This seems related to https://code.launchpad.net/~mir- team/mir/fix-1339700/+merge/226233 , so it may be a different manifestation of bug 1339700.
>From Alberto's last comment in the MP above: "Ok, after staring at TimeoutFrameDroppingPolicy there are scenarios that can lead to an assert." (referring to the assertion we are seeing in this bug) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1335481 Title: unity-system-compositor crashed with SIGABRT - assertion failed at buffer_queue.cpp:136 - "!pending_client_notifications.empty()" To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1335481/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs