Description of problem: Switch to nvidia-drivers from http://negativo17.org/repos/fedora-nvidia.repo because plasmashell crashes with nouveau drivers. With nvidia-drivers, sddm crashes. Version-Release number of selected component: sddm-0.13.0-6.fc23 Additional info: reporter: libreport-2.6.4 backtrace_rating: 4 cmdline: /usr/bin/sddm-greeter --socket /tmp/sddm-:0-XQXXuL --theme /usr/share/sddm/themes/maldives crash_function: qt_message_fatal executable: /usr/bin/sddm-greeter global_pid: 1144 kernel: 4.4.8-300.fc23.x86_64 runlevel: N 5 type: CCpp uid: 992 Truncated backtrace: Thread no. 1 (10 frames) #2 qt_message_fatal at global/qlogging.cpp:1610 #3 QMessageLogger::fatal at global/qlogging.cpp:784 #4 QSGRenderLoop::handleContextCreationFailure at /usr/src/debug/qtdeclarative-opensource-src-5.6.0/src/quick/scenegraph/qsgrenderloop.cpp:262 #5 QSGGuiThreadRenderLoop::renderWindow at /usr/src/debug/qtdeclarative-opensource-src-5.6.0/src/quick/scenegraph/qsgrenderloop.cpp:351 #6 QSGGuiThreadRenderLoop::exposureChanged at /usr/src/debug/qtdeclarative-opensource-src-5.6.0/src/quick/scenegraph/qsgrenderloop.cpp:441 #7 QWindow::event at kernel/qwindow.cpp:2096 #8 QQuickWindow::event at /usr/src/debug/qtdeclarative-opensource-src-5.6.0/src/quick/items/qquickwindow.cpp:1473 #9 doNotify at kernel/qcoreapplication.cpp:1090 #10 QCoreApplication::notify at kernel/qcoreapplication.cpp:1076 #11 QCoreApplication::notifyInternal2 at kernel/qcoreapplication.cpp:1015 Potential duplicate: bug 1284795
Created attachment 1156088 [details] File: backtrace
Created attachment 1156089 [details] File: cgroup
Created attachment 1156090 [details] File: core_backtrace
Created attachment 1156091 [details] File: dso_list
Created attachment 1156092 [details] File: environ
Created attachment 1156093 [details] File: limits
Created attachment 1156094 [details] File: maps
Created attachment 1156095 [details] File: mountinfo
Created attachment 1156096 [details] File: namespaces
Created attachment 1156097 [details] File: open_fds
Created attachment 1156098 [details] File: proc_pid_status
Created attachment 1156099 [details] File: var_log_messages
#3 QMessageLogger::fatal (this=this@entry=0x7ffdb48e0ce0, msg=msg@entry=0x7f7ef8ee5579 "%s") at global/qlogging.cpp:784 message = <optimized out> ap = <error reading variable ap (Attempt to dereference a generic pointer.)> #4 0x00007f7ef8d519f3 in QSGRenderLoop::handleContextCreationFailure (this=this@entry=0x55dc95d29170, window=0x55dc95d07e30, isEs=isEs@entry=false) at /usr/src/debug/qtdeclarative-opensource-src-5.6.0/src/quick/scenegraph/qsgrenderloop.cpp:262 translatedMessage = {static null = {<No data fields>}, d = 0x55dc95f23060} untranslatedMessage = {static null = {<No data fields>}, d = 0x55dc95f23290} signalEmitted = <optimized out> It appears opengl isn't working with your newly installed nvidia driver, and unfortunately, not much we can do about that.