Bug 377677 - kdenlive crashed when loading a MTS video file, NVIDIA card & Prop. drivers loaded
Summary: kdenlive crashed when loading a MTS video file, NVIDIA card & Prop. drivers ...
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: User Interface & Miscellaneous (show other bugs)
Version: 16.04.0
Platform: unspecified Linux
: NOR crash
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords: drkonqi, triaged
Depends on:
Blocks:
 
Reported: 2017-03-16 05:54 UTC by Farrell McGovern
Modified: 2018-10-28 03:41 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

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Description Farrell McGovern 2017-03-16 05:54:58 UTC 
Application: kdenlive (16.04.3)

Qt Version: 5.6.1
Frameworks Version: 5.28.0
Operating System: Linux 4.4.0-67-generic x86_64
Distribution: Linux Mint 18.1 Serena

-- Information about the crash:
- What I was doing when the application crashed:
I attempted to load an MTS video file (H264), and Kdenlive crashes. I tried it multiiple times, and it happens 100% of the time. I've tried different files, but they all came from a JVC GZ-HM30BU camcorder. When I tried it without the GPU rendering enabled, it loaded fine.
- Custom settings of the application:
I had enabled GPU rendering on Kdenlive, as I have an NVIDIA, and I have the NVIDIA Proprietory driver loaded. 

01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750] (rev a2)
nvidia-367/xenial-updates,xenial-security,now 367.57-0ubuntu0.16.04.1 amd64 [installed]

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Aborted
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 0x7fc5083898c0 (LWP 13795))]

Thread 21 (Thread 0x7fc496de8700 (LWP 13831)):
[KCrash Handler]
#6  0x00007fc501835428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fc50183702a in __GI_abort () at abort.c:89
#8  0x00007fc50182dbd7 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7fc4e4f90df7 "status == 0x8CD5", file=file@entry=0x7fc4e4f90917 "effect_chain.cpp", line=line@entry=1746, function=function@entry=0x7fc4e4f91120 "void movit::EffectChain::render_to_fbo(GLuint, unsigned int, unsigned int)") at assert.c:92
#9  0x00007fc50182dc82 in __GI___assert_fail (assertion=0x7fc4e4f90df7 "status == 0x8CD5", file=0x7fc4e4f90917 "effect_chain.cpp", line=1746, function=0x7fc4e4f91120 "void movit::EffectChain::render_to_fbo(GLuint, unsigned int, unsigned int)") at assert.c:101
#10 0x00007fc4e4f4c442 in movit::EffectChain::render_to_fbo(unsigned int, unsigned int, unsigned int) () from /usr/lib/x86_64-linux-gnu/libmovit.so.4
#11 0x00007fc4e51bb7af in GlslManager::render_frame_texture(movit::EffectChain*, mlt_frame_s*, int, int, unsigned char**) () from /usr/lib/x86_64-linux-gnu/mlt/libmltopengl.so
#12 0x00007fc4e51be802 in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltopengl.so
#13 0x00007fc5073107a8 in mlt_frame_get_image () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#14 0x00007fc507326679 in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#15 0x00007fc507310757 in mlt_frame_get_image () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#16 0x00007fc507323e24 in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#17 0x000055a1f8ed5f6d in ?? ()
#18 0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fc5001d76ba in start_thread (arg=0x7fc496de8700) at pthread_create.c:333
#20 0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fc4b356c700 (LWP 13829)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc5073240ab in mlt_consumer_rt_frame () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#2  0x00007fc4db29cd90 in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
#3  0x00007fc5001d76ba in start_thread (arg=0x7fc4b356c700) at pthread_create.c:333
#4  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fc49a350700 (LWP 13822)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49a350700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fc49ab51700 (LWP 13821)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49ab51700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fc49b352700 (LWP 13820)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49b352700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fc49bb53700 (LWP 13819)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49bb53700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fc49c354700 (LWP 13818)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49c354700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fc49cb55700 (LWP 13817)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49cb55700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fc49d356700 (LWP 13816)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49d356700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fc49db57700 (LWP 13815)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc49db57700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fc4c165f700 (LWP 13814)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4d6ace8ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007fc5001d76ba in start_thread (arg=0x7fc4c165f700) at pthread_create.c:333
#3  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fc4975e9700 (LWP 13809)):
#0  0x00007fc5018fab5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc4fbbfa38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc50253f37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5023109e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc5001d76ba in start_thread (arg=0x7fc4975e9700) at pthread_create.c:333
#8  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fc4b1024700 (LWP 13808)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc5023166bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fc5069b7a8d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007fc5069b8365 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5001d76ba in start_thread (arg=0x7fc4b1024700) at pthread_create.c:333
#6  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fc4b3ef8700 (LWP 13806)):
#0  0x00007fc5018fab5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc4fbbfa38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc50253f37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5023109e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc5001d76ba in start_thread (arg=0x7fc4b3ef8700) at pthread_create.c:333
#8  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fc4c0877700 (LWP 13805)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc5023166bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fc5069b7a8d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007fc5069b8365 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5001d76ba in start_thread (arg=0x7fc4c0877700) at pthread_create.c:333
#6  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fc4c2ffe700 (LWP 13800)):
#0  0x00007fc4fbbf9f4c in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc4fbbfa3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc50253f37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5023109e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc5037986b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fc5001d76ba in start_thread (arg=0x7fc4c2ffe700) at pthread_create.c:333
#9  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fc4c37ff700 (LWP 13799)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fc5023165f6 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fc502311e2a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc5001d76ba in start_thread (arg=0x7fc4c37ff700) at pthread_create.c:333
#5  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fc4c8f32700 (LWP 13798)):
#0  0x00007fc5018f669d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc4fbc3d6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc4fbbf9e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc4fbbfa330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc50253f37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc5023109e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fc5037986b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fc5001d76ba in start_thread (arg=0x7fc4c8f32700) at pthread_create.c:333
#11 0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fc4edecf700 (LWP 13797)):
#0  0x00007fc4fbc3ea94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc4fbbf9910 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc4fbbfa2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc50253f37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc5023109e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc5083e5515 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fc5001d76ba in start_thread (arg=0x7fc4edecf700) at pthread_create.c:333
#10 0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fc4ef8ef700 (LWP 13796)):
#0  0x00007fc5018fab5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc4f9f89c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc4f9f8b8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc4f24bad29 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fc502315808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc5001d76ba in start_thread (arg=0x7fc4ef8ef700) at pthread_create.c:333
#6  0x00007fc50190682d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fc5083898c0 (LWP 13795)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc4f9f89eb9 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc4f9f8b617 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc4f9f8b721 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007fc4f24cfbce in QXcbWindow::frameMargins() const () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007fc502845555 in QWindow::frameMargins() const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#6  0x00007fc503003072 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007fc503003203 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007fc5030039a7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fc503006dab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fc502fa4afc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fc502faa036 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fc5024ea2a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fc50283ceb1 in QGuiApplicationPrivate::processGeometryChangeEvent(QWindowSystemInterfacePrivate::GeometryChangeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007fc502841c4d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007fc50281f78b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007fc4f24f0d40 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#17 0x00007fc4fbbfa197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fc4fbbfa3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fc4fbbfa49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fc50253f35f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fc5024e7ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fc5024f06bc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055a1f8c793da in ?? ()
#24 0x00007fc501820830 in __libc_start_main (main=0x55a1f8c78700, argc=1, argv=0x7fffcf81e508, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcf81e4f8) at ../csu/libc-start.c:291
#25 0x000055a1f8c79a59 in _start ()

Possible duplicates by query: bug 359869.

Reported using DrKonqi
Comment 1 Wegwerf 2017-03-17 17:00:10 UTC 
1. GPU rendering is experimental and unsupported.
2. You are on an unsupported Kdenlive version. Upgrade Kdenlive and MLT first to most recent versions 16.12.x and 6.5.x/6.4.x.
3. Does the crash happen with GPU rendering off?
4. Does the crash happen when playing the MTS video clip using melt?
4. Does the crash happen when playing the MTS video clip using ffplay?
Comment 2 andrew.walker27 2017-06-28 21:13:53 UTC 
I'm also having the same issue running on Gentoo. I'm running kdenlive-17.04.2, mlt-6.4.1-r2 and ffmpeg-3.3.2. I don't have GPU processing enabled in playback on the configuration screen. 
It doesn't actually appear to be due to an MTS clip, although that does instantly crash kdenlive, I actually get a 'kdenlive closed unexpectedly' error just starting it up and closing it down! This occurs regardless of loading mts videos and occurs regardless of whether the 'exit'menu button or top corner 'X' are used.

I get these messages upon a crash if I start kdenlive from a terminal.
QXcbConnection: XCB error: 8 (BadMatch), sequence: 45982, resource id: 71303589, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 46029, resource id: 71303589, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 46039, resource id: 71303589, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 46042, resource id: 71303589, major code: 130 (Unknown), minor code: 3
QXcbConnection: XCB error: 8 (BadMatch), sequence: 46061, resource id: 71303589, major code: 130 (Unknown), minor code: 3
[swscaler @ 0x7f81a13b0fa0] Warning: data is not aligned! This can lead to a speedloss
KCrash: Application 'kdenlive' crashing...
KCrash: Attempting to start /usr/lib64/libexec/drkonqi from kdeinit
sock_file=/var/run/user/1003/kdeinit5__0
QSocketNotifier: Invalid socket 16 and type 'Read', disabling...
QSocketNotifier: Invalid socket 26 and type 'Read', disabling...
QSocketNotifier: Invalid socket 56 and type 'Read', disabling...
QSocketNotifier: Invalid socket 21 and type 'Read', disabling...
QSocketNotifier: Invalid socket 57 and type 'Exception', disabling...
QSocketNotifier: Invalid socket 25 and type 'Read', disabling...

I don't know if the error is relevant or of use for diagnosis but I thought I'd post it in absence of any debug info.
Comment 3 Andrew Crouthamel 2018-09-28 02:39:06 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Andrew Crouthamel 2018-10-28 03:41:54 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!