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Thread 2 (Thread 3624):
#0  0x00007f0c75465f93 in poll () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f0c74d6f41f in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#2  0x00007f0c74d5ed86 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
No symbol table info available.
#3  0x00007f0c74d60809 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
No symbol table info available.
#4  0x00007f0c74d608c0 in pa_mainloop_run () from /usr/lib/libpulse.so.0
No symbol table info available.
#5  0x00007f0c74d6f21b in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#6  0x00007f0c709280e8 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
No symbol table info available.
#7  0x00007f0c77e149ca in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#8  0x00007f0c754726dd in clone () from /lib/libc.so.6
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
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Thread 1 (Thread 3606):
#0  0x00007f0c75c71423 in __dynamic_cast () from /usr/lib/libstdc++.so.6
No symbol table info available.
#1  0x000000000059cbc7 in boost::shared_ptr<GLTexture> boost::dynamic_pointer_cast<GLTexture, Texture>(boost::shared_ptr<Texture> const&) ()
No symbol table info available.
#2  0x0000000000599d4b in GLRenderer::draw_surface(DrawingRequest const&) ()
No symbol table info available.
#3  0x0000000000469763 in DrawingContext::handle_drawing_requests(std::vector<DrawingRequest*, std::allocator<DrawingRequest*> >&) ()
No symbol table info available.
#4  0x000000000046ae3b in DrawingContext::do_drawing() ()
No symbol table info available.
#5  0x00000000004fa768 in ScreenManager::draw(DrawingContext&) ()
No symbol table info available.
#6  0x00000000004faaf8 in ScreenManager::run(DrawingContext&) ()
No symbol table info available.
#7  0x0000000000534858 in Main::run(int, char**) ()
No symbol table info available.
#8  0x00000000004685a5 in main ()
No symbol table info available.