sco connection fails on ubuntu 17.04 with external bluetooth dongle where as a2dp works well.Tried with several dongles-broadcom,mediatek. With inbuilt dongle everything works fine. Any help please. while getting call i am getting below log - Jun 15 13:23:56 sat rtkit-daemon[1239]: Supervising 3 threads of 1 processes of 1 users. Jun 15 13:23:56 sat rtkit-daemon[1239]: Successfully made thread 26213 of process 1697 (n/a) owned by '1000' RT at priority 5. Jun 15 13:23:56 sat rtkit-daemon[1239]: Supervising 4 threads of 1 processes of 1 users. Jun 15 13:23:56 sat dbus[778]: [system] Rejected send message, 3 matched rules; type="method_return", sender=":1.99" (uid=1000 pid=1697 comm="/usr/bin/pulseaudio --start --log-target=syslog ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.125" (uid=0 pid=2294 comm="/usr/sbin/ofonod -P ril --nodetach ") Thanks Rilwan