372228 – libkscreen-qt5: qt_message_fatal(): kscreen_backend_launcher

Bug 372228 - libkscreen-qt5: qt_message_fatal(): kscreen_backend_launcher

Summary: libkscreen-qt5: qt_message_fatal(): kscreen_backend_launcher

Status:	RESOLVED DOWNSTREAM

Alias:	None

Product:	KScreen
Classification:	Plasma
Component:	libkscreen (show other bugs)
Version:	5.8.2
Platform:	Other Linux

Importance:	NOR crash
Target Milestone:	---
Assignee:	Sebastian Kügler

URL:
Keywords:

Depends on:
Blocks:

Reported:	2016-11-08 19:10 UTC by RJ
Modified:	2016-11-10 18:39 UTC (History)
CC List:	2 users (show)

See Also:	https://bugzilla.redhat.com/show_bug.cgi?id=1393062
Latest Commit:
Version Fixed In:
Sentry Crash Report:

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Description RJ 2016-11-08 19:10:15 UTC

warning: core file may not match specified executable file.
[New LWP 7403]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/libexec/kf5/kscreen_backend_launcher'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
58	}

Thread 1 (Thread 0x7f360f618d40 (LWP 7403)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
        set = {__val = {0, 139870153232265, 166, 140720936176880, 104, 8, 139869897520864, 1, 0, 139870150836220, 8, 139870150829125, 47, 140720936176848, 140720936176944, 4543238025}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f360dd9c52a in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x55afe2dac4a0, sa_sigaction = 0x55afe2dac4a0}, sa_mask = {__val = {17028194897886074112, 140720936177536, 140720936177168, 3, 94213913533104, 139870153292768, 139870150733945, 139870045181080, 17028194897886074112, 140720936177536, 140720936177168, 3, 140720936177536, 94213913533104, 139870150734280, 94213913533104}}, sa_flags = 1453217024, sa_restorer = 0x55afe2daad80}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f360ea64af1 in qt_message_fatal (context=..., message=<synthetic pointer>...) at global/qlogging.cpp:1680
No locals.
#3  QMessageLogger::fatal (this=this@entry=0x7ffc2569cf80, msg=msg@entry=0x7f35ff8ea9e8 "QXcbConnection: Could not connect to display %s") at global/qlogging.cpp:793
        message = <optimized out>
        ap = <error reading variable ap (Attempt to dereference a generic pointer.)>
#4  0x00007f35ff85bb5e in QXcbConnection::QXcbConnection (this=0x55afe2daad80, nativeInterface=0x55afe2d95ab0, canGrabServer=<optimized out>, defaultVisualId=<optimized out>, displayName=<optimized out>) at qxcbconnection.cpp:592
        dpy = <optimized out>
        extensions = {0x70, 0x7f360e125ae0 <main_arena>, 0x18, 0x55afe2d95e58, 0x7ffc2569d6b8, 0x7f360e125ae0 <main_arena>, 0x370, 0x0}
        glIntegrationNames = {<QList<QString>> = {<QListSpecialMethods<QString>> = {<No data fields>}, {p = {static shared_null = {ref = {atomic = {_q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, _M_i = -1}, <No data fields>}}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x38}, d = 0x38}}, <No data fields>}
        glIntegrationName = {static null = {<No data fields>}, d = 0x7ffc2569cfa0}
#5  0x00007f35ff85ed1e in QXcbIntegration::QXcbIntegration (this=<optimized out>, parameters=..., argc=@0x7ffc2569d54c: 1, argv=0x7ffc2569d6b8) at qxcbintegration.cpp:186
        displayName = <optimized out>
        noGrabArg = <optimized out>
        doGrabArg = <optimized out>
        canNotGrabEnv = false
        canNotGrabEnv = false
        canNotGrabEnv = false
#6  0x00007f360f7716ed in QXcbIntegrationPlugin::create (this=<optimized out>, system=..., parameters=..., argc=@0x7ffc2569d54c: 1, argv=0x7ffc2569d6b8) at qxcbmain.cpp:56
No locals.
#7  0x00007f360ef438fd in QPlatformIntegrationFactory::create (platform=..., paramList=..., argc=@0x7ffc2569d54c: 1, argv=<optimized out>, argv@entry=0x7ffc2569d6b8, platformPluginPath=...) at kernel/qplatformintegrationfactory.cpp:71
No locals.
#8  0x00007f360ef510c1 in init_platform (argv=<optimized out>, argc=@0x7ffc2569d54c: 1, platformThemeName=..., platformPluginPath=..., pluginArgument=...) at kernel/qguiapplication.cpp:1094
        arguments = {<QList<QString>> = {<QListSpecialMethods<QString>> = {<No data fields>}, {p = {static shared_null = <optimized out>, d = 0x55afe2d79f50}, d = 0x55afe2d79f50}}, <No data fields>}
        name = {static null = {<No data fields>}, d = 0x55afe2d90aa0}
        themeNames = {<QList<QString>> = {<QListSpecialMethods<QString>> = {<No data fields>}, {p = {static shared_null = <optimized out>, d = 0x55afe2d92600}, d = 0x55afe2d92600}}, <No data fields>}
#9  QGuiApplicationPrivate::createPlatformIntegration (this=0x55afe2d910e0) at kernel/qguiapplication.cpp:1263
        platformPluginPath = {static null = {<No data fields>}, d = 0x7f360ecd2b60 <QArrayData::shared_null>}
        platformName = {d = 0x55afe2d927c0}
        platformNameEnv = {d = 0x7f360ecd2b60 <QArrayData::shared_null>}
        platformThemeName = {static null = {<No data fields>}, d = 0x7f360ecd2b60 <QArrayData::shared_null>}
        icon = {static null = {<No data fields>}, d = 0x7f360ecd2b60 <QArrayData::shared_null>}
        j = <optimized out>
#10 0x00007f360ef51f3d in QGuiApplicationPrivate::createEventDispatcher (this=<optimized out>) at kernel/qguiapplication.cpp:1280
No locals.
#11 0x00007f360ec1f4f9 in QCoreApplicationPrivate::init (this=this@entry=0x55afe2d910e0) at kernel/qcoreapplication.cpp:787
No locals.
#12 0x00007f360ef5319e in QGuiApplicationPrivate::init (this=0x55afe2d910e0) at kernel/qguiapplication.cpp:1303
        loadTestability = <optimized out>
        pluginList = {<QListSpecialMethods<QByteArray>> = {<No data fields>}, {p = {static shared_null = <optimized out>, d = 0x12}, d = 0x12}}
        session_id = {static null = {<No data fields>}, d = 0x68}
        s = {static null = {<No data fields>}, d = 0xa}
        j = <optimized out>
        envPlugins = {d = 0x0}
#13 0x00007f360ef53fa4 in QGuiApplication::QGuiApplication (this=0x7ffc2569d570, argc=@0x7ffc2569d54c: 1, argv=0x7ffc2569d6b8, flags=329472) at kernel/qguiapplication.cpp:579
No locals.
#14 0x000055afe16e84c1 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/libkscreen-5.8.1/src/backendlauncher/main.cpp:31
        app = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7f360f2f1570 <vtable for QGuiApplication+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7f360ed77c80 <qt_meta_stringdata_QObject>, data = 0x7f360ed77b60 <qt_meta_data_QObject>, static_metacall = 0x7f360ec47ed0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55afe2d910e0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7f360edbfa20 <qt_meta_stringdata_Qt>, data = 0x7f360edbcf60 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7f360ee4bec0 <QObject::staticMetaObject>, stringdata = 0x7f360edd6f80 <qt_meta_stringdata_QCoreApplication>, data = 0x7f360edd6e60 <qt_meta_data_QCoreApplication>, static_metacall = 0x7f360ecaf890 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self = 0x7ffc2569d570}, static staticMetaObject = {d = {superdata = 0x7f360ee54b40 <QCoreApplication::staticMetaObject>, stringdata = 0x7f360f240e60 <qt_meta_stringdata_QGuiApplication>, data = 0x7f360f240c20 <qt_meta_data_QGuiApplication>, static_metacall = 0x7f360ef59b10 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        loader = <optimized out>
        ret = <optimized out>
From                To                  Syms Read   Shared Object Library
0x00007f360f317540  0x00007f360f344eaf  Yes         /lib64/libKF5Screen.so.7
0x00007f360f7465e0  0x00007f360f7476f8  Yes         /lib64/libQt5X11Extras.so.5
0x00007f360f6cdcf0  0x00007f360f72ad91  Yes         /lib64/libQt5DBus.so.5
0x00007f360ef2b690  0x00007f360f22acb5  Yes         /lib64/libQt5Gui.so.5
0x00007f360ea514a0  0x00007f360ecb1bc3  Yes         /lib64/libQt5Core.so.5
0x00007f360e6d6870  0x00007f360e785d99  Yes         /lib64/libstdc++.so.6
0x00007f360e347720  0x00007f360e3b8c0a  Yes         /lib64/libm.so.6
0x00007f360e12daa0  0x00007f360e13d8f5  Yes         /lib64/libgcc_s.so.1
0x00007f360dd849d0  0x00007f360ded4a83  Yes         /lib64/libc.so.6
0x00007f360db4ca20  0x00007f360db59d21  Yes         /lib64/libpthread.so.0
0x00007f360d8ec460  0x00007f360d92cbb2  Yes         /lib64/libGL.so.1
0x00007f360d691740  0x00007f360d6bcad1  Yes         /lib64/libdbus-1.so.3
0x00007f360d456020  0x00007f360d47734f  Yes         /lib64/libpng16.so.16
0x00007f360d1f4220  0x00007f360d233309  Yes         /lib64/libharfbuzz.so.0
0x00007f360cfd9060  0x00007f360cfe5547  Yes         /lib64/libz.so.1
0x00007f360cc1f070  0x00007f360cd5558b  Yes         /lib64/libicui18n.so.57
0x00007f360c8137b0  0x00007f360c8d70ab  Yes         /lib64/libicuuc.so.57
0x00007f360ad3a530  0x00007f360ad3a630  Yes (*)     /lib64/libicudata.so.57
0x00007f360aad2570  0x00007f360ab1a26e  Yes         /lib64/libpcre16.so.0
0x00007f360a8cdda0  0x00007f360a8ce9ae  Yes         /lib64/libdl.so.2
0x00007f360a6cb660  0x00007f360a6cb7da  Yes         /lib64/libgthread-2.0.so.0
0x00007f360a3d2710  0x00007f360a44a519  Yes         /lib64/libglib-2.0.so.0
0x00007f360a1b20e0  0x00007f360a1b51ff  Yes         /lib64/librt.so.1
0x00007f360f634320  0x00007f360f68e3bf  Yes         /lib64/libsystemd.so.0
0x00007f360f552ad0  0x00007f360f5702c0  Yes         /lib64/ld-linux-x86-64.so.2
0x00007f3609f89cf0  0x00007f3609fa23b9  Yes         /lib64/libexpat.so.1
0x00007f3609d83cf0  0x00007f3609d844a3  Yes         /lib64/libxcb-dri3.so.0
0x00007f3609b80d80  0x00007f3609b81606  Yes         /lib64/libxcb-present.so.0
0x00007f360997b210  0x00007f360997d262  Yes         /lib64/libxcb-sync.so.1
0x00007f3609776910  0x00007f3609776bfc  Yes         /lib64/libxshmfence.so.1
0x00007f3609551900  0x00007f360955c8db  Yes         /lib64/libglapi.so.0
0x00007f3609326320  0x00007f360933c3cf  Yes         /lib64/libselinux.so.1
0x00007f3609111570  0x00007f360911b5cf  Yes         /lib64/libXext.so.6
0x00007f3608f0bba0  0x00007f3608f0c4f3  Yes         /lib64/libXdamage.so.1
0x00007f3608d064e0  0x00007f3608d08816  Yes         /lib64/libXfixes.so.3
0x00007f3608b035a0  0x00007f3608b036bb  Yes         /lib64/libX11-xcb.so.1
0x00007f36087e0960  0x00007f3608867fb4  Yes         /lib64/libX11.so.6
0x00007f36085a7700  0x00007f36085b9415  Yes         /lib64/libxcb.so.1
0x00007f360838bf10  0x00007f3608393fb5  Yes         /lib64/libxcb-glx.so.0
0x00007f360817d8b0  0x00007f360817e9d5  Yes         /lib64/libxcb-dri2.so.0
0x00007f3607f76f40  0x00007f3607f798c0  Yes         /lib64/libXxf86vm.so.1
0x00007f3607d6a710  0x00007f3607d71c10  Yes         /lib64/libdrm.so.2
0x00007f3607ac7060  0x00007f3607b38a75  Yes         /lib64/libfreetype.so.6
0x00007f36078926d0  0x00007f36078b3308  Yes         /lib64/libgraphite2.so.3
0x00007f360761e5c0  0x00007f3607670731  Yes         /lib64/libpcre.so.1
0x00007f3607405990  0x00007f3607415080  Yes         /lib64/libresolv.so.2
0x00007f36071fe520  0x00007f36071ffe86  Yes         /lib64/libcap.so.2
0x00007f3606fd9da0  0x00007f3606ff0912  Yes         /lib64/liblzma.so.5
0x00007f3606dc71d0  0x00007f3606dd3793  Yes         /lib64/liblz4.so.1
0x00007f3606ae7600  0x00007f3606b8be48  Yes         /lib64/libgcrypt.so.20
0x00007f36068cd820  0x00007f36068d6de9  Yes         /lib64/libgpg-error.so.0
0x00007f36066c7da0  0x00007f36066c8ae9  Yes         /lib64/libXau.so.6
0x00007f36064b85f0  0x00007f36064c4432  Yes         /lib64/libbz2.so.1
0x00007f360f771590  0x00007f360f77190a  Yes         /usr/lib64/qt5/plugins/platforms/libqxcb.so
0x00007f35ff851650  0x00007f35ff8e76b0  Yes         /lib64/libQt5XcbQpa.so.5
0x00007f35ff60e0d0  0x00007f35ff6188d7  Yes         /lib64/libXi.so.6
0x00007f35ff402fe0  0x00007f35ff407908  Yes         /lib64/libxcb-render.so.0
0x00007f35ff1fb4d0  0x00007f35ff1fc366  Yes         /lib64/libxcb-render-util.so.0
0x00007f35feff3ad0  0x00007f35feff7c92  Yes         /lib64/libSM.so.6
0x00007f35feddab10  0x00007f35fede859e  Yes         /lib64/libICE.so.6
0x00007f35febd20d0  0x00007f35febd38aa  Yes         /lib64/libxcb-image.so.0
0x00007f35fe9cdfa0  0x00007f35fe9ceed9  Yes         /lib64/libxcb-icccm.so.4
0x00007f35fe7c6bf0  0x00007f35fe7c9125  Yes         /lib64/libxcb-xfixes.so.0
0x00007f35fe5c0d90  0x00007f35fe5c18a3  Yes         /lib64/libxcb-shm.so.0
0x00007f35fe3b67d0  0x00007f35fe3bae79  Yes         /lib64/libxcb-randr.so.0
0x00007f35fe1ad090  0x00007f35fe1adc95  Yes         /lib64/libxcb-shape.so.0
0x00007f35fdfa9b00  0x00007f35fdfaa37c  Yes         /lib64/libxcb-keysyms.so.1
0x00007f35fdda6df0  0x00007f35fdda7505  Yes         /lib64/libxcb-xinerama.so.0
0x00007f35fdb93c20  0x00007f35fdb9f9c5  Yes         /lib64/libxcb-xkb.so.1
0x00007f35fd9845c0  0x00007f35fd98707d  Yes         /lib64/libxkbcommon-x11.so.0
0x00007f35fd744a90  0x00007f35fd7646ca  Yes         /lib64/libfontconfig.so.1
0x00007f35fd535a00  0x00007f35fd53ba55  Yes         /lib64/libXrender.so.1
0x00007f35fd30be50  0x00007f35fd3254ea  Yes         /lib64/libinput.so.10
0x00007f35fd0c8200  0x00007f35fd0e2e25  Yes         /lib64/libxkbcommon.so.0
0x00007f360f753ad0  0x00007f360f765aef  Yes         /lib64/libudev.so.1
0x00007f35fce99330  0x00007f35fceb2fb9  Yes         /lib64/libEGL.so.1
0x00007f35fcc8e450  0x00007f35fcc8fb01  Yes         /lib64/libuuid.so.1
0x00007f35fca89490  0x00007f35fca8a23c  Yes         /lib64/libxcb-util.so.1
0x00007f35fc881ee0  0x00007f35fc884440  Yes         /lib64/libmtdev.so.1
0x00007f35fc671070  0x00007f35fc676665  Yes         /lib64/libevdev.so.2
0x00007f35fc45fe50  0x00007f35fc463d16  Yes         /lib64/libwacom.so.2
0x00007f35fc251780  0x00007f35fc257045  Yes         /lib64/libgbm.so.1
0x00007f35fc0453c0  0x00007f35fc049c5f  Yes         /lib64/libwayland-client.so.0
0x00007f35fbe336e0  0x00007f35fbe394ef  Yes         /lib64/libwayland-server.so.0
0x00007f35fbc26610  0x00007f35fbc296f2  Yes         /lib64/libgudev-1.0.so.0
0x00007f35fb9db340  0x00007f35fba0bdad  Yes         /lib64/libgobject-2.0.so.0
0x00007f35fb7ca6f0  0x00007f35fb7ceeb4  Yes         /lib64/libffi.so.6
0x00007f35fb46b650  0x00007f35fb54627e  Yes         /lib64/libgio-2.0.so.0
0x00007f35fb233050  0x00007f35fb233f55  Yes         /lib64/libgmodule-2.0.so.0
0x00007f35faff2c00  0x00007f35fb01fe09  Yes         /lib64/libmount.so.1
0x00007f35fadad660  0x00007f35fadd4da9  Yes         /lib64/libblkid.so.1
(*): Shared library is missing debugging information.
$1 = 0x0
$2 = 0x0
rax            0x0	0
rbx            0x55afe2daad80	94213913619840
rcx            0x7f360dd9a92f	139870137329967
rdx            0x0	0
rsi            0x7ffc2569cbd0	140720936176592
rdi            0x2	2
rbp            0x0	0x0
rsp            0x7ffc2569cc48	0x7ffc2569cc48
r8             0x0	0
r9             0x7ffc2569cbd0	140720936176592
r10            0x8	8
r11            0x246	582
r12            0x55afe2dab0d0	94213913620688
r13            0x55afe2d95ab0	94213913533104
r14            0x7f360ecd3be0	139870153292768
r15            0x1	1
rip            0x7f360dd9a92f	0x7f360dd9a92f <__GI_raise+159>
eflags         0x246	[ PF ZF IF ]
cs             0x33	51
ss             0x2b	43
ds             0x0	0
es             0x0	0
fs             0x0	0
gs             0x0	0
st0            0	(raw 0x00000000000000000000)
st1            0	(raw 0x00000000000000000000)
st2            0	(raw 0x00000000000000000000)
st3            0	(raw 0x00000000000000000000)
st4            0	(raw 0x00000000000000000000)
st5            0	(raw 0x00000000000000000000)
st6            0	(raw 0x00000000000000000000)
st7            0	(raw 0x00000000000000000000)
fctrl          0x37f	895
fstat          0x0	0
ftag           0xffff	65535
fiseg          0x0	0
fioff          0x0	0
foseg          0x0	0
fooff          0x0	0
fop            0x0	0
mxcsr          0x1f80	[ IM DM ZM OM UM PM ]
ymm0           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x8000000000000000, 0x8000000000000000, 0x0, 0x0}, v32_int8 = {0xff <repeats 16 times>, 0x0 <repeats 16 times>}, v16_int16 = {0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x0}, v2_int128 = {0xffffffffffffffffffffffffffffffff, 0x00000000000000000000000000000000}}
ymm1           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x0 <repeats 22 times>}, v16_int16 = {0x0, 0x0, 0x0, 0x0, 0xff00, 0x0 <repeats 11 times>}, v8_int32 = {0x0, 0x0, 0xff00, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0xff00, 0x0, 0x0}, v2_int128 = {0x000000000000ff000000000000000000, 0x00000000000000000000000000000000}}
ymm2           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm3           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm4           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm5           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x0 <repeats 17 times>}, v16_int16 = {0xff00, 0xff00, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0xff00ff00, 0x0, 0x0, 0xff0000, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0xff00ff00, 0xff000000000000, 0x0, 0x0}, v2_int128 = {0x00ff00000000000000000000ff00ff00, 0x00000000000000000000000000000000}}
ymm6           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm7           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm8           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x95, 0xda, 0xe2, 0xaf, 0x55, 0x0, 0x0, 0x20, 0x96, 0xda, 0xe2, 0xaf, 0x55, 0x0 <repeats 18 times>}, v16_int16 = {0x9500, 0xe2da, 0x55af, 0x0, 0x9620, 0xe2da, 0x55af, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0xe2da9500, 0x55af, 0xe2da9620, 0x55af, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x55afe2da9500, 0x55afe2da9620, 0x0, 0x0}, v2_int128 = {0x000055afe2da9620000055afe2da9500, 0x00000000000000000000000000000000}}
ymm9           {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm10          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm11          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm12          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm13          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm14          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
ymm15          {v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
Dump of assembler code for function __GI_raise:
   0x00007f360dd9a890 <+0>:	sub    $0x90,%rsp
   0x00007f360dd9a897 <+7>:	mov    %edi,%r8d
   0x00007f360dd9a89a <+10>:	mov    $0x8,%r10d
   0x00007f360dd9a8a0 <+16>:	movdqa 0x15bab8(%rip),%xmm0        # 0x7f360def6360
   0x00007f360dd9a8a8 <+24>:	lea    -0x78(%rsp),%r9
   0x00007f360dd9a8ad <+29>:	lea    0x8(%rsp),%rsi
   0x00007f360dd9a8b2 <+34>:	xor    %edi,%edi
   0x00007f360dd9a8b4 <+36>:	mov    $0xe,%eax
   0x00007f360dd9a8b9 <+41>:	movaps %xmm0,0x8(%rsp)
   0x00007f360dd9a8be <+46>:	pcmpeqd %xmm0,%xmm0
   0x00007f360dd9a8c2 <+50>:	mov    %r9,%rdx
   0x00007f360dd9a8c5 <+53>:	movaps %xmm0,0x18(%rsp)
   0x00007f360dd9a8ca <+58>:	movaps %xmm0,0x28(%rsp)
   0x00007f360dd9a8cf <+63>:	movaps %xmm0,0x38(%rsp)
   0x00007f360dd9a8d4 <+68>:	movaps %xmm0,0x48(%rsp)
   0x00007f360dd9a8d9 <+73>:	movaps %xmm0,0x58(%rsp)
   0x00007f360dd9a8de <+78>:	movaps %xmm0,0x68(%rsp)
   0x00007f360dd9a8e3 <+83>:	movaps %xmm0,0x78(%rsp)
   0x00007f360dd9a8e8 <+88>:	syscall 
   0x00007f360dd9a8ea <+90>:	mov    $0x27,%ecx
   0x00007f360dd9a8ef <+95>:	mov    %ecx,%eax
   0x00007f360dd9a8f1 <+97>:	syscall 
   0x00007f360dd9a8f3 <+99>:	mov    %rax,%rdi
   0x00007f360dd9a8f6 <+102>:	mov    $0xba,%eax
   0x00007f360dd9a8fb <+107>:	syscall 
   0x00007f360dd9a8fd <+109>:	movslq %eax,%rsi
   0x00007f360dd9a900 <+112>:	movslq %r8d,%rdx
   0x00007f360dd9a903 <+115>:	movslq %edi,%rdi
   0x00007f360dd9a906 <+118>:	mov    $0xea,%eax
   0x00007f360dd9a90b <+123>:	syscall 
   0x00007f360dd9a90d <+125>:	cmp    $0xfffffffffffff000,%rax
   0x00007f360dd9a913 <+131>:	ja     0x7f360dd9a940 <__GI_raise+176>
   0x00007f360dd9a915 <+133>:	mov    %eax,%r8d
   0x00007f360dd9a918 <+136>:	mov    $0x8,%r10d
   0x00007f360dd9a91e <+142>:	xor    %edx,%edx
   0x00007f360dd9a920 <+144>:	mov    %r9,%rsi
   0x00007f360dd9a923 <+147>:	mov    $0x2,%edi
   0x00007f360dd9a928 <+152>:	mov    $0xe,%eax
   0x00007f360dd9a92d <+157>:	syscall 
=> 0x00007f360dd9a92f <+159>:	mov    %r8d,%eax
   0x00007f360dd9a932 <+162>:	add    $0x90,%rsp
   0x00007f360dd9a939 <+169>:	retq   
   0x00007f360dd9a93a <+170>:	nopw   0x0(%rax,%rax,1)
   0x00007f360dd9a940 <+176>:	mov    0x38a521(%rip),%rdx        # 0x7f360e124e68
   0x00007f360dd9a947 <+183>:	neg    %eax
   0x00007f360dd9a949 <+185>:	mov    $0xffffffff,%r8d
   0x00007f360dd9a94f <+191>:	mov    %eax,%fs:(%rdx)
   0x00007f360dd9a952 <+194>:	jmp    0x7f360dd9a918 <__GI_raise+136>
End of assembler dump.

Comment 1 Christoph Feck 2016-11-08 21:13:50 UTC

Somehow your system has both Wayland and X11 activated. Applications detect the X11 mode, but fail to open the display. This seems to be a common theme of your recent bug reports.

Are you using a released version of a distribution so that developers can try to reproduce the issues?

Comment 2 RJ 2016-11-09 17:35:11 UTC

I'm using Fedora 25 to make it better. These bugs appears when I logout from LXqt and login to KDE Plasma.

Comment 3 Rex Dieter 2016-11-09 17:41:55 UTC

#3  ... "QXcbConnection: Could not connect to display ..."

is the failure here (I think), hard to say *why* that is happening though.

Comment 4 Sebastian Kügler 2016-11-10 10:15:15 UTC

This is nothing we can do about, it needs to be corrected downstream.

Comment 5 Rex Dieter 2016-11-10 18:39:33 UTC

Is your hostname changing during or shortly after you login?  Could be due to sddm issue:
https://github.com/sddm/sddm/issues/733
where xauth credentials get invalidated.