Bug 375055

Summary: Kdenlive crash after startup
Product: [Applications] kdenlive Reporter: mr.radtke
Component: User Interface & MiscellaneousAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED FIXED    
Severity: crash CC: bugs.kde.org, jsalatas, lctrgk, luca86, s_chriscollins, wegwerf-1-2-3
Priority: NOR Keywords: drkonqi
Version: 16.12.1   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: crash report
It was generated by the reporting tool.

Description mr.radtke 2017-01-14 18:51:44 UTC 
Application: kdenlive (16.12.1)
 (Compiled from sources)
Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.36-8-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed: Crash at startup, no other application is open. Opensuse 42.2 with all patches installed

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb0e7208900 (LWP 3668))]

Thread 12 (Thread 0x7fb09563c700 (LWP 3684)):
#0  0x00007fb0d614fc13 in pa_fdsem_before_poll () from /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#1  0x00007fb0d6167857 in ?? () from /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#2  0x00007fb0d9d53a14 in pa_mainloop_dispatch () from /usr/lib64/libpulse.so.0
#3  0x00007fb0d9d53dea in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#4  0x00007fb0b8cd2a7b in ?? () from /usr/lib64/libSDL-1.2.so.0
#5  0x00007fb0b8ca63b0 in ?? () from /usr/lib64/libSDL-1.2.so.0
#6  0x00007fb0b8cae648 in ?? () from /usr/lib64/libSDL-1.2.so.0
#7  0x00007fb0b8cede39 in ?? () from /usr/lib64/libSDL-1.2.so.0
#8  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fb095e3d700 (LWP 3683)):
#0  0x00007fb0ddb760af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0d9914629 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fb0d9915d1f in ?? () from /usr/lib64/libxcb.so.1
#3  0x00007fb0d9915e92 in xcb_wait_for_reply64 () from /usr/lib64/libxcb.so.1
#4  0x00007fb0ddfce110 in _XReply () from /usr/lib64/libX11.so.6
#5  0x00007fb0dae259c8 in ?? () from /usr/X11R6/lib64/libGL.so.1
#6  0x00007fb0dae262a5 in ?? () from /usr/X11R6/lib64/libGL.so.1
#7  0x00007fb0ceed8a51 in ?? () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#8  0x00007fb0e0590edf in QOpenGLContext::makeCurrent(QSurface*) () from /usr/lib64/libQt5Gui.so.5
#9  0x00007fb0e54eeb9b in ?? () from /usr/lib64/libQt5Quick.so.5
#10 0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x5a1b2e0) at thread/qthread_unix.cpp:341
#11 0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#12 0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fb096689700 (LWP 3682)):
#0  0x00007fb0ddb760af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0e6244783 in ?? () from /usr/lib64/libmlt.so.6
#2  0x000000000071260d in RenderThread::run (this=0x7fb08c000c30) at /usr/src/debug/kdenlive-16.12.1/src/monitor/glwidget.cpp:1272
#3  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x7fb08c000c30) at thread/qthread_unix.cpp:341
#4  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#5  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fb096e8a700 (LWP 3681)):
[KCrash Handler]
#6  QOpenGLFunctions::glGenTextures (textures=0x7fb0841597b8, n=3, this=0x7fb088203590) at /usr/include/qt5/QtGui/qopenglfunctions.h:783
#7  uploadTextures (context=<optimized out>, frame=..., texture=texture@entry=0x7fb0841597b8) at /usr/src/debug/kdenlive-16.12.1/src/monitor/glwidget.cpp:343
#8  0x0000000000714622 in FrameRenderer::showFrame (this=this@entry=0x7fb084159780, frame=<incomplete type>) at /usr/src/debug/kdenlive-16.12.1/src/monitor/glwidget.cpp:1323
#9  0x000000000085ab47 in FrameRenderer::qt_static_metacall (_o=0x7fb084159780, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kdenlive-16.12.1/build/src/moc_glwidget.cpp:777
#10 0x00007fb0e002d166 in QObject::event (this=0x7fb084159780, e=<optimized out>) at kernel/qobject.cpp:1256
#11 0x00007fb0e201ee3c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x7fb084159780, e=0x7fb08c013ae0) at kernel/qapplication.cpp:3804
#12 0x00007fb0e202349a in QApplication::notify (this=0x7ffc709d0ec0, receiver=0x7fb084159780, e=0x7fb08c013ae0) at kernel/qapplication.cpp:3561
#13 0x00007fb0e0001fc5 in QCoreApplication::notifyInternal2 (receiver=0x7fb084159780, event=event@entry=0x7fb08c013ae0) at kernel/qcoreapplication.cpp:1015
#14 0x00007fb0e0003daa in QCoreApplication::sendEvent (event=0x7fb08c013ae0, receiver=<optimized out>) at kernel/qcoreapplication.h:225
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x7fb084159820) at kernel/qcoreapplication.cpp:1650
#16 0x00007fb0e0004358 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#17 0x00007fb0e0052c83 in postEventSourceDispatch (s=0x7fb0880012d0) at kernel/qeventdispatcher_glib.cpp:270
#18 0x00007fb0dbef2134 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#19 0x00007fb0dbef2388 in ?? () from /usr/lib64/libglib-2.0.so.0
#20 0x00007fb0dbef242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#21 0x00007fb0e005232b in QEventDispatcherGlib::processEvents (this=0x7fb0880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#22 0x00007fb0dfffffdb in QEventLoop::exec (this=this@entry=0x7fb096e89cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#23 0x00007fb0dfe3af1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#24 0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x7fb084159780) at thread/qthread_unix.cpp:341
#25 0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#26 0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fb09788f700 (LWP 3680)):
#0  0x00007fb0ddb760af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0dfe4065b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4ac2e30) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x5077a40, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fb0e54ee4eb in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007fb0e54ee995 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x50779c0) at thread/qthread_unix.cpp:341
#6  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fb09c83c700 (LWP 3677)):
#0  0x00007fb0ddb760af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0b8f398f7 in ?? () from /usr/lib64/mlt-6/libmltsdl.so
#2  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#3  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fb09e5ef700 (LWP 3675)):
#0  0x00007fb0df44e49d in poll () from /lib64/libc.so.6
#1  0x00007fb0dbef2314 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fb0dbef242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fb0e005232b in QEventDispatcherGlib::processEvents (this=0x7fb0900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fb0dfffffdb in QEventLoop::exec (this=this@entry=0x7fb09e5eecb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fb0dfe3af1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fb0e11cf9b8 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x3b93860) at thread/qthread_unix.cpp:341
#8  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fb09f565700 (LWP 3674)):
#0  0x00007fb0ddb76458 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0dfe405a8 in QWaitConditionPrivate::wait_relative (time=30000, this=0x3feb150) at thread/qwaitcondition_unix.cpp:126
#2  QWaitConditionPrivate::wait (time=30000, this=0x3feb150) at thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x3feaf90, mutex=mutex@entry=0x3feaec0, time=30000) at thread/qwaitcondition_unix.cpp:208
#4  0x00007fb0dfe3c9a0 in QThreadPoolThread::run (this=0x3feaf80) at thread/qthreadpool.cpp:127
#5  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x3feaf80) at thread/qthread_unix.cpp:341
#6  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fb0a4a8b700 (LWP 3673)):
#0  0x00007fb0df44e49d in poll () from /lib64/libc.so.6
#1  0x00007fb0dbef2314 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fb0dbef242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fb0e005232b in QEventDispatcherGlib::processEvents (this=0x7fb0a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fb0dfffffdb in QEventLoop::exec (this=this@entry=0x7fb0a4a8acb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fb0dfe3af1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fb0e11cf9b8 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x3ff4440) at thread/qthread_unix.cpp:341
#8  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fb0cdf1b700 (LWP 3671)):
#0  0x00007fb0df44e49d in poll () from /lib64/libc.so.6
#1  0x00007fb0dbef2314 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fb0dbef242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fb0e005232b in QEventDispatcherGlib::processEvents (this=0x7fb0c00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fb0dfffffdb in QEventLoop::exec (this=this@entry=0x7fb0cdf1aca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fb0dfe3af1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fb0e1c501d5 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x7fb0e1eb8ce0) at thread/qthread_unix.cpp:341
#8  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fb0cfefa700 (LWP 3670)):
#0  0x00007fb0df44e49d in poll () from /lib64/libc.so.6
#1  0x00007fb0d99143e2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fb0d9915fcf in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fb0d2a86839 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fb0dfe3f9e9 in QThreadPrivate::start (arg=0x2c72180) at thread/qthread_unix.cpp:341
#5  0x00007fb0ddb71734 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fb0df456d3d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fb0e7208900 (LWP 3668)):
#0  0x00007fb0ddb760af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fb0dfe4065b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4f68490) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x5a1b320, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fb0e54efc2a in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007fb0e54f0a64 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007fb0e54f1603 in ?? () from /usr/lib64/libQt5Quick.so.5
#6  0x00007fb0e056069e in QWindow::event(QEvent*) () from /usr/lib64/libQt5Gui.so.5
#7  0x00007fb0e5523275 in QQuickWindow::event(QEvent*) () from /usr/lib64/libQt5Quick.so.5
#8  0x00007fb0e201ee3c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x3da7320, e=0x7ffc709d0ab0) at kernel/qapplication.cpp:3804
#9  0x00007fb0e202349a in QApplication::notify (this=0x7ffc709d0ec0, receiver=0x3da7320, e=0x7ffc709d0ab0) at kernel/qapplication.cpp:3561
#10 0x00007fb0e0001fc5 in QCoreApplication::notifyInternal2 (receiver=0x3da7320, event=0x7ffc709d0ab0) at kernel/qcoreapplication.cpp:1015
#11 0x00007fb0e05563b1 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib64/libQt5Gui.so.5
#12 0x00007fb0e0556e7d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#13 0x00007fb0e0538eeb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#14 0x00007fb0d2ab3bc0 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007fb0dbef2134 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#16 0x00007fb0dbef2388 in ?? () from /usr/lib64/libglib-2.0.so.0
#17 0x00007fb0dbef242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#18 0x00007fb0e005230c in QEventDispatcherGlib::processEvents (this=0x2caa580, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#19 0x00007fb0dfffffdb in QEventLoop::exec (this=this@entry=0x7ffc709d0d70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#20 0x00007fb0e0007ec6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#21 0x0000000000491901 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdenlive-16.12.1/src/main.cpp:164

Reported using DrKonqi
Comment 1 Techwolf 2017-01-16 03:51:31 UTC 
Created attachment 103437 [details]
crash report

I am getting the same thing. Attaching the crash report due to bugzilla times out for me when using the reporter.
Comment 2 Jean-Baptiste Mardelle 2017-01-16 07:31:21 UTC 
This is likely a duplicate of bug #374969
Can you confirm you have an Nvidia graphic card?
Comment 3 lctrgk 2017-01-20 01:33:06 UTC 
Created attachment 103549 [details]
It was generated by the reporting tool.

Hi, i have the same problem. The crash started happening when i changed my Nvidia GT 630 with an Nvidia GTX 1050. I can confirm this doesn't happen on my laptop with intel graphics. Also i uninstalled the nvidia proprietary driver and the system started using llvmpipe (software rendering), the problem doesn't happen with this driver, i was not able to test nouveau though. Then i installed the Nvidia driver again and the problem comes back, so i'm pretty sure the problem is related to the proprietary drivers.

The version of the driver is 375.26 and i'm using KDE Neon user edition, the driver comes from this ppa: https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa

I apologize in advance for my bad English and because i'm not completely sure if this is the correct way to report a bug.
Comment 4 Luca Giambonini 2017-01-22 23:02:44 UTC 
Same issue with Chakra Linux on 16.12.1 with mlt 6.2.0. Nvidia driver used: 370.28

OpenGL vendor:  "NVIDIA Corporation"
OpenGL renderer:  "GeForce GTX 760/PCIe/SSE2"
OpenGL Threaded:  true
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
Comment 5 John Salatas 2017-01-23 08:06:42 UTC 
Same here (KDE Neon stable as of January 23, 2017). 

I have removed every configuration file and the started it. In the terminal I get the following output
============================================================================
terminal output
============================================================================
# kdenlive
KDE Desktop detected, using system icons
MLT profiles path:  "/usr/share/mlt/profiles/"
---
formats:
  - a64
  - ac3
  - adts
  - adx
  - aiff
  - amr
  - apng
  - asf
  - ass
  - ast
  - asf_stream
  - au
  - avi
  - avm2
  - bit
  - caf
  - cavsvideo
  - crc
  - dash
  - data
  - daud
  - dirac
  - dnxhd
  - dts
  - dv
  - eac3
  - f4v
  - ffm
  - ffmetadata
  - filmstrip
  - flac
  - flv
  - framecrc
  - framemd5
  - g722
  - g723_1                                                                                                                                                                                                                                   
  - gif                                                                                                                                                                                                                                      
  - gxf                                                                                                                                                                                                                                      
  - h261                                                                                                                                                                                                                                     
  - h263                                                                                                                                                                                                                                     
  - h264                                                                                                                                                                                                                                     
  - hds                                                                                                                                                                                                                                      
  - hevc                                                                                                                                                                                                                                     
  - hls                                                                                                                                                                                                                                      
  - ico                                                                                                                                                                                                                                      
  - ilbc                                                                                                                                                                                                                                     
  - image2                                                                                                                                                                                                                                   
  - image2pipe                                                                                                                                                                                                                               
  - ipod                                                                                                                                                                                                                                     
  - ircam                                                                                                                                                                                                                                    
  - ismv                                                                                                                                                                                                                                     
  - ivf                                                                                                                                                                                                                                      
  - jacosub                                                                                                                                                                                                                                  
  - latm                                                                                                                                                                                                                                     
  - lrc
  - m4v
  - md5
  - matroska
  - matroska
  - microdvd
  - mjpeg
  - mlp
  - mmf
  - mov
  - mp2
  - mp3
  - mp4
  - mpeg
  - vcd
  - mpeg1video
  - dvd
  - svcd
  - mpeg2video
  - vob
  - mpegts
  - mpjpeg
  - mxf
  - mxf_d10
  - mxf_opatom
  - null
  - nut
  - oga
  - ogg
  - oma
  - opus
  - alaw
  - mulaw
  - f64be
  - f64le
  - f32be
  - f32le
  - s32be
  - s32le
  - s24be
  - s24le
  - s16be
  - s16le
  - s8
  - u32be
  - u32le
  - u24be
  - u24le
  - u16be
  - u16le
  - u8
  - psp
  - rawvideo
  - rm
  - roq
  - rso
  - rtp
  - rtp_mpegts
  - rtsp
  - sap
  - segment
  - stream_segment,ssegment
  - singlejpeg
  - smjpeg
  - smoothstreaming
  - sox
  - spx
  - spdif
  - srt
  - swf
  - tee
  - 3g2
  - 3gp
  - mkvtimestamp_v2
  - truehd
  - uncodedframecrc
  - vc1
  - vc1test
  - voc
  - w64
  - wav
  - webm
  - webm_dash_manifest
  - webm_chunk
  - webp
  - webvtt
  - wtv
  - wv
  - yuv4mpegpipe
  - alsa
  - caca
  - fbdev
  - opengl
  - oss
  - pulse
  - sdl
  - v4l2
  - xv
...
---
audio_codecs:
  - comfortnoise
  - s302m
  - aac
  - ac3
  - ac3_fixed
  - alac
  - dca
  - eac3
  - flac
  - g723_1
  - mp2
  - mp2fixed
  - nellymoser
  - real_144
  - sonic
  - sonicls
  - tta
  - vorbis
  - wavpack
  - wmav1
  - wmav2
  - pcm_alaw
  - pcm_f32be
  - pcm_f32le
  - pcm_f64be
  - pcm_f64le
  - pcm_mulaw
  - pcm_s8
  - pcm_s8_planar
  - pcm_s16be
  - pcm_s16be_planar
  - pcm_s16le
  - pcm_s16le_planar
  - pcm_s24be
  - pcm_s24daud
  - pcm_s24le
  - pcm_s24le_planar
  - pcm_s32be
  - pcm_s32le
  - pcm_s32le_planar
  - pcm_u8
  - pcm_u16be
  - pcm_u16le
  - pcm_u24be
  - pcm_u24le
  - pcm_u32be
  - pcm_u32le
  - roq_dpcm
  - adpcm_adx
  - g722
  - g726
  - adpcm_ima_qt
  - adpcm_ima_wav
  - adpcm_ms
  - adpcm_swf
  - adpcm_yamaha
  - libgsm
  - libgsm_ms
  - libmp3lame
  - libopencore_amrnb
  - libopus
  - libshine
  - libspeex
  - libtwolame
  - libvo_aacenc
  - libvo_amrwbenc
  - libvorbis
  - libwavpack
...
---
video_codecs:
  - a64multi
  - a64multi5
  - alias_pix
  - amv
  - apng
  - asv1
  - asv2
  - avrp
  - avui
  - ayuv
  - bmp
  - cinepak
  - cljr
  - dnxhd
  - dpx
  - dvvideo
  - ffv1
  - ffvhuff
  - flashsv
  - flashsv2
  - flv
  - gif
  - h261
  - h263
  - h263p
  - hap
  - huffyuv
  - jpeg2000
  - jpegls
  - ljpeg
  - mjpeg
  - mpeg1video
  - mpeg2video
  - mpeg4
  - msmpeg4v2
  - msmpeg4
  - msvideo1
  - pam
  - pbm
  - pcx
  - pgm
  - pgmyuv
  - png
  - ppm
  - prores
  - prores_aw
  - prores_ks
  - qtrle
  - r10k
  - r210
  - rawvideo
  - roqvideo
  - rv10
  - rv20
  - sgi
  - snow
  - sunrast
  - svq1
  - targa
  - tiff
  - utvideo
  - v210
  - v308
  - v408
  - v410
  - wmv1
  - wmv2
  - xbm
  - xface
  - xwd
  - y41p
  - yuv4
  - zlib
  - zmbv
  - libopenjpeg
  - libschroedinger
  - libtheora
  - libvpx
  - libvpx-vp9
  - libwebp
  - libx264
  - libx264rgb
  - libx265
  - libxvid
...
OpenGL vendor:  "NVIDIA Corporation"
OpenGL renderer:  "GeForce GTX 750 Ti/PCIe/SSE2"
OpenGL Threaded:  true
OpenGL ARG_SYNC:  true
OpenGL OpenGLES:  false
QOpenGLFunctions created with non-current context
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kdenlive path = /usr/bin pid = 11351
KCrash: Arguments: /usr/bin/kdenlive 
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0

[1]+  Stopped                 kdenlive

============================================================================



============================================================================
Backtrace
============================================================================
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f782654e8c0 (LWP 11687))]

Thread 13 (Thread 0x7f77c2ffd700 (LWP 11701)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f77fb86495d in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
#2  0x00007f781e4bf6ba in start_thread (arg=0x7f77c2ffd700) at pthread_create.c:333
#3  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f77c37fe700 (LWP 11700)):
#0  0x00007f781fe2cc21 in __GI_ppoll (fds=0x7f77c4009aa0, nfds=3, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007f7818b73ebd in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f7818b744ae in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f77fb5fefeb in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4  0x00007f77fb5d1920 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5  0x00007f77fb5db0b8 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#6  0x00007f77fb61af59 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#7  0x00007f781e4bf6ba in start_thread (arg=0x7f77c37fe700) at pthread_create.c:333
#8  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f77c3fff700 (LWP 11699)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7825763933 in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#2  0x000000000072d3ed in RenderThread::run (this=0x7f77c4000c40) at /workspace/build/src/monitor/glwidget.cpp:1272
#3  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f781e4bf6ba in start_thread (arg=0x7f77c3fff700) at pthread_create.c:333
#5  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f77d89c9700 (LWP 11698)):
[KCrash Handler]
#6  QOpenGLFunctions::glGenTextures (textures=0x7f77c8144968, n=3, this=0x7f77cc403590) at /usr/include/x86_64-linux-gnu/qt5/QtGui/qopenglfunctions.h:807
#7  uploadTextures (context=<optimized out>, frame=..., texture=texture@entry=0x7f77c8144968) at /workspace/build/src/monitor/glwidget.cpp:343
#8  0x000000000072e22b in FrameRenderer::showFrame (this=this@entry=0x7f77c8144930, frame=<incomplete type>) at /workspace/build/src/monitor/glwidget.cpp:1323
#9  0x00000000008853ac in FrameRenderer::qt_static_metacall (_o=0x7f77c8144930, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/src/moc_glwidget.cpp:777
#10 0x00007f7820a38a19 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f782146689c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f782146e296 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f7820a0ccf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f7820a0f3bb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7820a5fe13 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f7818ff21a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f7818ff2400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f7818ff24ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f7820a6023b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7820a0acea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f782082ffb4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f781e4bf6ba in start_thread (arg=0x7f77d89c9700) at pthread_create.c:333
#24 0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f77d92da700 (LWP 11697)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7820835a4b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f7824e06eed in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f7824e077c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f781e4bf6ba in start_thread (arg=0x7f77d92da700) at pthread_create.c:333
#6  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f77da462700 (LWP 11695)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f77fb86530f in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
#2  0x00007f781e4bf6ba in start_thread (arg=0x7f77da462700) at pthread_create.c:333
#3  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f77dbfff700 (LWP 11693)):
#0  0x00007f781fe2cb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7818ff239c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7818ff24ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7820a6023b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7820a0acea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f782082ffb4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7821c30675 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f781e4bf6ba in start_thread (arg=0x7f77dbfff700) at pthread_create.c:333
#9  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f77e0cc3700 (LWP 11692)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f7820835986 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f782083123a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f781e4bf6ba in start_thread (arg=0x7f77e0cc3700) at pthread_create.c:333
#5  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f77e1d85700 (LWP 11691)):
#0  0x00007f781fe2869d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7819035740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7818ff1e84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7818ff2340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7818ff24ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7820a6023b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7820a0acea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f782082ffb4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7821c30675 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f781e4bf6ba in start_thread (arg=0x7f77e1d85700) at pthread_create.c:333
#11 0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f77ebd10700 (LWP 11690)):
#0  0x00007f781fe2cb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f77f3abc64c in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007f781e4bf6ba in start_thread (arg=0x7f77ebd10700) at pthread_create.c:333
#3  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f7807fff700 (LWP 11689)):
#0  0x00007f781fe2cb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7818ff239c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7818ff24ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7820a6023b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7820a0acea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f782082ffb4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f78265bb7a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f781e4bf6ba in start_thread (arg=0x7f7807fff700) at pthread_create.c:333
#9  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f780dcdc700 (LWP 11688)):
#0  0x00007f781fe2cb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7818732c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f78187348d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7810866a39 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f7820834b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f781e4bf6ba in start_thread (arg=0x7f780dcdc700) at pthread_create.c:333
#6  0x00007f781fe3882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f782654e8c0 (LWP 11687)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7818732eb9 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7818734617 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7818734721 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f781e916a47 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007f77ffd4a5a8 in ?? () from /usr/lib/nvidia-367/libGLX_nvidia.so.0
#6  0x00007f77ffd4ae85 in ?? () from /usr/lib/nvidia-367/libGLX_nvidia.so.0
#7  0x00007f7815acc3bc in ?? () from /usr/lib/nvidia-367/libGLX.so.0
#8  0x00007f7815acca03 in ?? () from /usr/lib/nvidia-367/libGLX.so.0
#9  0x00007f7826738458 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#10 0x00007f78267368c7 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#11 0x00007f781086d081 in QXcbIntegration::createPlatformOpenGLContext(QOpenGLContext*) const () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007f7820d9b77d in QOpenGLContext::create() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f7824e06525 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f7824e06953 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f7820d69fc5 in QWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007f7824e3c285 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f782146689c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f782146e296 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f7820a0ccf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7820d5f3ed in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007f7820d6001d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f7820d3de6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007f781089c710 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#24 0x00007f7818ff21a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f7818ff2400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f7818ff24ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f7820a6021f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f7820a0acea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f7820a132fc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x000000000048c1f1 in main (argc=<optimized out>, argv=<optimized out>) at /workspace/build/src/main.cpp:164
============================================================================



=============================================================================
Hardware and drivers
=============================================================================
> lspci -k
00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07)
        Subsystem: Dell Skylake Host Bridge/DRAM Registers
        Kernel driver in use: skl_uncore
00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller (x16) (rev 07)
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
        Subsystem: Dell Sunrise Point-H USB 3.0 xHCI Controller
        Kernel driver in use: xhci_hcd
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
        Subsystem: Dell Sunrise Point-H Thermal subsystem
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
        Subsystem: Dell Sunrise Point-H CSME HECI
        Kernel driver in use: mei_me
        Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31)
        Subsystem: Dell Sunrise Point-H SATA controller [AHCI mode]
        Kernel driver in use: ahci
        Kernel modules: ahci
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
        Subsystem: Dell Sunrise Point-H LPC Controller
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
        DeviceName: Onboard SATA #1
        Subsystem: Dell Sunrise Point-H PMC
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
        Subsystem: Dell Sunrise Point-H HD Audio
        Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
        Subsystem: Dell Sunrise Point-H SMBus
        Kernel modules: i2c_i801
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
        Subsystem: Dell Ethernet Connection (2) I219-V
        Kernel driver in use: e1000e
        Kernel modules: e1000e
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750 Ti] (rev a2)
        Subsystem: NVIDIA Corporation GM107 [GeForce GTX 750 Ti]
        Kernel driver in use: nvidia
        Kernel modules: nvidiafb, nouveau, nvidia_367, nvidia_367_drm
01:00.1 Audio device: NVIDIA Corporation Device 0fbc (rev a1)
        Subsystem: NVIDIA Corporation Device 105f
        Kernel modules: snd_hda_intel
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)
        Subsystem: Intel Corporation Dual Band Wireless-AC 7265
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi
03:00.0 Non-Volatile memory controller: OCZ Technology Group, Inc. Device 6018 (rev 01)
        Subsystem: OCZ Technology Group, Inc. Device 6018
        Kernel driver in use: nvme
        Kernel modules: nvme
=============================================================================
Comment 6 S. Christian Collins 2017-01-24 17:19:48 UTC 
Running into the same problem here using kdenlive 16.12.1 on KDE neon with a GeForce GTX 970. System details below.

I find that the crash doesn't occur using the kdenlive 16.12.1 appimage. Perhaps the newer MLT version included in the appimage is the difference (6.5.0 vs. 6.0.0)?

** My System **
OS: KDE Neon 5.8.5 64-bit (Plasma Desktop 5.8.5, KDE Frameworks 5.30.0, Qt 5.7.0)
Kdenlive version: 16.12.1
MLT version: 6.0.0
Motherboard: ASRock X58 Extreme3 (Intel X58 chipset)
CPU: Intel Core i7 930 (2.8 GHz quad-core)
RAM: 12GB DDR3
Video: NVIDIA GeForce GTX 970 w/ 4GB RAM (PCI Express)
Sound Card #1: Sound Blaster Audigy 2 ZS Gold
Sound Card #2: Echo Gina3G
Linux Kernel: 4.4.0.59-generic
NVIDIA video driver: 367.57
Screen #1 Resolution: 1920 x 1280 @ 144 Hz (screen 1, marked as primary)
Screen #2 Resolution: 1280 x 1024 @ 75 Hz (screen 0)
Comment 7 lctrgk 2017-01-25 04:45:38 UTC 
(In reply to S. Christian Collins from comment #6)
> Running into the same problem here using kdenlive 16.12.1 on KDE neon with a
> GeForce GTX 970. System details below.
> 
> I find that the crash doesn't occur using the kdenlive 16.12.1 appimage.
> Perhaps the newer MLT version included in the appimage is the difference
> (6.5.0 vs. 6.0.0)?
> 
> ** My System **
> OS: KDE Neon 5.8.5 64-bit (Plasma Desktop 5.8.5, KDE Frameworks 5.30.0, Qt
> 5.7.0)
> Kdenlive version: 16.12.1
> MLT version: 6.0.0
> Motherboard: ASRock X58 Extreme3 (Intel X58 chipset)
> CPU: Intel Core i7 930 (2.8 GHz quad-core)
> RAM: 12GB DDR3
> Video: NVIDIA GeForce GTX 970 w/ 4GB RAM (PCI Express)
> Sound Card #1: Sound Blaster Audigy 2 ZS Gold
> Sound Card #2: Echo Gina3G
> Linux Kernel: 4.4.0.59-generic
> NVIDIA video driver: 367.57
> Screen #1 Resolution: 1920 x 1280 @ 144 Hz (screen 1, marked as primary)
> Screen #2 Resolution: 1280 x 1024 @ 75 Hz (screen 0)

Thanks for pointing out this, you're right, i just tested and can confirm the appimage version of kdenlive doesn't crash.
Comment 8 Techwolf 2017-01-29 15:21:45 UTC 
I am using an Nvidia Titian with x11-drivers/nvidia-drivers-375.26-r1 
Downgrading to 16.12.0 fixes it.
Gentoo system.

The fix appears to be in portage. Will be testing it later.

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=38ebbd3c17007231b035f1d768dd631da1c8a6d5
Comment 9 lctrgk 2017-02-12 21:06:18 UTC 
Thanks a lot!. 16.12.2 fixed it for me.