Well the beep is back, for now. I noticed it working today and possibly was due to yesterday's updates (I'll attached a file called "updates_term_log.txt"). This could be one of those one time only scenarios, so I'll wait until after a few system restarts and report back.
Here is the output for yesterday's updates from /var/log/apt/history.log : Start-Date: 2016-07-19 05:59:00 Commandline: aptdaemon role='role-commit-packages' sender=':1.113' Upgrade: libunity-settings-daemon1:amd64 (15.04.1+16.04.20160209-0ubuntu2, 15.04.1+16.04.20160701-0ubuntu1), libnm-glib4:amd64 (1.2.0-0ubuntu0.16.04.2, 1.2.0-0ubuntu0.16.04.3), gstreamer1.0-plugins-ugly-amr:amd64 (1.8.1-1ubuntu0.1, 1.8.2-1ubuntu0.1), unity-schemas:amd64 (7.4.0+16.04.20160526.1-0ubuntu1, 7.4.0+16.04.20160715-0ubuntu1), update-notifier-common:amd64 (3.168, 3.168.1), binutils:amd64 (2.26.1-1ubuntu1~16.04, 2.26.1-1ubuntu1~16.04.1), unity-lens-applications:amd64 (7.1.0+16.04.20160217.2-0ubuntu1, 7.1.0+16.04.20160701-0ubuntu1), libnm-glib-vpn1:amd64 (1.2.0-0ubuntu0.16.04.2, 1.2.0-0ubuntu0.16.04.3), libnm0:amd64 (1.2.0-0ubuntu0.16.04.2, 1.2.0-0ubuntu0.16.04.3), unity:amd64 (7.4.0+16.04.20160526.1-0ubuntu1, 7.4.0+16.04.20160715-0ubuntu1), network-manager:amd64 (1.2.0-0ubuntu0.16.04.2, 1.2.0-0ubuntu0.16.04.3), thunderbird-gnome-support:amd64 (1:38.8.0+build1-0ubuntu0.16.04.1, 1:45.2.0+build1-0ubuntu0.16.04.1), libnm-util2:amd64 (1.2.0-0ubuntu0.16.04.2, 1.2.0-0ubuntu0.16.04.3) , metacity-common:amd64 (1:3.18.4-0ubuntu0.3, 1:3.18.5-0ubuntu0.1), thunderbird-locale-en-us:amd64 (1:38.8.0+build1-0ubuntu0.16.04.1, 1:45.2.0+build1-0ubuntu0.16.04.1), unity-services:amd64 (7.4.0+16.04.20160526.1-0ubuntu1, 7.4.0+16.04.20160715-0ubuntu1), libunity-core-6.0-9:amd64 (7.4.0+16.04.20160526.1-0ubuntu1, 7.4.0+16.04.20160715-0ubuntu1), libmetacity-private3a:amd64 (1:3.18.4-0ubuntu0.3, 1:3.18.5-0ubuntu0.1), thunderbird:amd64 (1:38.8.0+build1-0ubuntu0.16.04.1, 1:45.2.0+build1-0ubuntu0.16.04.1), unity-settings-daemon:amd64 (15.04.1+16.04.20160209-0ubuntu2, 15.04.1+16.04.20160701-0ubuntu1), thunderbird-locale-en:amd64 (1:38.8.0+build1-0ubuntu0.16.04.1, 1:45.2.0+build1-0ubuntu0.16.04.1), update-notifier:amd64 (3.168, 3.168.1), base-files:amd64 (9.4ubuntu4.1, 9.4ubuntu4.2), gstreamer1.0-plugins-ugly:amd64 (1.8.1-1ubuntu0.1, 1.8.2-1ubuntu0.1) End-Date: 2016-07-19 06:00:22 ** Attachment added: "updates_term_log.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1599599/+attachment/4704306/+files/updates_term_log.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1599599 Title: System beep broken (again) in Xenial Xerus To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1599599/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
