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[Launchpad Bug Tracker <1351890@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gtk+2.0 - 2.24.10-0ubuntu6.2

---------------
gtk+2.0 (2.24.10-0ubuntu6.2) precise; urgency=low

  * fix_gdk_event_apply_filters.patch: new patch. Makes gdk_event_apply_filters
    function safe against changes in the filter list, prevents weird crashes in
    various apps. (LP: #1351890)
  * gdk-Fix-GdkWindowFilter-internal-refcounting.patch,
    gdkwindow-Fix-event-unref-iteration.patch: new patches. Fix refcounting
    errors after fix_gdk_event_apply_filters.patch, prevent crashes in some
    applications like Spotify.

 -- Vlad Orlov <monsta@xxxxxxxx>  Tue, 28 Jul 2015 10:11:37 +0100

** Changed in: gtk+2.0 (Ubuntu Precise)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1351890

Title:
  Changing external screen resolution with dual monitors

Status in GTK+:
  Fix Released
Status in ubuntu-mate:
  Fix Released
Status in gtk+2.0 package in Ubuntu:
  Fix Released
Status in mate-control-center package in Ubuntu:
  Fix Released
Status in gtk+2.0 source package in Precise:
  Fix Released
Status in gtk+2.0 source package in Trusty:
  Fix Committed
Status in gtk+2.0 package in Debian:
  Fix Released

Bug description:

  [Impact]

  Due to a bug in GTK+2, mate-display-properties crashes when the screen
  resolution is changed *outside* of it (e.g. by changing the resolution
  not via that app, but somewhere else).

  The attached patches fix the issue in GTK+2 and prevent crashing of
  m-d-p.

  Since this issue caused much inconvenience for users, the fix should
  be backported to all current stable releases of Ubuntu.

  [Test Case]

  The easiest way to reproduce it is via Virtualbox:

  1. Run mate-display-properties in the VM.
  2. Make the VM go full-screen.
  3. See m-d-p crash.

  [Regression Potential]

  After several months of testing the patched version of GTK+2 in Debian Jessie, I found no regressions.
  I consider the regression risk very low here.

  There were originally some bugs with a few applications (notably
  Spotify) crashing. We think we've backported patches to fix that -
  some refcounting issues - but please check a few apps to see they
  still work.

  [ Original report ]

  Changing extrnal screen resolution with dual mon

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: mate-control-center 1.8.1+dfsg1-4
  ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7
  Uname: Linux 3.16.0-6-generic i686
  ApportVersion: 2.14.5-0ubuntu3
  Architecture: i386
  CrashCounter: 1
  Date: Sun Aug  3 07:09:21 2014
  ExecutablePath: /usr/bin/mate-display-properties
  InstallationDate: Installed on 2014-08-03 (0 days ago)
  InstallationMedia: Ubuntu MATE 14.10 "Utopic Unicorn" - Alpha i386 (20140731)
  ProcCmdline: mate-display-properties
  SegvAnalysis: Skipped: missing required field "Disassembly"
  Signal: 11
  SourcePackage: mate-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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