Just to follow on from TenLeftFingers, I was having this problem on every call. Specifically deleting ~/.config/com.ubuntu.dialer-app solved this problem for me (from https://bugs.launchpad.net/dialer- app/+bug/1548914)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1377996 Title: dialer is freezing on active call screen To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1377996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs