It seems like every application from the terminal gives warnings and error messages, even though it appears to run fine.
Emacs:
** (emacs:5004): WARNING **: Couldn't connect to accessibility bus:
Failed to connect to socket /tmp/dbus-xxfluS2Izg: Connection refused
Evince:
** (evince:5052): WARNING **: Couldn't connect to accessibility bus:
Failed to connect to socket /tmp/dbus-xxfluS2Izg: Connection refused
(evince:4985): Gtk-CRITICAL **: gtk_widget_show: assertion
'GTK_IS_WIDGET (widget)' failed
(evince:4985): Gtk-CRITICAL **: gtk_widget_show: assertion
'GTK_IS_WIDGET (widget)' failed
Firefox:
(process:5059): GLib-CRITICAL **: g_slice_set_config: assertion
'sys_page_size == 0' failed
The list goes on. Is this behavior common or is there something wrong with my system? How I fix these issues?
Best Answer
Unfortunately, GTK libraries (used in particular by GNOME) tend to emit a lot of scary-looking messages. Sometimes these messages indicate potential bugs, sometimes they're totally spurious, and it's impossible to tell which is which without delving deep into the code. As an end user, you can't do anything about it. You can report those as bugs (even if the program otherwise behaves correctly, emitting spurious error messages is a bug), but when the program is basically working, these bugs are understandably treated as very low priority.
The accessibility warning is a known bug with an easy workaround if you don't use any accessibility feature:
In my experience,
Gtk-CRITICALbugs are completely spurious; while they do indicate a programming error somewhere, they shouldn't be reported to end-users, only to the developer who wrote the program (or the underlying library — often the developer of the program itself can't do anything about it because it's a bug in a library that's called by a library that's called by a library that's used in the program).