Public bug reported: At least in this one case.
Josh Arenson and I were debugging a problem with a greeter / lightdm / unity-system-compositor. It turned out to be because lightdm was passing unity-system-compositor "--from-dm-fd=0" which resulted in an asio exception when it tried to use fd 0. But the exception looked like: """ ERROR: Throw location unknown (consider using BOOST_THROW_EXCEPTION) Dynamic exception type: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::system::system_error> > std::exception::what: assign: Operation not permitted """ It took us a surprising amount of effort to track down where this was actually failing (which was the usc::AsioDMConnection::AsioDMConnection constructor in src/asio_dm_connection.cpp). I don't have a suggested fix, just a request to make similar failure- hunts easier. Or at the least, this specific error case more obvious. ** Affects: unity-system-compositor (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1590447 Title: Error reporting could be better To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-system-compositor/+bug/1590447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs