it is lucky while I write the above report I hang the eject error message windows open.. After I sent the report I found another error message that has a log option. Here I attach the brasero-session.log file
** Attachment added: "brasero-session.log" http://launchpadlibrarian.net/49505983/brasero-session.log -- Brasero burning ISO dvd-rw fail please eject manually https://bugs.launchpad.net/bugs/578910 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs