.
  * debian/*: Update for experimental
  * New upstream release 3.29.0
    - Make mic mute key configurable
    - Handle Ctrl+Shift+TouchpadToggle
    - Wait forever for GrabAccelerators to succeed
    - Add SuspendAndHibernate
    - Drop X11-specific code to handle idle times
    - Cancel smooth transitions on color temperature changes
    - Define "disabled until tomorrow" as moving past sunrise
  * debian/patches/0001-power-Make-power-test-more-robust.patch: Cherry-pick
    from upstream master branch - make the tests more robust.
  * debian/rules, debian/control*: Run the tests fatally again and add a BD on
    mutter which is now a requirement.
  * debian/control*: Set Rules-Requires-Root to no, since we don't need root
    for any part of building the package.
  * Standards-Version → 4.1.5

gnome-settings-daemon (3.28.1-1) unstable; urgency=medium

  * New upstream release

 -- Iain Lane <email address hidden>  Fri, 03 Aug 2018 11:33:04 +0100