(gdb) run
Starting program: /usr/local/bin/inkscape 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe4595700 (LWP 28968)]
[New Thread 0x7fffe3d94700 (LWP 28969)]
[New Thread 0x7fffd9859700 (LWP 28970)]
[New Thread 0x7fffcbc7b700 (LWP 28971)]
[New Thread 0x7fffd9058700 (LWP 28972)]
[Thread 0x7fffd9058700 (LWP 28972) exited]
[Thread 0x7fffcbc7b700 (LWP 28971) exited]
[Thread 0x7fffe4595700 (LWP 28968) exited]
[New Thread 0x7fffe4595700 (LWP 28973)]
[New Thread 0x7fffcbc7b700 (LWP 28974)]
[New Thread 0x7fffd9058700 (LWP 28975)]
[New Thread 0x7fffd8857700 (LWP 28976)]
[Thread 0x7fffcbc7b700 (LWP 28974) exited]
[Thread 0x7fffd9058700 (LWP 28975) exited]
[Thread 0x7fffd8857700 (LWP 28976) exited]
[Thread 0x7fffe4595700 (LWP 28973) exited]
[New Thread 0x7fffe4595700 (LWP 28977)]
[New Thread 0x7fffd8857700 (LWP 28978)]
[Thread 0x7fffe4595700 (LWP 28977) exited]
[Thread 0x7fffd8857700 (LWP 28978) exited]
inkscape: tpp.c:63: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= __sched_fifo_min_prio && new_prio <= __sched_fifo_max_prio)' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff01e6425 in __GI_raise (sig=<optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64	../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  0x00007ffff01e6425 in __GI_raise (sig=<optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff01e9b8b in __GI_abort () at abort.c:91
#2  0x00007ffff01df0ee in __assert_fail_base (fmt=<optimized out>, 
    assertion=0x7ffff0581e30 "new_prio == -1 || (new_prio >= __sched_fifo_min_prio && new_prio <= __sched_fifo_max_prio)", file=0x7ffff0581e24 "tpp.c", line=<optimized out>, function=<optimized out>)
    at assert.c:94
#3  0x00007ffff01df192 in __GI___assert_fail (
    assertion=0x7ffff0581e30 "new_prio == -1 || (new_prio >= __sched_fifo_min_prio && new_prio <= __sched_fifo_max_prio)", file=0x7ffff0581e24 "tpp.c", line=63, 
    function=0x7ffff0581f00 <__PRETTY_FUNCTION__.9749> "__pthread_tpp_change_priority")
    at assert.c:103
#4  0x00007ffff0580a45 in __pthread_tpp_change_priority (previous_prio=-1, new_prio=8183)
    at tpp.c:61
#5  0x00007ffff0575bed in __pthread_mutex_lock_full (mutex=0x7c48500) at pthread_mutex_lock.c:415
#6  0x00007fffefe7fd3c in MutexLocker (mutexA=0x7c48500, this=<synthetic pointer>)
    at ../goo/GooMutex.h:78
#7  Page::displaySlice (this=0x7c48460, out=0x7c63910, hDPI=72, vDPI=72, rotate=0, 
    useMediaBox=false, crop=<optimized out>, sliceX=-1, sliceY=-1, sliceW=-1, sliceH=-1, 
    printing=false, abortCheckCbk=0x0, abortCheckCbkData=0x0, annotDisplayDecideCbk=0x0, 
    annotDisplayDecideCbkData=0x0, copyXRef=false) at Page.cc:571
#8  0x00007ffff1806d8b in _poppler_page_render (page=0x7bf4480, cairo=0x3253a00, 
    printing=<optimized out>, print_flags=<optimized out>) at poppler-page.cc:362
#9  0x0000000000692f8f in Inkscape::Extension::Internal::PdfImportDialog::_setPreviewPage (
    this=0x7c43050, page=<optimized out>) at extension/internal/pdfinput/pdf-input.cpp:610
#10 0x00000000006948e7 in Inkscape::Extension::Internal::PdfImportDialog::PdfImportDialog (
    this=this@entry=0x7c43050, doc=doc@entry=0x7c01430, __in_chrg=<optimized out>, 
    __vtt_parm=<optimized out>) at extension/internal/pdfinput/pdf-input.cpp:337
#11 0x0000000000695173 in Inkscape::Extension::Internal::PdfInput::open (this=0x127f850, 
    uri=0x47d9698 "/home/user/path/testfile2.pdf")
    at extension/internal/pdfinput/pdf-input.cpp:700
#12 0x000000000066296a in Inkscape::Extension::Input::open (this=0x13cb4a0, 
    uri=0x47d9698 "/home/user/path/testfile2.pdf") at extension/input.cpp:153
#13 0x0000000000660752 in Inkscape::Extension::open (key=<optimized out>, 
    filename=0x47d9698 "/home/user/path/testfile2.pdf")
    at extension/system.cpp:117
#14 0x00000000004c3afa in file_import (in_doc=in_doc@entry=0x15beea0, uri=..., key=key@entry=0x0)
    at file.cpp:1142
#15 0x00000000004c47f9 in sp_file_import (parentWindow=...) at file.cpp:1348
#16 0x00000000006fe6f2 in emit (impl=0x33c7b30) at /usr/include/sigc++-2.0/sigc++/signal.h:776
#17 emit (this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:2673
#18 sp_action_perform (action=<optimized out>) at helper/action.cpp:136
#19 0x00007ffff12a9140 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff12ba550 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff12c24af in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff12c2642 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007ffff6acbb8c in gtk_widget_activate () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#24 0x00007ffff69c715d in gtk_menu_shell_activate_item ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#25 0x00007ffff69c74ec in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#26 0x00007ffff69b3599 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#27 0x00007ffff12a9140 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff12ba2d0 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff12c20cb in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff12c2642 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007ffff6acc95e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007ffff69b1934 in gtk_propagate_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#33 0x00007ffff69b1c8b in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#34 0x00007ffff6626d7c in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#35 0x00007ffff0fe9ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff0fe9de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007ffff0fea1e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007ffff69b0c77 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#39 0x0000000000475fbb in sp_main_gui (argc=1, argv=0x7fffffffe1d8) at main.cpp:1075
#40 0x00007ffff01d176d in __libc_start_main (main=0x45af50 <main(int, char**)>, argc=1, 
    ubp_av=0x7fffffffe1d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7fffffffe1c8) at libc-start.c:226
#41 0x0000000000472c81 in _start ()