your pulseaudio log did not show the sink port after you unplugged headphone
do pulseaudio change to line out , SPDIF or HDMI ? ( 38.730| 7.351) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged ( 38.730| 0.000) D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status no ( 45.179| 6.448) I: [pulseaudio] main.c: Got signal SIGINT. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1521987 Title: Sound is not automatically switched back from headphones to speakers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1521987/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs