Public bug reported: Using Ubuntu 17.10 on desktop computer using Intel HD4000 Graphics, connected to a Dell monitor using DisplayPort. When the monitor is powered off, the whole desktop crashes as soon as it is powered on again.
/var/log/syslog reports: Nov 28 21:36:02 cube kernel: [12009.262611] show_signal_msg: 73 callbacks suppressed Nov 28 21:36:02 cube kernel: [12009.262612] gnome-shell[1949]: segfault at 18 ip 00007fc9aef082d4 sp 00007ffcf90f2328 error 4 in libmutter-1.so.0.0.0[7fc9aee69000+142000] Nov 28 21:36:02 cube nautilus[2475]: Error reading events from display: Broken pipe Nov 28 21:36:02 cube update-notifier[2588]: Error reading events from display: Broken pipe Nov 28 21:36:02 cube dropbox[2267]: Error reading events from display: Broken pipe Nov 28 21:36:02 cube org.gnome.Shell.desktop[1949]: (EE) Nov 28 21:36:02 cube org.gnome.Shell.desktop[1949]: Fatal server error: Nov 28 21:36:02 cube org.gnome.Shell.desktop[1949]: (EE) failed to read Wayland events: Broken pipe Nov 28 21:36:02 cube org.gnome.Shell.desktop[1949]: (EE) Nov 28 21:36:02 cube gnome-session[1899]: gnome-session-binary[1899]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Nov 28 21:36:02 cube gnome-session-binary[1899]: Unrecoverable failure in required component org.gnome.Shell.desktop Nov 28 21:36:02 cube gnome-session-binary[1899]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 Nov 28 21:36:02 cube gsd-rfkill[2080]: g_object_notify: object class 'CcRfkillGlib' has no property named 'kernel-noinput' Nov 28 21:36:02 cube gsd-color[1449]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Dell_Inc__DELL_U3011_PH5NY114142L_coderazzi_1000 Nov 28 21:36:02 cube kernel: [12009.448053] rfkill: input handler enabled Nov 28 21:36:02 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StScrollBar' tried to allocate a size of -13.00 x 14.00 Nov 28 21:36:02 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StBoxLayout' tried to allocate a size of -13.00 x 1.00 Nov 28 21:36:02 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StScrollBar' tried to allocate a size of -13.00 x 14.00 Nov 28 21:36:02 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StBoxLayout' tried to allocate a size of -13.00 x 1.00 Nov 28 21:36:03 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StScrollBar' tried to allocate a size of -13.00 x 14.00 Nov 28 21:36:03 cube gnome-shell[1204]: clutter-actor.c:10049: Actor 'StBoxLayout' tried to allocate a size of -13.00 x 1.00 Nov 28 21:36:04 cube gnome-shell[1204]: 0x20000e (gnome-shel): frame_complete callback never occurred for frame 108 Nov 28 21:36:06 cube org.a11y.atspi.Registry[1983]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" Nov 28 21:36:06 cube org.a11y.atspi.Registry[1983]: after 2285 requests (2285 known processed) with 0 events remaining. It will then show the login page again. The system is full updated to latest version ** Affects: kubuntu-meta (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kubuntu-meta in Ubuntu. https://bugs.launchpad.net/bugs/1734998 Title: Desktop killed when powering off a monitor using Display Port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kubuntu-meta/+bug/1734998/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs