Copying my comment from bug 1187453 when running on mako This may be a timing thing depending on how fast you type, it does not seem very consistent. It definitely does not occur when long deliberate presses are used.
Turned debug on in ofonod then tail -f /var/log/syslog | grep DTMF You will often see the number of the phone app UI but not in the log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1225060 Title: DTMF tones and feedback missing when in a call To manage notifications about this bug go to: https://bugs.launchpad.net/dialer-app/+bug/1225060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs