Description of problem: I've just started my computer under fedora/gnome. Version-Release number of selected component: ibus-1.5.20-4.fc30 Additional info: reporter: libreport-2.10.0 backtrace_rating: 4 cmdline: /usr/libexec/ibus-x11 --kill-daemon crash_function: type_check_is_value_type_U executable: /usr/libexec/ibus-x11 journald_cursor: s=ff8f3fbd288a4933bdf9021e75f0b59d;i=741f;b=c76abba75d5548d9861a8814586ac010;m=1e12591;t=58a07500a4ce2;x=253f4c9335d691c kernel: 5.0.17-300.fc30.x86_64 rootdir: / runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 type_check_is_value_type_U at ../gobject/gtype.c:4172 #1 g_type_check_value at ../gobject/gtype.c:4198 #2 parse_border at gtkcssshorthandpropertyimpl.c:399 #3 gtk_css_shorthand_property_parse_value at gtkcssshorthandproperty.c:133 #4 parse_declaration at gtkcssprovider.c:1473 #5 parse_declarations at gtkcssprovider.c:1583 #6 parse_ruleset at gtkcssprovider.c:1615 #7 parse_statement at gtkcssprovider.c:1644 #8 parse_stylesheet at gtkcssprovider.c:1660 #9 gtk_css_provider_load_internal at gtkcssprovider.c:1787 Potential duplicate: bug 1576300
Created attachment 1574805 [details] File: backtrace
Created attachment 1574806 [details] File: cgroup
Created attachment 1574807 [details] File: core_backtrace
Created attachment 1574808 [details] File: cpuinfo
Created attachment 1574809 [details] File: dso_list
Created attachment 1574810 [details] File: environ
Created attachment 1574811 [details] File: exploitable
Created attachment 1574812 [details] File: limits
Created attachment 1574813 [details] File: maps
Created attachment 1574814 [details] File: mountinfo
Created attachment 1574815 [details] File: open_fds
Created attachment 1574816 [details] File: proc_pid_status
(In reply to Arnaud Masson from comment #1) > Created attachment 1574805 [details] > File: backtrace From your backtrace, your theme file /home/amasson/.themes/manjarin-gtk-theme-master/gtk-3.0/gtk.css causes this SEGV. You should report your issue to manjarin-gtk-theme-master .