I can't find any other reports of this crash so as a first step please try uninstalling all of these extensions:
'wsmat...@martin.zurowietz.de', 'system-moni...@paradoxxx.zero.gmail.com', 'clipboard-indica...@tudmotu.com', 'gTile@vibou', 'user-th...@gnome-shell-extensions.gcampax.github.com' and then tell us if the problem goes away. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871984 Title: gnome-shell crashed with SIGSEGV in st_theme_node_lookup_shadow() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1871984/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs