GNU gdb (Gentoo 7.11.1 vanilla) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from mkvtoolnix-gui...Reading symbols from /usr/lib64/debug//usr/bin/mkvtoolnix-gui.debug...done. done. [New LWP 1006] [New LWP 1009] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `mkvtoolnix-gui'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000003923ad702c0 in drm_get_id_path_tag_for_fd (fd=8) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/loader/loader.c:151 151 tag = drm_construct_id_path_tag(device); [Current thread is 1 (Thread 0x39240a69740 (LWP 1006))] #0 0x000003923ad702c0 in drm_get_id_path_tag_for_fd (fd=8) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/loader/loader.c:151 #1 loader_get_user_preferred_fd (default_fd=8, different_device=different_device@entry=0x63c6eb92ac) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/loader/loader.c:178 #2 0x000003923ad6f554 in dri3_create_screen (screen=0, priv=0x63c6f9c300) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/glx/dri3_glx.c:780 #3 0x000003923ad3a828 in AllocAndFetchScreenConfigs (priv=0x63c6f9c300, dpy=0x63c6e2fd10) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/glx/glxext.c:806 #4 __glXInitialize (dpy=dpy@entry=0x63c6e2fd10) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/glx/glxext.c:932 #5 0x000003923ad35665 in glXGetFBConfigs (dpy=0x63c6e2fd10, screen=0, nelements=nelements@entry=0x3ecc5fbc99c) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/glx/glxcmds.c:1670 #6 0x000003923ad36db2 in glXChooseFBConfig (dpy=, screen=, attribList=0x63c6f9c238, nitems=0x3ecc5fbcafc) at /var/tmp/portage/media-libs/mesa-13.0.0_rc2/work/mesa-13.0.0-rc2/src/glx/glxcmds.c:1608 #7 0x0000039240c2dd14 in qglx_findConfig(_XDisplay*, int, QSurfaceFormat const&, int) () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so #8 0x0000039240c2df49 in qglx_findVisualInfo(_XDisplay*, int, QSurfaceFormat*) () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so #9 0x000003923677bfed in QXcbWindow::create() () from /usr/lib64/libQt5XcbQpa.so.5 #10 0x00000392367643f0 in QXcbIntegration::createPlatformWindow(QWindow*) const () from /usr/lib64/libQt5XcbQpa.so.5 #11 0x000003923ee21024 in QWindowPrivate::create(bool) () from /usr/lib64/libQt5Gui.so.5 #12 0x000003923f4147e8 in QWidgetPrivate::create_sys(unsigned long long, bool, bool) () from /usr/lib64/libQt5Widgets.so.5 #13 0x000003923f414e69 in QWidget::create(unsigned long long, bool, bool) () from /usr/lib64/libQt5Widgets.so.5 #14 0x000003923f41cf25 in QWidget::setWindowState(QFlags) () from /usr/lib64/libQt5Widgets.so.5 #15 0x000003923f41d316 in QWidget::restoreGeometry(QByteArray const&) () from /usr/lib64/libQt5Widgets.so.5 #16 0x00000063c2b5e353 in mtx::gui::Util::restoreWidgetGeometry (widget=widget@entry=0x63c6e68f30) at src/mkvtoolnix-gui/util/widget.cpp:124 #17 0x00000063c2a51ce8 in mtx::gui::MainWindow::MainWindow (this=0x63c6e68f30, parent=) at src/mkvtoolnix-gui/main_window/main_window.cpp:67 #18 0x00000063c29c8c16 in std::make_unique () at /usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/g++-v5/bits/unique_ptr.h:765 #19 mtx::gui::App::run (this=0x63c6dfdcf0) at src/mkvtoolnix-gui/app.cpp:486 #20 0x00000063c2b22aea in main (argc=1, argv=0x3ecc5fbd338) at src/mkvtoolnix-gui/mkvtoolnix_gui.cpp:47 (gdb) q