This bug was fixed in the package mutter -
3.32.2+git20190711-2ubuntu1~19.04.1

---------------
mutter (3.32.2+git20190711-2ubuntu1~19.04.1) disco; urgency=medium

  * No-change backport from disco to eoan.

mutter (3.32.2+git20190711-2ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190711-2) experimental; urgency=medium

  * d/p/window-x11-Focus-a-window-in-the-active-workspace-as-take.patch:
    - Fix possible crash on closing Java dialogs (Related to LP: #1834583)
    d/p/metatest-Dispatch-the-destruction-instead-of-sleeping-aft.patch:
    - Tests: don't wait too much after window destruction, causing failures

mutter (3.32.2+git20190711-1ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190711-1) experimental; urgency=medium

  * New upstream snapshot up to commit ccab0f470
    - Fix No-input WM_TAKE_FOCUS dialogs causing GNOME Shell to hang
      and ensure we always have a window focused if we have a valid
      focus canididate (LP: #1834583)
    - Don't crash on shell close / reload under X11 when releasing
      surface actor display resources (LP: #1826918)
  * d/p/debian/Revert-meson-Bump-meson-requirement-to-0.50.0.patch:
    - Revert dependency on meson 0.50.0

mutter (3.32.2+git20190626-1ubuntu1~19.04.1) disco; urgency=medium

  * No-change backport from eoan to disco for SRU.

mutter (3.32.2+git20190626-1ubuntu1) eoan; urgency=medium

  * Merge with debian (LP: #1834493). Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190626-1) experimental; urgency=medium

  * New upstream snapshot release:
    - Don't crash when try to focus unfocusable windows (LP: #1791574)
    - Valgrind use-after-free warning fixes in the native backend
    - renderer/native: add missing eglTerminate in EGLDevice error path
    - Fix Alt+F2 -> restart to work again in X11
    - window: Emit an error and return when trying to activate an unmanaged
      (LP: #1827401)
    - Setting cursor to "none" doesn't hide it under Wayland
    - Fix broken selected text in entries
    - Tests memory fixes

mutter (3.32.2-1ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2-1) experimental; urgency=medium

  * New upstream release
  * d/p/clutter-evdev-disable-mousekeys-with-Numlock-ON.patch,
    d/p/clutter-x11-disable-mousekeys-with-Numlock-ON.patch,
    d/p/compositor-Destroy-window-actors-list-on-destruction.patch,
    d/p/compositor-Disconnect-from-stage-signals-on-destruction.patch,
    d/p/input-settings-Use-0-initialized-struct-for-kbd-a11y.patch:
    - Dropped, merged upstream.
  * d/p/meson-add-back-default_driver-option.patch:
    - Refreshed

 -- Iain Lane <[email protected]>  Sun, 21 Jul 2019 20:51:33 +0100

** Changed in: mutter (Ubuntu Disco)
       Status: Fix Committed => Fix Released

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1826918

Title:
  gnome-shell crashed with SIGSEGV in meta_x11_display_get_xdisplay()
  from detach_pixmap() from meta_surface_actor_x11_dispose() from
  g_object_unref() from g_object_unref()

Status in GNOME Shell:
  Fix Released
Status in gnome-shell package in Ubuntu:
  Triaged
Status in mutter package in Ubuntu:
  Fix Released
Status in mutter source package in Disco:
  Fix Released

Bug description:
  [ Description ]

  GNOME Shell crashes during tear-down when some window is anymating
  under X11.

  [ Test case ]

  This test doesn't work 100% of the cases, so for proper checks we can
  still monitor the e.u.c reports.

  Run this script in a terminal (needs apt install wmctrl):

    active=$(wmctrl -l | head -n1 | cut -f1 -d' '); \
      while true; \
      do wmctrl -ir $active -b remove,maximized_vert,maximized_horz && \
      sleep 0.4 && wmctrl -ir $active -b add,maximized_vert,maximized_horz; \
      sleep 0.4; done

  While the app is maximizing/unmaximixing, do:
    - Alt+f2 -> write: "debugexit" and press enter.

  GNOME Shell should exit without crashing.

  [ Regression potential ]

  Windows animation doesn't work properly when a window is destroyed.

  
  ---

  The Ubuntu Error Tracker has been receiving reports about a problem regarding 
gnome-shell.  This problem was most recently seen with package version 
3.32.0+git20190410-1ubuntu1, the problem page at 
https://errors.ubuntu.com/problem/1a5d1f99fd9215f7a79b718d2e915c675ebcd69f 
contains more details, including versions of packages affected, stacktrace or 
traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software 
developer, you can request it at http://forms.canonical.com/reports/.

To manage notifications about this bug go to:
https://bugs.launchpad.net/gnome-shell/+bug/1826918/+subscriptions

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