I was able to reproduce the problem by having both the Ubuntu and GNOME session.
1. Login with Ubuntu session 2. Select the Dock settings panel 3. Logout, then back in with GNOME session 4. Launch gnome-control-center It will try to open back the (now non-existent) Dock settings panel and SEGFAULT. It appears to do that when trying to show a non-existent panel. Workaround: 1. Login into Ubuntu session 2. Open Settings, and select a panel that exists on both sessions (so any panel except the Dock it seems) 3. Log back out, and then back into the GNOME session. Now the settings should open without SEGFAULT. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1766799 Title: gnome-control-center (ERROR) ../shell/cc-panel-list.c → 926 → cc_panel_list_set_active_panel → assertion failed → (data != NULL) Status in gnome-control-center package in Ubuntu: In Progress Bug description: The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-control-center. This problem was most recently seen with package version 1:3.28.1-0ubuntu1, the problem page at https://errors.ubuntu.com/problem/73835fe215683e2f5f85df231eb2750a57e96c65 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/ubuntu/+source/gnome-control-center/+bug/1766799/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
