Comment 6 for bug 1644237

dmesg shows these:
[ 58.054017] audit: type=1400 audit(1479927387.876:54): apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=3034 comm="gnome-keyring-d" requested_mask="r" denied_mask="r" fsuid=998 ouid=0
[ 58.076612] audit: type=1400 audit(1479927387.900:55): apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=3048 comm="gnome-keyring-d" requested_mask="r" denied_mask="r" fsuid=998 ouid=0
[ 58.148996] audit: type=1400 audit(1479927387.972:56): apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/3081/fd/" pid=3081 comm="gpg-agent" requested_mask="r" denied_mask="r" fsuid=998 ouid=0
[ 58.465172] audit: type=1400 audit(1479927388.288:57): apparmor="DENIED" operation="connect" profile="/usr/lib/lightdm/lightdm-guest-session" name="/run/snapd.socket" pid=3195 comm="content-hub-pee" requested_mask="w" denied_mask="w" fsuid=998 ouid=0
[ 58.467504] audit: type=1400 audit(1479927388.288:58): apparmor="DENIED" operation="connect" profile="/usr/lib/lightdm/lightdm-guest-session" name="/run/snapd.socket" pid=3195 comm="content-hub-pee" requested_mask="w" denied_mask="w" fsuid=998 ouid=0
[ 58.552978] audit: type=1400 audit(1479927388.376:59): apparmor="DENIED" operation="bind" profile="/usr/lib/lightdm/lightdm-guest-session" pid=3184 comm="ibus-daemon" family="unix" sock_type="stream" protocol=0 requested_mask="bind" denied_mask="bind" addr="@/tmp/ibus/dbus-JNJFS8e2"