[Bug 1872509] Re: xfwm4 crashed with signal 5 in _XReply()

Sean Davis 1872509 at bugs.launchpad.net
Tue Apr 6 10:38:17 UTC 2021

Attaching debdiff for xfwm4_4.14.5-1ubuntu0.20.04.1, also uploaded to
the Xubuntu SRU Staging PPA:


** Patch added: "xfwm4 debdiff"

** Changed in: xfwm4 (Ubuntu Focal)
       Status: Confirmed => In Progress

** Changed in: xfwm4 (Ubuntu Focal)
     Assignee: (unassigned) => Sean Davis (bluesabre)

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  xfwm4 crashed with signal 5 in _XReply()

Status in xfwm4 package in Ubuntu:
Status in xfwm4 source package in Focal:
  In Progress
Status in xfwm4 source package in Groovy:
  Fix Released

Bug description:

   * Some client applications crash when closing a dialog with the Xfwm4
  compositor off.

  [Test Plan]

   * Disable the Xfwm4 compositor. Settings Manager > Window Manager
  Tweaks > Compositor > Toggle off "Enable Display Compositing".

   * Open Catfish.

   * Open the About dialog.

   * Close the About dialog.

   * Catfish crashes.

   * Once fixes, Catfish will no longer crash.

  [Where problems could occur]

   * Regression potential should be relatively low, as the release
  between 4.14.1 and 4.14.5 are bug releases.

   * With window managers, some changes could lead to different behavior
  and other broken displays. Non-AMD graphics users should also test for

  [Other Info]
   * Please see the Xfwm4 release notes for changes between 4.14.1 and 4.14.5: https://gitlab.xfce.org/xfce/xfwm4/-/blob/xfce-4.14/NEWS#L7-44

  [Original Report]

  Crash in Catfish when closing the about dialog when running with
  compositing off.

  ProblemType: Crash
  DistroRelease: Ubuntu 20.04
  Package: xfwm4 4.14.0-2ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu25
  Architecture: amd64
  CasperVersion: 1.443
  CurrentDesktop: XFCE
  Date: Mon Apr 13 08:16:42 2020
  ExecutablePath: /usr/bin/xfwm4
  LiveMediaBuild: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200409)
  ProcCmdline: xfwm4 --replace --display :0.0 --sm-client-id 2c1491795-ed9c-412d-9ef8-3a11bd50a364
   PATH=(custom, no user)
  Signal: 5
  SourcePackage: xfwm4
   ?? () from /lib/x86_64-linux-gnu/libX11.so.6
   ?? () from /lib/x86_64-linux-gnu/libX11.so.6
   _XReply () from /lib/x86_64-linux-gnu/libX11.so.6
   XSync () from /lib/x86_64-linux-gnu/libX11.so.6
   ?? () from /lib/x86_64-linux-gnu/libgdk-3.so.0
  Title: xfwm4 crashed with signal 5 in _XReply()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo

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