[Bug 1720908] [NEW] Firefox cannot load Flash because of libxul broken dependency

[Alexis Wilke]

Public bug reported:

When I start Firefox version 56 in my console and then go to a page
using Adobe Flash, I get the following errors:

/usr/lib/firefox/plugin-container: symbol lookup error: /usr/lib/firefox/libxul.so: undefined symbol: gdk_screen_get_monitor_workarea
[18352] WARNING: pipe error (114): Connection reset by peer: file /build/firefox-6SoPIC/firefox-56.0+build6/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 353
/usr/lib/firefox/plugin-container: symbol lookup error: /usr/lib/firefox/libxul.so: undefined symbol: gdk_screen_get_monitor_workarea
[18352] WARNING: pipe error (94): Connection reset by peer: file /build/firefox-6SoPIC/firefox-56.0+build6/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 353
/usr/lib/firefox/plugin-container: symbol lookup error: /usr/lib/firefox/libxul.so: undefined symbol: gdk_screen_get_monitor_workarea
[18352] WARNING: pipe error (41): Connection reset by peer: file /build/firefox-6SoPIC/firefox-56.0+build6/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 353

Each time the problem is the same: gdk_screen_get_monitor_workarea is
undefined. Gnome marked that function as deprecated, but Firefox version
55 worked just fine, whereas Firefox 56 fails with Flash.

https://developer.gnome.org/gdk3/stable/GdkScreen.html#gdk-screen-get-
monitor-workarea

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 56.0+build6-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-96.119-generic 4.4.83
Uname: Linux 4.4.0-96-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  alexis    24733 F.... pulseaudio
 /dev/snd/controlC0:  alexis    24733 F.... pulseaudio
BuildID: 20170928135459
Channel: Unavailable
CurrentDesktop: Unity
Date: Mon Oct  2 17:05:32 2017
ExecutablePath: /usr/lib/firefox/firefox
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2010-12-27 (2471 days ago)
InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-33216e86-e3b0-440b-a25a-2754b1171002
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=56.0/20170928135459 (In use)
RfKill:
 
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: Upgraded to xenial on 2016-05-20 (500 days ago)
dmi.bios.date: 09/16/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F14
dmi.board.name: P55A-UD4P
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF14:bd09/16/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55A-UD4P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55A-UD4P:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P55A-UD4P
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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Title:
  Firefox cannot load Flash because of libxul broken dependency

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