SUMMARY Failed to burn ISO data to DVD-R, application crashed without warning STEPS TO REPRODUCE 1. Initiate K3b 2. Load DVD-R into drive 3. select "Burn ISO" and avigate to directory containing ISO, click on "Burn" icon OBSERVED RESULT DVD drive ran for a few seconds; modal dialog appeared; DVD ejected (empty) and app closed. EXPECTED RESULT DVD-R with LMDE 4 ISO SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Mint 20.1 (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION =================================================================== Info =================================================================== PID: 4253 (k3b) UID: 1000 (derek) GID: 1000 (derek) Signal: 11 (SEGV) Timestamp: Mon 2021-03-29 09:59:24 BST (18min ago) Command Line: k3b burn:/// Executable: /usr/bin/k3b Control Group: /user.slice/user-1000.slice/session-c2.scope Unit: session-c2.scope Slice: user-1000.slice Session: c2 Owner UID: 1000 (derek) Boot ID: c44b5972e364478ab33cf1c1f48f6e61 Machine ID: b76cc7b1bbdc489e93909d2043031de8 Hostname: SOLENT9 Storage: /var/lib/systemd/coredump/core.k3b.1000.c44b5972e364478ab33cf1c1f48f6e61.4253.1617008364000000000000.lz4 Message: Process 4253 (k3b) of user 1000 dumped core. Stack trace of thread 4253: #0 0x00007f7c641fb545 _ZN11QMetaObject12invokeMethodEP7QObjectPKcN2Qt14ConnectionTypeE22QGenericReturnArgument16QGenericArgumentS7_S7_S7_S7_S7_S7_S7_S7_S7_ (libQt5Core.so.5 + 0x296545) #1 0x0000564f5538b9bc n/a (k3b + 0x949bc) #2 0x0000564f553764c2 n/a (k3b + 0x7f4c2) #3 0x00007f7c63bb70b3 __libc_start_main (libc.so.6 + 0x270b3) #4 0x0000564f5537671e _start (k3b + 0x7f71e) Stack trace of thread 4271: #0 0x00007f7c63ca5aff __GI___poll (libc.so.6 + 0x115aff) #1 0x00007f7c5e77ac1a n/a (libxcb.so.1 + 0xbc1a) #2 0x00007f7c5e77c90a xcb_wait_for_event (libxcb.so.1 + 0xd90a) #3 0x00007f7c5a77e298 n/a (libQt5XcbQpa.so.5 + 0x78298) #4 0x00007f7c640239d2 n/a (libQt5Core.so.5 + 0xbe9d2) #5 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #6 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4275: #0 0x00007f7c63ca5aff __GI___poll (libc.so.6 + 0x115aff) #1 0x00007f7c5ecd036e n/a (libglib-2.0.so.0 + 0x5236e) #2 0x00007f7c5ecd04a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3) #3 0x00007f7c5ecd04f1 n/a (libglib-2.0.so.0 + 0x524f1) #4 0x00007f7c5ecf9ad1 n/a (libglib-2.0.so.0 + 0x7bad1) #5 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #6 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4281: #0 0x00007f7c63ca5aff __GI___poll (libc.so.6 + 0x115aff) #1 0x00007f7c5ecd036e n/a (libglib-2.0.so.0 + 0x5236e) #2 0x00007f7c5ecd04a3 g_main_context_iteration (libglib-2.0.so.0 + 0x524a3) #3 0x00007f7c64243565 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2de565) #4 0x00007f7c641ea4db _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2854db) #5 0x00007f7c64022785 _ZN7QThread4execEv (libQt5Core.so.5 + 0xbd785) #6 0x00007f7c6514befa n/a (libQt5DBus.so.5 + 0x17efa) #7 0x00007f7c640239d2 n/a (libQt5Core.so.5 + 0xbe9d2) #8 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #9 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4286: #0 0x00007f7c5f555376 futex_wait_cancelable (libpthread.so.0 + 0x10376) #1 0x00007f7c51511e6b n/a (i965_dri.so + 0x55ae6b) #2 0x00007f7c51511a6b n/a (i965_dri.so + 0x55aa6b) #3 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #4 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4287: #0 0x00007f7c5f555376 futex_wait_cancelable (libpthread.so.0 + 0x10376) #1 0x00007f7c51511e6b n/a (i965_dri.so + 0x55ae6b) #2 0x00007f7c51511a6b n/a (i965_dri.so + 0x55aa6b) #3 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #4 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4276: #0 0x00007f7c63ca5aff __GI___poll (libc.so.6 + 0x115aff) #1 0x00007f7c5ecd036e n/a (libglib-2.0.so.0 + 0x5236e) #2 0x00007f7c5ecd06f3 g_main_loop_run (libglib-2.0.so.0 + 0x526f3) #3 0x00007f7c5e0b2f8a n/a (libgio-2.0.so.0 + 0x11ef8a) #4 0x00007f7c5ecf9ad1 n/a (libglib-2.0.so.0 + 0x7bad1) #5 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #6 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4288: #0 0x00007f7c5f555376 futex_wait_cancelable (libpthread.so.0 + 0x10376) #1 0x00007f7c51511e6b n/a (i965_dri.so + 0x55ae6b) #2 0x00007f7c51511a6b n/a (i965_dri.so + 0x55aa6b) #3 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #4 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) Stack trace of thread 4289: #0 0x00007f7c5f555376 futex_wait_cancelable (libpthread.so.0 + 0x10376) #1 0x00007f7c51511e6b n/a (i965_dri.so + 0x55ae6b) #2 0x00007f7c51511a6b n/a (i965_dri.so + 0x55aa6b) #3 0x00007f7c5f54e609 start_thread (libpthread.so.0 + 0x9609) #4 0x00007f7c63cb2293 __clone (libc.so.6 + 0x122293) =================================================================== GDB Log =================================================================== [New LWP 4253] [New LWP 4271] [New LWP 4275] [New LWP 4281] [New LWP 4286] [New LWP 4287] [New LWP 4276] [New LWP 4288] [New LWP 4289] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `k3b burn:///'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 [Current thread is 1 (Thread 0x7f7c5ae3ab40 (LWP 4253))] =================================================================== GDB Backtrace =================================================================== [New LWP 4253] [New LWP 4271] [New LWP 4275] [New LWP 4281] [New LWP 4286] [New LWP 4287] [New LWP 4276] [New LWP 4288] [New LWP 4289] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `k3b burn:///'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 [Current thread is 1 (Thread 0x7f7c5ae3ab40 (LWP 4253))] #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x0000564f5538b9bc in ?? () #2 0x0000564f553764c2 in ?? () #3 0x00007f7c63bb70b3 in __libc_start_main (main=0x564f55374eb0, argc=2, argv=0x7fff02160fe8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff02160fd8) at ../csu/libc-start.c:308 #4 0x0000564f5537671e in _start () =================================================================== GDB Backtrace (all threads) =================================================================== [New LWP 4253] [New LWP 4271] [New LWP 4275] [New LWP 4281] [New LWP 4286] [New LWP 4287] [New LWP 4276] [New LWP 4288] [New LWP 4289] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `k3b burn:///'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 [Current thread is 1 (Thread 0x7f7c5ae3ab40 (LWP 4253))] Thread 9 (Thread 0x7f7c42ffd700 (LWP 4289)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564f558fcb18) at ../sysdeps/nptl/futex-internal.h:183 __ret = -512 oldtype = 0 err = <optimized out> oldtype = <optimized out> err = <optimized out> __ret = <optimized out> resultvar = <optimized out> __arg4 = <optimized out> __arg3 = <optimized out> __arg2 = <optimized out> __arg1 = <optimized out> _a4 = <optimized out> _a3 = <optimized out> _a2 = <optimized out> _a1 = <optimized out> #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x564f558fcac8, cond=0x564f558fcaf0) at pthread_cond_wait.c:508 spin = 0 buffer = {__routine = 0x7f7c5f555050 <__condvar_cleanup_waiting>, __arg = 0x7f7c42ffc970, __canceltype = 0, __prev = 0x0} cbuffer = {wseq = 6, cond = 0x564f558fcaf0, mutex = 0x564f558fcac8, private = 0} err = <optimized out> g = 0 flags = <optimized out> g1_start = <optimized out> signals = <optimized out> result = 0 wseq = 6 seq = 3 private = <optimized out> maxspin = <optimized out> err = <optimized out> result = <optimized out> wseq = <optimized out> g = <optimized out> seq = <optimized out> flags = <optimized out> private = <optimized out> signals = <optimized out> g1_start = <optimized out> spin = <optimized out> buffer = <optimized out> cbuffer = <optimized out> s = <optimized out> #2 __pthread_cond_wait (cond=0x564f558fcaf0, mutex=0x564f558fcac8) at pthread_cond_wait.c:638 No locals. #3 0x00007f7c51511e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #4 0x00007f7c51511a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171676735232, 1278223078167114429, 140733228382478, 140733228382479, 140733228382480, 140171676732352, -1205367240403488067, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 8 (Thread 0x7f7c437fe700 (LWP 4288)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564f558fcb18) at ../sysdeps/nptl/futex-internal.h:183 __ret = -512 oldtype = 0 err = <optimized out> oldtype = <optimized out> err = <optimized out> __ret = <optimized out> resultvar = <optimized out> __arg4 = <optimized out> __arg3 = <optimized out> __arg2 = <optimized out> __arg1 = <optimized out> _a4 = <optimized out> _a3 = <optimized out> _a2 = <optimized out> _a1 = <optimized out> #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x564f558fcac8, cond=0x564f558fcaf0) at pthread_cond_wait.c:508 spin = 0 buffer = {__routine = 0x7f7c5f555050 <__condvar_cleanup_waiting>, __arg = 0x7f7c437fd970, __canceltype = 0, __prev = 0x0} cbuffer = {wseq = 4, cond = 0x564f558fcaf0, mutex = 0x564f558fcac8, private = 0} err = <optimized out> g = 0 flags = <optimized out> g1_start = <optimized out> signals = <optimized out> result = 0 wseq = 4 seq = 2 private = <optimized out> maxspin = <optimized out> err = <optimized out> result = <optimized out> wseq = <optimized out> g = <optimized out> seq = <optimized out> flags = <optimized out> private = <optimized out> signals = <optimized out> g1_start = <optimized out> spin = <optimized out> buffer = <optimized out> cbuffer = <optimized out> s = <optimized out> #2 __pthread_cond_wait (cond=0x564f558fcaf0, mutex=0x564f558fcac8) at pthread_cond_wait.c:638 No locals. #3 0x00007f7c51511e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #4 0x00007f7c51511a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171685127936, 1278223078167114429, 140733228382478, 140733228382479, 140733228382480, 140171685125056, -1205363941331733827, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 7 (Thread 0x7f7c537fe700 (LWP 4276)): #0 0x00007f7c63ca5aff in __GI___poll (fds=0x564f559aa0a0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 resultvar = 18446744073709551100 sc_cancel_oldtype = 0 sc_ret = <optimized out> #1 0x00007f7c5ecd036e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f7c5ecd06f3 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f7c5e0b2f8a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 No symbol table info available. #4 0x00007f7c5ecf9ad1 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171953563392, 1278223078167114429, 140733228382094, 140733228382095, 140733228382240, 140171953560512, -1205399125703822659, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 6 (Thread 0x7f7c43fff700 (LWP 4287)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564f558fcb18) at ../sysdeps/nptl/futex-internal.h:183 __ret = -512 oldtype = 0 err = <optimized out> oldtype = <optimized out> err = <optimized out> __ret = <optimized out> resultvar = <optimized out> __arg4 = <optimized out> __arg3 = <optimized out> __arg2 = <optimized out> __arg1 = <optimized out> _a4 = <optimized out> _a3 = <optimized out> _a2 = <optimized out> _a1 = <optimized out> #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x564f558fcac8, cond=0x564f558fcaf0) at pthread_cond_wait.c:508 spin = 0 buffer = {__routine = 0x7f7c5f555050 <__condvar_cleanup_waiting>, __arg = 0x7f7c43ffe970, __canceltype = 0, __prev = 0x0} cbuffer = {wseq = 2, cond = 0x564f558fcaf0, mutex = 0x564f558fcac8, private = 0} err = <optimized out> g = 0 flags = <optimized out> g1_start = <optimized out> signals = <optimized out> result = 0 wseq = 2 seq = 1 private = <optimized out> maxspin = <optimized out> err = <optimized out> result = <optimized out> wseq = <optimized out> g = <optimized out> seq = <optimized out> flags = <optimized out> private = <optimized out> signals = <optimized out> g1_start = <optimized out> spin = <optimized out> buffer = <optimized out> cbuffer = <optimized out> s = <optimized out> #2 __pthread_cond_wait (cond=0x564f558fcaf0, mutex=0x564f558fcac8) at pthread_cond_wait.c:638 No locals. #3 0x00007f7c51511e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #4 0x00007f7c51511a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171693520640, 1278223078167114429, 140733228382478, 140733228382479, 140733228382480, 140171693517760, -1205365040306490691, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 5 (Thread 0x7f7c50e56700 (LWP 4286)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564f558fcb18) at ../sysdeps/nptl/futex-internal.h:183 __ret = -512 oldtype = 0 err = <optimized out> oldtype = <optimized out> err = <optimized out> __ret = <optimized out> resultvar = <optimized out> __arg4 = <optimized out> __arg3 = <optimized out> __arg2 = <optimized out> __arg1 = <optimized out> _a4 = <optimized out> _a3 = <optimized out> _a2 = <optimized out> _a1 = <optimized out> #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x564f558fcac8, cond=0x564f558fcaf0) at pthread_cond_wait.c:508 spin = 0 buffer = {__routine = 0x7f7c5f555050 <__condvar_cleanup_waiting>, __arg = 0x7f7c50e55970, __canceltype = 0, __prev = 0x0} cbuffer = {wseq = 0, cond = 0x564f558fcaf0, mutex = 0x564f558fcac8, private = 0} err = <optimized out> g = 0 flags = <optimized out> g1_start = <optimized out> signals = <optimized out> result = 0 wseq = 0 seq = 0 private = <optimized out> maxspin = <optimized out> err = <optimized out> result = <optimized out> wseq = <optimized out> g = <optimized out> seq = <optimized out> flags = <optimized out> private = <optimized out> signals = <optimized out> g1_start = <optimized out> spin = <optimized out> buffer = <optimized out> cbuffer = <optimized out> s = <optimized out> #2 __pthread_cond_wait (cond=0x564f558fcaf0, mutex=0x564f558fcac8) at pthread_cond_wait.c:638 No locals. #3 0x00007f7c51511e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #4 0x00007f7c51511a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171909883648, 1278223078167114429, 140733228382478, 140733228382479, 140733228382480, 140171909880768, -1205406878119791939, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 4 (Thread 0x7f7c527fc700 (LWP 4281)): #0 0x00007f7c63ca5aff in __GI___poll (fds=0x7f7c3c017de0, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 resultvar = 18446744073709551100 sc_cancel_oldtype = 0 sc_ret = <optimized out> #1 0x00007f7c5ecd036e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f7c5ecd04a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f7c64243565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #4 0x00007f7c641ea4db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #5 0x00007f7c64022785 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #6 0x00007f7c6514befa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 No symbol table info available. #7 0x00007f7c640239d2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #8 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171936777984, 1278223078167114429, 140733228386750, 140733228386751, 140733228386944, 140171936775104, -1205401325800820035, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #9 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 3 (Thread 0x7f7c53fff700 (LWP 4275)): #0 0x00007f7c63ca5aff in __GI___poll (fds=0x564f55998160, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 resultvar = 18446744073709551100 sc_cancel_oldtype = 0 sc_ret = <optimized out> #1 0x00007f7c5ecd036e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f7c5ecd04a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007f7c5ecd04f1 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #4 0x00007f7c5ecf9ad1 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140171961956096, 1278223078167114429, 140733228381662, 140733228381663, 140733228381808, 140171961953216, -1205400224678579523, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 2 (Thread 0x7f7c59f7f700 (LWP 4271)): #0 0x00007f7c63ca5aff in __GI___poll (fds=0x7f7c59f7e968, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 resultvar = 18446744073709551100 sc_cancel_oldtype = 0 sc_ret = <optimized out> #1 0x00007f7c5e77ac1a in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 No symbol table info available. #2 0x00007f7c5e77c90a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1 No symbol table info available. #3 0x00007f7c5a77e298 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 No symbol table info available. #4 0x00007f7c640239d2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #5 0x00007f7c5f54e609 in start_thread (arg=<optimized out>) at pthread_create.c:477 ret = <optimized out> pd = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140172062095104, 1278223078167114429, 140733228386366, 140733228386367, 140733228386560, 140172062092224, -1205386961819569475, -1205390509548670275}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = 0 #6 0x00007f7c63cb2293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. Thread 1 (Thread 0x7f7c5ae3ab40 (LWP 4253)): #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 No symbol table info available. #1 0x0000564f5538b9bc in ?? () No symbol table info available. #2 0x0000564f553764c2 in ?? () No symbol table info available. #3 0x00007f7c63bb70b3 in __libc_start_main (main=0x564f55374eb0, argc=2, argv=0x7fff02160fe8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff02160fd8) at ../csu/libc-start.c:308 self = <optimized out> result = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {94898733590400, 1278223078167114429, 94898732099312, 140733228388320, 0, 0, -1278128176004107587, -1205295190964342083}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x2, 0x7fff02160fe8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 2}}} not_first_call = <optimized out> #4 0x0000564f5537671e in _start () No symbol table info available. #0 0x00007f7c641fb545 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x0000564f5538b9bc in ?? () #2 0x0000564f553764c2 in ?? () #3 0x00007f7c63bb70b3 in __libc_start_main (main=0x564f55374eb0, argc=2, argv=0x7fff02160fe8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff02160fd8) at ../csu/libc-start.c:308 #4 0x0000564f5537671e in _start ()