. Thread 3 (Thread 0x7fdf5fde4700 (LWP 3281)): #0 0x00007fdf77bfa773 in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007fdf78cd3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007fdf78cd4792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007fdf762de516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 No symbol table info available. #4 0x00007fdf78cf92b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007fdf78870efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007fdf77c0689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #7 0x0000000000000000 in ?? () No symbol table info available. . Thread 2 (Thread 0x7fdf60a11700 (LWP 3280)): #0 0x00007fdf77bfa773 in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007fdf78cd3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007fdf78cd4792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007fdf6b55c9cb in ?? () from /usr/lib/gio/modules/libdconfsettings.so No symbol table info available. #4 0x00007fdf78cf92b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007fdf78870efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007fdf77c0689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #7 0x0000000000000000 in ?? () No symbol table info available. . Thread 1 (Thread 0x7fdf7a9ab9c0 (LWP 3231)): #0 0x00007fdf77b5b3a5 in raise () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007fdf77b5eb0b in abort () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #2 0x00007fdf77b93113 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #3 0x00007fdf77b9da96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #4 0x00007fdf77ba1d7c in free () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #5 0x00007fdf6786a490 in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1 No symbol table info available. #6 0x00007fdf6786b19c in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1 No symbol table info available. #7 0x00007fdf68201bba in intel_batchbuffer_reset () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #8 0x00007fdf682188a6 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #9 0x00007fdf68218fbe in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #10 0x00007fdf67e686a5 in ?? () from /usr/lib/x86_64-linux-gnu/dri/libdricore.so No symbol table info available. #11 0x00007fdf67e6b227 in _mesa_TexSubImage2D () from /usr/lib/x86_64-linux-gnu/dri/libdricore.so No symbol table info available. #12 0x00007fdf62beff3f in nux::IOpenGLSurface::UnlockRect() () from /usr/lib/libnux-graphics-1.0.so.0 No symbol table info available. #13 0x00007fdf62bf0965 in nux::IOpenGLTexture2D::UnlockRect(int) () from /usr/lib/libnux-graphics-1.0.so.0 No symbol table info available. #14 0x00007fdf63324ca0 in unity::PanelMenuView::Draw(nux::GraphicsEngine&, bool) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #15 0x00007fdf62f43cda in nux::View::ProcessDraw(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #16 0x00007fdf62f48ed7 in nux::Layout::ProcessDraw(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #17 0x00007fdf633aab24 in unity::PanelView::DrawContent(nux::GraphicsEngine&, bool) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #18 0x00007fdf62f43cee in nux::View::ProcessDraw(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #19 0x00007fdf62f48ed7 in nux::Layout::ProcessDraw(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #20 0x00007fdf62f11692 in nux::BaseWindow::DrawContent(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #21 0x00007fdf62f43cee in nux::View::ProcessDraw(nux::GraphicsEngine&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #22 0x00007fdf62fbcad1 in nux::WindowCompositor::RenderTopViewContent(nux::BaseWindow*, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #23 0x00007fdf62fbe01a in nux::WindowCompositor::RenderTopViews(bool, std::list, std::allocator > >&, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #24 0x00007fdf62fbe3d5 in nux::WindowCompositor::Draw(bool, bool) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #25 0x00007fdf62fc5b55 in nux::WindowThread::RenderInterfaceFromForeignCmd(nux::Rect*) () from /usr/lib/libnux-1.0.so.0 No symbol table info available. #26 0x00007fdf633991cc in UnityScreen::paintDisplay(CompRegion const&, GLMatrix const&, unsigned int) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #27 0x00007fdf633999af in UnityWindow::glDraw(GLMatrix const&, GLFragment::Attrib&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #28 0x00007fdf68d507cb in GLWindow::glDraw(GLMatrix const&, GLFragment::Attrib&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #29 0x00007fdf68d50bfd in GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #30 0x00007fdf65038c68 in WallWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libwall.so No symbol table info available. #31 0x00007fdf68d50b9f in GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #32 0x00007fdf64e17635 in FadeWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libfade.so No symbol table info available. #33 0x00007fdf68d50b9f in GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #34 0x00007fdf63390c6a in UnityWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #35 0x00007fdf68d50b9f in GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #36 0x00007fdf68d510d9 in PrivateGLScreen::paintOutputRegion(GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #37 0x00007fdf68d515a7 in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #38 0x00007fdf68d514dc in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #39 0x00007fdf65032802 in WallScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libwall.so No symbol table info available. #40 0x00007fdf68d514dc in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #41 0x00007fdf63399b5e in UnityScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #42 0x00007fdf68d514dc in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #43 0x00007fdf68d5322c in PrivateGLScreen::paintOutputs(std::list >&, unsigned int, CompRegion const&) () from /usr/lib/compiz/libopengl.so No symbol table info available. #44 0x00007fdf68f73f09 in CompositeScreen::paint(std::list >&, unsigned int) () from /usr/lib/compiz/libcomposite.so No symbol table info available. #45 0x00007fdf68f7577f in CompositeScreen::handlePaintTimeout() () from /usr/lib/compiz/libcomposite.so No symbol table info available. #46 0x0000000000422d6b in CompTimer::triggerCallback() () No symbol table info available. #47 0x0000000000422ea2 in CompTimeoutSource::callback() () No symbol table info available. #48 0x000000000042239d in CompTimeoutSource::dispatch(sigc::slot_base*) () No symbol table info available. #49 0x00007fdf791cd9df in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/libglibmm-2.4.so.1 No symbol table info available. #50 0x00007fdf78cd3a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #51 0x00007fdf78cd4258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #52 0x00007fdf78cd4792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #53 0x000000000042c816 in CompScreen::eventLoop() () No symbol table info available. #54 0x000000000042022a in main () No symbol table info available.