Looks like the logs that apport-bug uploaded didn't include the syslog. Please find the relevant statements below:
``` david@polar:~$ grep gnome-control-c /var/log/syslog ... Jul 3 20:38:11 polar gnome-control-c[11235]: Settings schema 'org.gnome.desktop.remote-desktop.vnc' does not contain a key named 'enable' Jul 3 20:38:11 polar kernel: [ 699.349484] traps: gnome-control-c[11235] trap int3 ip:7f7a5281eccf sp:7ffdf1107bf0 error:0 in libglib-2.0.so.0.7200.1[7f7a527df000+8f000] ... Jul 3 21:41:10 polar gnome-control-c[20800]: Settings schema 'org.gnome.desktop.remote-desktop.vnc' does not contain a key named 'enable' Jul 3 21:41:10 polar kernel: [ 4477.717988] traps: gnome-control-c[20800] trap int3 ip:7f2dcd744ccf sp:7fffe09c1de0 error:0 in libglib-2.0.so.0.7200.1[7f2dcd705000+8f000]
```
Looks like the logs that apport-bug uploaded didn't include the syslog. Please find the relevant statements below:
``` c[11235] : Settings schema 'org.gnome. desktop. remote- desktop. vnc' does not contain a key named 'enable' c[11235] trap int3 ip:7f7a5281eccf sp:7ffdf1107bf0 error:0 in libglib- 2.0.so. 0.7200. 1[7f7a527df000+ 8f000] c[20800] : Settings schema 'org.gnome. desktop. remote- desktop. vnc' does not contain a key named 'enable' c[20800] trap int3 ip:7f2dcd744ccf sp:7fffe09c1de0 error:0 in libglib- 2.0.so. 0.7200. 1[7f2dcd705000+ 8f000]
david@polar:~$ grep gnome-control-c /var/log/syslog
...
Jul 3 20:38:11 polar gnome-control-
Jul 3 20:38:11 polar kernel: [ 699.349484] traps: gnome-control-
...
Jul 3 21:41:10 polar gnome-control-
Jul 3 21:41:10 polar kernel: [ 4477.717988] traps: gnome-control-
```