It appears the terminal is trying to create another surface while you are selecting. This is the output just before the crash:
qtmir.mir: MirWindowManagerImpl::add_surface(): size requested ( 0 , -26 ) and placed ( 1366 , 768 ) qtmir.mir: SessionListener::surface_created - this= SessionListener(0x7fbda015bec0) session= 0x7fbd84007710 surface= 0x7fbd8400d350 qtmir.applications: ApplicationManager::onSessionCreatedSurface - sessionName= terminal qtmir.surfaces: MirSurfaceManager::onSessionCreatedSurface - mirSession= 0x7fbd84007710 surface= 0x7fbd8400d350 surface.name= Window 1 qtmir.sessions: Session::setSurface - session= "terminal" surface= qtmir::MirSurface(0x1698080) This crash is a known issue. ** Also affects: qtmir Importance: Undecided Status: New ** Changed in: qtmir Status: New => Triaged ** Changed in: qtmir Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1488588 Title: Terminal crashes on selecting text, takes Unity with it Status in Canonical System Image: Confirmed Status in QtMir: Triaged Status in Ubuntu Terminal App: New Status in unity8 package in Ubuntu: Triaged Bug description: To reproduce: 1. Open terminal 2. Hold finger over screen until pop-up menu appears, select "Select" (or whatever it is in English, not copy or paste) 3. Drag finger to select text 4. Once again drag finger to select text 5. Terminal disappears. After a bit, Unity restarts. I'm attaching the log that was generated /var/crash at the moment the crash occured. The terminal seems to continue working: the icon is still there with the little triangle next to it and it can be switched to/from using the app switcher, but it simply shows the app that's underneath it. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1488588/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp