Ubuntu
gnome-shell package

  1. Bug #1877774
  2. Comment #14

Comment 14 for bug 1877774

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: gnome-shell crashed with SIGSEGV in _st_theme_node_ensure_background() from st_theme_node_paint_equal() from st_widget_recompute_style() from st_widget_style_changed() [when locking the screen]

Try removing your extensions. The crash generally seems to happen for people who are using non-Ubuntu extensions.