Is there a better place to report these? Which Bugzilla? For Fedora? Which component? check out the logs:

mate-session[20087]: WARNING: Failed to acquire org.gnome.SessionManager Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged. mate-session[20087]: Gtk-CRITICAL: gtk_main_quit: assertion 'main_loops != NULL' failed mate-session[20087]: WARNING: keycode1 not existent mate-session[20087]: WARNING: keycode2 not existent mate-session[20087]: WARNING: GSIdleMonitor: IDLETIME counter not found mate-session[20087]: GLib-GObject-CRITICAL: object GSIdleMonitor 0x56509ee55210 finalized while still in-construction mate-session[20087]: GLib-GObject-CRITICAL: Custom constructor for class GSIdleMonitor returned NULL (which is invalid). Please use GInitable instead.

** (mate-settings-daemon:20336): WARNING **: Failed to acquire org.mate.SettingsDaemon

** (mate-settings-daemon:20336): WARNING **: Could not acquire name Cannot register the panel shell: there is already one running. vmware-user: could not open /proc/fs/vmblock/dev

** (mate-screensaver:20367): WARNING **: screensaver already running in this session SELinux Troubleshooter: Applet requires SELinux be enabled to run. *** ERROR *** TI:07:55:25 TH:0x55ca34e51a60 FI:gpm-manager.c FN:gpm_manager_systemd_inhibit,1784

• Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied Traceback: mate-power-manager(+0x1902f) [0x55ca34b7002f] mate-power-manager(+0x1187e) [0x55ca34b6887e] /lib64/libgobject-2.0.so.0(g_type_create_instance+0x20b) [0x7fb6e807c7fb] /lib64/libgobject-2.0.so.0(+0x1469b) [0x7fb6e805e69b] /lib64/libgobject-2.0.so.0(g_object_newv+0x1dd) [0x7fb6e80600ad] /lib64/libgobject-2.0.so.0(g_object_new+0x104) [0x7fb6e8060864] mate-power-manager(+0x12102) [0x55ca34b69102] mate-power-manager(+0x7c52) [0x55ca34b5ec52] /lib64/libc.so.6(__libc_start_main+0xf1) [0x7fb6e746a401] mate-power-manager(+0x7fca) [0x55ca34b5efca]

** (mate-volume-control-applet:20416): WARNING **: Applet is already running, exiting

** (zeitgeist-datahub:20387): WARNING **: zeitgeist-datahub.vala:226: Unable to get name "org.gnome.zeitgeist.datahub" on the bus! Connection failure: Connection terminated Can't open RFKILL control device: No such file or directory Traceback (most recent call last): File "/usr/lib/blueberry/blueberry-obex-agent.py", line 720, in <module> service.load() File "/usr/lib/blueberry/blueberry-obex-agent.py", line 332, in load self._manager = Manager() File "/usr/lib/blueberry/blueberry-obex-agent.py", line 577, in __init__ if self.__class__.get_interface_version()[0] < 5: File "/usr/lib/blueberry/blueberry-obex-agent.py", line 446, in get_interface_version obj = dbus.SessionBus().get_object('org.bluez.obex', '/') File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 241, in get_object follow_name_owner_changes=follow_name_owner_changes) File "/usr/lib64/python2.7/site-packages/dbus/proxies.py", line 248, in __init__ self._named_service = conn.activate_name_owner(bus_name) File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 180, in activate_name_owner self.start_service_by_name(bus_name) File "/usr/lib64/python2.7/site-packages/dbus/bus.py", line 278, in start_service_by_name 'su', (bus_name, flags))) File "/usr/lib64/python2.7/site-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.systemd1.NoSuchUnit: Unit dbus-org.bluez.obex.service not found. Exception AttributeError: "'Manager' object has no attribute '_Base__signals'" in <bound method Manager.__del__ of <__main__.Manager object at 0x7f2ce57fc0a0 (uninitialized at 0x(nil))>> ignored ERROR:dbus.proxies:Introspect error on org.bluez.obex:/: dbus.exceptions.DBusException: org.freedesktop.systemd1.NoSuchUnit: Unit dbus-org.bluez.obex.service not found. abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.979 was not provided by any .service files abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying abrt-applet: Can't show notification: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying mate-session[20087]: WARNING: Child process 29443 was already dead. mate-session[20087]: WARNING: Child process 30408 was already dead. mate-session[20087]: WARNING: Child process 32062 was already dead. mate-session[20087]: WARNING: Child process 909 was already dead. mate-session[20087]: WARNING: Child process 2927 was already dead. mate-session[20087]: WARNING: Child process 3261 was already dead. mate-session[20087]: WARNING: Child process 7274 was already dead. mate-session[20087]: GLib-WARNING: GError set over the top of a previous GError or uninitialized memory. This indicates a bug in someone's code. You must ensure an error is NULL before it's set. The overwriting error message was: Unable to start application: Failed to execute child process "caja" (Remote I/O error) mate-session[20087]: WARNING: Error on restarting session managed app: (null) mate-session[20087]: ******************* START

mate-session[20087]: Frame 0: mate-session(+0x1a033) [0x56509d71c033] mate-session[20087]: Frame 1: mate-session(+0x1a222) [0x56509d71c222] mate-session[20087]: Frame 2: /lib64/libc.so.6(+0x35990) [0x7f6babcec990] mate-session[20087]: Frame 3: /lib64/libglib-2.0.so.0(g_io_channel_unref+0x9) [0x7f6bac0b9ae9] mate-session[20087]: Frame 4: /lib64/libglib-2.0.so.0(+0x46fde) [0x7f6bac0c3fde] mate-session[20087]: Frame 5: /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x2a0) [0x7f6bac0c6f90] mate-session[20087]: Frame 6: /lib64/libglib-2.0.so.0(+0x4a1d0) [0x7f6bac0c71d0] mate-session[20087]: Frame 7: /lib64/libglib-2.0.so.0(g_main_loop_run+0xc2) [0x7f6bac0c74f2] mate-session[20087]: Frame 8: /lib64/libgtk-3.so.0(gtk_main+0x85) [0x7f6bae0e80d5] mate-session[20087]: Frame 9: mate-session(+0xa91a) [0x56509d70c91a] mate-session[20087]: Frame 10: /lib64/libc.so.6(__libc_start_main+0xf1) [0x7f6babcd7401] mate-session[20087]: Frame 11: mate-session(+0xb12a) [0x56509d70d12a] mate-session[20087]: ******************* END

Gdk-Message: marco: Fatal IO error 104 (Connection reset by peer) on X server :71.0.

from X.org log

Mar 31 13:55:50 ourserver systemd-logind: New session 2270 of user localguy. Mar 31 13:55:53 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-loca lguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:55:54 ourserver /usr/bin/x2gostartagent: successfully started X2Go agent session with ID localguy-60-1490982952_stDMATE_dp32 Mar 31 13:55:55 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-localguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:55:56 ourserver /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="mate-session" Mar 31 13:55:58 ourserver /usr/sbin/x2gocleansessions[16410]: localguy-60-1490982952_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-localguy/C-localguy-60-1490982952_stDMATE_dp32/state (this can be ignored during session startups) Mar 31 13:56:02 ourserver gnome-keyring-daemon[9324]: couldn't access control socket: /run/user/1000/keyring/control: No such file or directory Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: keycode1 not existent Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: keycode2 not existent Mar 31 13:56:02 ourserver mate-session[9088]: WARNING: GSIdleMonitor: IDLETIME counter not found Mar 31 13:56:02 ourserver mate-session[9088]: GLib-GObject-CRITICAL: object GSIdleMonitor 0x562290e3b120 finalized while still in-construction Mar 31 13:56:02 ourserver mate-session[9088]: GLib-GObject-CRITICAL: Custom constructor for class GSIdleMonitor returned NULL (which is invalid). Please use GInitable instead. Mar 31 13:56:04 ourserver kernel: marco[9335]: segfault at 0 ip 00007f30d12866a7 sp 00007fff599aa478 error 4 in libX11-xcb.so.1.0.0[7f30d1286000+1000] Mar 31 13:56:04 ourserver systemd: Started Process Core Dump (PID 9362/UID 0). Mar 31 13:56:04 ourserver systemd-coredump: Process 9335 (marco) of user 1000 dumped core.#012#012Stack trace of thread 9335:#012#0 0x00007f30d12866a7 XGetXCBConnection (libX11-xcb.so.1)#012#1 0x00007f30d826a1b2 sn_display_new (libstartup-notification-1.so.0)#012#2 0x0000558494823d9f meta_display_open (marco)#012#3 0x000055849481450a main (marco)#012#4 0x00007f30d5ee5401 __libc_start_main (libc.so.6)#012#5 0x000055849481491a _start (marco)#012#012Stack trace of thread 9347:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d736527c g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f30c6a10fad dconf_gdbus_worker_thread (libdconfsettings.so)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6)#012#012Stack trace of thread 9348:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d736527c g_main_context_iteration (libglib-2.0.so.0)#012#3 0x00007f30d73652c1 glib_worker_main (libglib-2.0.so.0)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6)#012#012Stack trace of thread 9349:#012#0 0x00007f30d5fc101d poll (libc.so.6)#012#1 0x00007f30d7365166 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#2 0x00007f30d73654f2 g_main_loop_run (libglib-2.0.so.0)#012#3 0x00007f30d878ca76 gdbus_shared_thread_func (libgio-2.0.so.0)#012#4 0x00007f30d738cb93 g_thread_proxy (libglib-2.0.so.0)#012#5 0x00007f30d54836ca start_thread (libpthread.so.0)#012#6 0x00007f30d5fccf7f __clone (libc.so.6) Mar 31 13:56:05 ourserver kernel: marco[9369]: segfault at 0 ip 00007f430d2676a7 sp 00007ffcfd0139e8 error 4 in libX11-xcb.so.1.0.0[7f430d267000+1000] Mar 31 13:56:05 ourserver systemd: Started Process Core Dump (PID 9375/UID 0). Mar 31 13:56:05 ourserver systemd-coredump: Process 9369 (marco) of user 1000 dumped core.#012#012Stack trace of thread 9369:#012#0 0x00007f430d2676a7 XGetXCBConnection (libX11-xcb.so.1)#012#1 0x00007f431424b1b2 sn_display_new (libstartup-notification-1.so.0)#012#2 0x000055e9d68b3d9f meta_display_open (marco)#012#3 0x000055e9d68a450a main (marco)#012#4 0x00007f4311ec6401 __libc_start_main (libc.so.6)#012#5 0x000055e9d68a491a _start (marco)#012#012Stack trace of thread 9374:#012#0 0x00007f4311fa201d poll (libc.so.6)#012#1 0x00007f431471e055 g_socket_condition_timed_wait (libgio-2.0.so.0)#012#2 0x00007f431471ef7a g_socket_receive_with_timeout (libgio-2.0.so.0)#012#3 0x00007f43147049ac g_input_stream_read (libgio-2.0.so.0)#012#4 0x00007f43146dc0e2 g_buffered_input_stream_real_fill (libgio-2.0.so.0)#012#5 0x00007f43146dcde4 g_buffered_input_stream_fill (libgio-2.0.so.0)#012#6 0x00007f43146e406e g_data_input_stream_read_line (libgio-2.0.so.0)#012#7 0x00007f4314752575 _my_g_data_input_stream_read_line (libgio-2.0.so.0)#012#8 0x00007f4314752acc _g_dbus_auth_run_client (libgio-2.0.so.0)#012#9 0x00007f43147621b6 initable_init (libgio-2.0.so.0)#012#10 0x00007f43147628e1 g_bus_get_sync (libgio-2.0.so.0)#012#11 0x00007f43029f1d98 dconf_gdbus_get_bus_in_worker (libdconfsettings.so)#012#12 0x00007f43029f1e7a dconf_gdbus_method_call (libdconfsettings.so)#012#13 0x00007f43133428e7 g_idle_dispatch (libglib-2.0.so.0)#012#14 0x00007f4313345e52 g_main_context_dispatch (libglib-2.0.so.0)#012#15 0x00007f43133461d0 g_main_context_iterate.isra.24 (libglib-2.0.so.0)#012#16 0x00007f431334627c g_main_context_iteration (libglib-2.0.so.0)#012#17 0x00007f43029f1fad dconf_gdbus_worker_thread (libdconfsettings.so)#012#18 0x00007f431336db93 g_thread_proxy (libglib-2.0.so.0)#012#19 0x00007f43114646ca start_thread (libpthread.so.0)#012#20 0x00007f4311fadf7f __clone (libc.so.6) Mar 31 13:56:07 ourserver dbus-daemon[12493]: [session uid=1000 pid=12493] Activating service name='org.mate.panel.applet.WnckletFactory' requested by ':1.110' (uid=1000 pid=9361 comm="mate-panel ") Mar 31 13:56:07 ourserver journal: unable to create file '/run/user/1201/dconf/user': Permission denied. dconf will not work properly.