Clarifying from a Desktop perspective. Upstream isn't going to care about the issue because GTK3 isn't actively maintained at this point and it's not a 'real world issue' in the sense of it's an error that is hit when the session closes in an unprompted manner, which means no user would see a visible consequence if it wasn't the crash handler catching it.
It's a situation that should ideally be resolved and Robert tried to fix it but the patch needs more work and it's lower priority than other items so we didn't get to investigate more yet. One other way would be to teach apport to ignore issues on session closing (which I think was done some years ago but maybe that isn't working anymore?) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apport in Ubuntu. https://bugs.launchpad.net/bugs/1842439 Title: apport-gtk crashed with SIGSEGV in _gtk_settings_get_screen(settings=0x0) from gtk_css_value_icon_theme_compute() from gtk_css_static_style_compute_value() Status in apport package in Ubuntu: Invalid Status in gtk+3.0 package in Ubuntu: Triaged Status in apport source package in Focal: Invalid Status in gtk+3.0 source package in Focal: Triaged Status in apport source package in Lunar: Invalid Status in gtk+3.0 source package in Lunar: Triaged Bug description: Steps to reproduce ------------------ 1. Use GNOME with GNOME shell 2. killall -11 gnome-shell Suspicious Apport log: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files Error tracker ------------- https://errors.ubuntu.com/problem/815a179408135a894bbb5921adef3757563c75c5 https://errors.ubuntu.com/problem/276759c7bf0b6628977c63ca70d26b53c9defd22 Stack trace ----------- Python: ``` File "apport-gtk", line 703, in <module> app = GTKUserInterface(sys.argv) File "apport-gtk", line 68, in GTKUserInterface.__init__ self.widgets.add_from_file( os.path.join(os.path.dirname(argv[0]), "apport-gtk.ui") ) ``` StacktraceTop: _gtk_settings_get_screen (settings=0x0) at ../../../../gtk/gtksettings.c:3319 gtk_css_value_icon_theme_compute (icon_theme=<optimized out>, property_id=<optimized out>, provider=<optimized out>, style=<optimized out>, parent_style=<optimized out>) at ../../../../gtk/gtkcssiconthemevalue.c:84 gtk_css_static_style_compute_value (style=0x1e7c320, provider=0x0, parent_style=0x0, id=3, specified=0x7f53258b9b20 <inherit>, section=0x0) at ../../../../gtk/gtkcssstaticstyle.c:237 _gtk_css_lookup_resolve (lookup=lookup@entry=0x1e7e790, provider=provider@entry=0x0, style=style@entry=0x1e7c320, parent_style=parent_style@entry=0x0) at ../../../../gtk/gtkcsslookup.c:122 gtk_css_static_style_new_compute (provider=provider@entry=0x0, matcher=matcher@entry=0x0, parent=parent@entry=0x0) at ../../../../gtk/gtkcssstaticstyle.c:195 Original report --------------- Session suddenly stopped and came back to login screen, all opened windows lost. ProblemType: Crash DistroRelease: Ubuntu 19.10 Package: apport-gtk 2.20.11-0ubuntu7 ProcVersionSignature: Ubuntu 5.2.0-15.16-generic 5.2.9 Uname: Linux 5.2.0-15-generic x86_64 ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 CrashReports: 640:1000:117:7292709:2019-09-03 16:20:13.909392833 +0200:2019-09-03 16:20:14.909392833 +0200:/var/crash/_usr_share_apport_apport-gtk.1000.crash 640:1000:117:48937942:2019-09-03 16:20:11.681426286 +0200:2019-09-03 16:20:12.681426286 +0200:/var/crash/_usr_bin_gnome-shell.1000.crash 640:1000:117:32054:2019-08-27 17:39:07.125607490 +0200:2019-08-28 12:36:17.087672961 +0200:/var/crash/_usr_bin_dbus-daemon.1000.crash CurrentDesktop: ubuntu:GNOME Date: Tue Sep 3 16:20:13 2019 ExecutablePath: /usr/share/apport/apport-gtk InstallationDate: Installed on 2018-06-16 (443 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180611) InterpreterPath: /usr/bin/python3.7 PackageArchitecture: all ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash Python3Details: /usr/bin/python3.7, Python 3.7.4, python3-minimal, 3.7.3-1 PythonDetails: /usr/bin/python2.7, Python 2.7.16+, python-minimal, 2.7.16-1 SegvAnalysis: Segfault happened at: 0x7f532548f8c4: mov 0x18(%rdi),%rax PC (0x7f532548f8c4) ok source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)! destination "%rax" ok SegvReason: reading NULL VMA Signal: 11 SourcePackage: apport StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 Title: apport-gtk crashed with SIGSEGV UpgradeStatus: Upgraded to eoan on 2019-06-10 (84 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo separator: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1842439/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
