Package: kdenlive
Version: 16.12.1-1
Severity: important

Hello,

Kdenlive crashes on startup:

```
OpenGL vendor:  "NVIDIA Corporation"
OpenGL renderer:  "Quadro M1000M/PCIe/SSE2"
OpenGL Threaded:  true
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
OpenGL vendor:  "NVIDIA Corporation"
OpenGL renderer:  "Quadro M1000M/PCIe/SSE2"
OpenGL Threaded:  true
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
QOpenGLFunctions created with non-current context
Segmentation fault (core dumped)
```

syslog has
```
[95683.085432] FrameRenderer[9753]: segfault at a8 ip 000055d95179c919 sp 
00007f3f30c51650 error 4 in kdenlive[55d951452000+5f5000]
```

Backtrace attached.


Best regards,

George

-- System Information:
Debian Release: 9.0
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kdenlive depends on:
ii  ffmpeg                       7:3.2.2-2
ii  kded5                        5.28.0-1
ii  kdenlive-data                16.12.1-1
ii  kinit                        5.28.0-1
ii  kio                          5.28.0-1
ii  libc6                        2.24-9
ii  libgcc1                      1:6.3.0-4
ii  libgl1-mesa-glx [libgl1]     13.0.3-1
ii  libglu1-mesa [libglu1]       9.0.0-2.1
ii  libkf5archive5               5.28.0-1
ii  libkf5attica5                5.28.0-1
ii  libkf5auth5                  5.28.0-1
ii  libkf5bookmarks5             5.28.0-1
ii  libkf5codecs5                5.28.0-1
ii  libkf5completion5            5.28.0-1
ii  libkf5configcore5            5.28.0-1
ii  libkf5configgui5             5.28.0-1
ii  libkf5configwidgets5         5.28.0-1
ii  libkf5coreaddons5            5.28.0-1
ii  libkf5crash5                 5.28.0-1
ii  libkf5dbusaddons5            5.28.0-1
ii  libkf5filemetadata3          5.28.0-1
ii  libkf5guiaddons5             5.28.0-1
ii  libkf5i18n5                  5.28.0-1
ii  libkf5iconthemes5            5.28.0-1
ii  libkf5itemviews5             5.28.0-1
ii  libkf5jobwidgets5            5.28.0-1
ii  libkf5kiocore5               5.28.0-1
ii  libkf5kiofilewidgets5        5.28.0-1
ii  libkf5kiowidgets5            5.28.0-1
ii  libkf5newstuff5              5.28.0-1
ii  libkf5notifications5         5.28.0-1
ii  libkf5notifyconfig5          5.28.0-1
ii  libkf5service-bin            5.28.0-1
ii  libkf5service5               5.28.0-1
ii  libkf5solid5                 5.28.0-2
ii  libkf5sonnetui5              5.28.0-1
ii  libkf5textwidgets5           5.28.0-1
ii  libkf5widgetsaddons5         5.28.0-1
ii  libkf5xmlgui5                5.28.0-1
ii  libmlt++3                    6.4.1-1
ii  libmlt6                      6.4.1-1
ii  libqt5concurrent5            5.7.1+dfsg-3
ii  libqt5core5a                 5.7.1+dfsg-3
ii  libqt5dbus5                  5.7.1+dfsg-3
ii  libqt5gui5                   5.7.1+dfsg-3
ii  libqt5network5               5.7.1+dfsg-3
ii  libqt5qml5                   5.7.1-2
ii  libqt5quick5                 5.7.1-2
ii  libqt5script5                5.7.1~20161021+dfsg-2
ii  libqt5svg5                   5.7.1~20161021-2
ii  libqt5widgets5               5.7.1+dfsg-3
ii  libqt5xml5                   5.7.1+dfsg-3
ii  libstdc++6                   6.3.0-4
ii  libv4l-0                     1.12.2-1
ii  melt                         6.4.1-1
ii  oxygen-icon-theme            5:5.28.0-1
ii  qml-module-qtquick-controls  5.7.1~20161021-2
ii  qml-module-qtquick2          5.7.1-2

Versions of packages kdenlive recommends:
ii  dvdauthor        0.7.0-2
ii  dvgrab           3.5+git20160707.1.e46042e-1
ii  frei0r-plugins   1.5.0-1
ii  genisoimage      9:1.1.11-3
ii  recordmydesktop  0.3.8.1+svn602-1+b1
ii  swh-plugins      0.4.17-1

Versions of packages kdenlive suggests:
pn  khelpcenter  <none>

-- debconf-show failed
#0  0x000055d95179c919 in  ()
#1  0x000055d95179e9db in  ()
#2  0x000055d9518f2dbc in  ()
#3  0x00007f3f7511f459 in QObject::event(QEvent*) (this=0x7f3f18173090, 
e=<optimized out>) at kernel/qobject.cpp:1263
        mce = <optimized out>
        sw = {receiver = 0x7f3f18173090, previousSender = 0x0, currentSender = 
{sender = 0x0, signal = -1, ref = 1}, switched = true}
#4  0x00007f3f768beb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x7f3f18173090, e=0x7f3f200157e0) at 
kernel/qapplication.cpp:3799
        consumed = <optimized out>
        this = <optimized out>
        e = 0x7f3f200157e0
        receiver = 0x7f3f18173090
#5  0x00007f3f768c6341 in QApplication::notify(QObject*, QEvent*) 
(this=0x7fffb6e152f0, receiver=0x7f3f18173090, e=0x7f3f200157e0) at 
kernel/qapplication.cpp:3556
        w = 0x7f3f18173090
        extra = <optimized out>
        isProxyWidget = <optimized out>
        res = false
#6  0x00007f3f750f29a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
(receiver=0x7f3f18173090, event=event@entry=0x7f3f200157e0) at 
kernel/qcoreapplication.cpp:988
        selfRequired = true
        result = false
        cbdata = {0x7f3f18173090, 0x7f3f200157e0, 0x7f3f30c519cf}
        d = <optimized out>
        threadData = 0x7f3f181731e0
        scopeLevelCounter = {threadData = 0x7f3f181731e0}
#7  0x00007f3f750f512d in QCoreApplication::sendEvent(QObject*, QEvent*) 
(event=0x7f3f200157e0, receiver=<optimized out>) at 
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
        e = 0x7f3f200157e0
        pe = <optimized out>
        r = <optimized out>
        unlocker = {m = <synthetic pointer><error reading variable>}
        event_deleter = {d = 0x7f3f200157e0}
        locker = {val = 139908963840528}
        startOffset = 0
        i = @0x7f3f18173204: 1
        cleanup = {receiver = 0x0, event_type = 0, data = 0x7f3f181731e0, 
exceptionCaught = true}
#8  0x00007f3f750f512d in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, 
data=0x7f3f181731e0)
    at kernel/qcoreapplication.cpp:1649
        e = 0x7f3f200157e0
        pe = <optimized out>
        r = <optimized out>
        unlocker = {m = <synthetic pointer><error reading variable>}
        event_deleter = {d = 0x7f3f200157e0}
        locker = {val = 139908963840528}
        startOffset = 0
        i = @0x7f3f18173204: 1
        cleanup = {receiver = 0x0, event_type = 0, data = 0x7f3f181731e0, 
exceptionCaught = true}
#9  0x00007f3f750f5598 in QCoreApplication::sendPostedEvents(QObject*, int) 
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at 
kernel/qcoreapplication.cpp:1503
        data = <optimized out>
#10 0x00007f3f75146c03 in postEventSourceDispatch(GSource*, GSourceFunc, 
gpointer) (s=0x7f3f1c0012d0) at kernel/qeventdispatcher_glib.cpp:276
        source = 0x7f3f1c0012d0
#11 0x00007f3f703077f7 in g_main_dispatch (context=0x7f3f1c000990) at 
././glib/gmain.c:3203
        dispatch = 0x7f3f75146bf0 <postEventSourceDispatch(GSource*, 
GSourceFunc, gpointer)>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        source = 0x7f3f1c0012d0
        current = 0x7f3f18002360
        i = 0
#12 0x00007f3f703077f7 in g_main_context_dispatch 
(context=context@entry=0x7f3f1c000990) at ././glib/gmain.c:3856
#13 0x00007f3f70307a60 in g_main_context_iterate 
(context=context@entry=0x7f3f1c000990, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = 1
        allocated_nfds = 1
        fds = <optimized out>
#14 0x00007f3f70307b0c in g_main_context_iteration (context=0x7f3f1c000990, 
may_block=may_block@entry=1) at ././glib/gmain.c:3990
        retval = <optimized out>
#15 0x00007f3f7514700f in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7f3f1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x7f3f1c0008e0
        canWait = true
        savedFlags = {i = 0}
        result = <optimized out>
#16 0x00007f3f750f098a in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7f3f30c51cc0, flags=..., flags@entry=...) at 
kernel/qeventloop.cpp:212
        d = 0x7f3f1c003190
        locker = {val = 139908963840416}
        ref = {d = 0x7f3f1c003190, locker = @0x7f3f30c51c40, exceptionCaught = 
true}
#17 0x00007f3f74f1e0f3 in QThread::exec() (this=<optimized out>) at 
thread/qthread.cpp:507
        d = 0x7f3f18173130
        locker = {val = 139908963840416}
        eventLoop = 
              {<QObject> = {_vptr.QObject = 0x7f3f7533c3b8 <vtable for 
QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 
0x7f3f75262280 <qt_meta_stringdata_QObject>, data = 0x7f3f75262160 
<qt_meta_data_QObject>, static_metacall = 0x7f3f75126440 
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7f3f1c003190}, 
static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7f3f752aa060 
<qt_meta_stringdata_Qt>, data = 0x7f3f752a75a0 <qt_meta_data_Qt>, 
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static 
staticMetaObject = {d = {superdata = 0x7f3f75333880 
<QObject::staticMetaObject>, stringdata = 0x7f3f752c1400 
<qt_meta_stringdata_QEventLoop>, data = 0x7f3f752c13a0 
<qt_meta_data_QEventLoop>, static_metacall = 0x7f3f75197e80 
<QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, 
relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#18 0x00007f3f74f22da8 in QThreadPrivate::start(void*) (arg=0x7f3f18173090) at 
thread/qthread_unix.cpp:368
        __clframe = {__cancel_routine = 0x7f3f74f21e40 
<QThreadPrivate::finish(void*)>, __cancel_arg = 0x7f3f18173090, __do_it = 1, 
__cancel_type = <optimized out>}
        thr = 0x7f3f18173090
        data = 0x7f3f181731e0
#19 0x00007f3f730cc424 in start_thread (arg=0x7f3f30c52700) at 
pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f3f30c52700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139909377894144, 
-2934145417675820980, 0, 139909388445279, 0, 139910644031552, 
2970603083334660172, 2970462948835569740}, mask_was_saved = 0}}, priv = {pad = 
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#20 0x00007f3f743219bf in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

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