Fluxbox occasionally dumps a core when laptops running Lumina desktop are closed and reopned. It may also be crashing at other times, but I believe Lumina has a workaround for this and restarts it immediately, so the crash may go unnoticed. I built fluxbox using WITH_DEBUG=yes a while back and was able to capture a backtrace: (lldb) target create "/usr/local/bin/fluxbox" --core "fluxbox.core" Core file '/home/bacon/fluxbox.core' (x86_64) was loaded. (lldb) bt * thread #1, name = 'fluxbox', stop reason = signal SIGABRT * frame #0: 0x00000008009ff33a libc.so.7`__sys_thr_kill + 10 frame #1: 0x0000000800977c74 libc.so.7`__raise + 52 frame #2: 0x0000000800a29109 libc.so.7`abort + 73 frame #3: 0x000000000037664d fluxbox`(anonymous namespace)::handleSignal(signum=11) at main.cc:98:9 frame #4: 0x00000008008b4580 libthr.so.3`___lldb_unnamed_symbol672 + 208 frame #5: 0x00000008008b3b3f libthr.so.3`___lldb_unnamed_symbol653 + 319 frame #6: 0x00007ffffffff8a3 [vdso] frame #7: 0x0000000800a40f91 libc.so.7`___lldb_unnamed_symbol5276 + 801 frame #8: 0x00000008006a8ff8 libX11.so.6`_XFreeAtomTable + 56 frame #9: 0x00000008006aed3a libX11.so.6`_XFreeDisplayStructure + 250 frame #10: 0x0000000800699c20 libX11.so.6`XCloseDisplay + 240 frame #11: 0x00000000003bd107 fluxbox`FbTk::App::~App(this=0x000000080108ca00) at App.cc:69:9 frame #12: 0x0000000000368106 fluxbox`Fluxbox::~Fluxbox(this=0x000000080108ca00) at fluxbox.cc:485:1 frame #13: 0x0000000000368249 fluxbox`Fluxbox::~Fluxbox(this=0x000000080108ca00) at fluxbox.cc:473:21 frame #14: 0x000000000037692b fluxbox`std::__1::auto_ptr<Fluxbox>::~auto_ptr(this=0x000000000041d3c8) at auto_ptr.h:49:54 frame #15: 0x0000000800a2955a libc.so.7`__cxa_finalize + 362 frame #16: 0x0000000800a29ae1 libc.so.7`exit + 33 frame #17: 0x000000000036716f fluxbox`(anonymous namespace)::handleXIOErrors(d=0x000000080109b000) at fluxbox.cc:165:5 frame #18: 0x00000008006c1cae libX11.so.6`_XIOError + 94 frame #19: 0x00000008006c0353 libX11.so.6`_XReply + 915 frame #20: 0x00000008006b4c87 libX11.so.6`XQueryColor + 103 frame #21: 0x00000000003d71fb fluxbox`FbTk::XftFontImp::drawText(this=0x0000000801055760, w=0x0000000801115200, screen=0, gc=0x0000000801096a00, text="LuminaPanel", len=11, x=761, y=11, orient=ROT0) at XftFontImp.cc:126:5 frame #22: 0x00000000003d3873 fluxbox`FbTk::Font::drawText(this=0x00000008010ee260, w=0x0000000801115200, screen=0, gc=0x0000000801096a00, text="LuminaPanel", len=11, x=761, y=11, orient=ROT0) const at Font.cc:288:16 frame #23: 0x0000000000405bce fluxbox`FbTk::TextButton::drawText(this=0x0000000801115200, x_offset=1, y_offset=0, drawable=0x0000000801115200) at TextButton.cc:184:12 frame #24: 0x00000000002ff0a0 fluxbox`IconButton::drawText(this=0x0000000801115200, x=0, y=0, drawable=0x0000000801115200) at IconButton.cc:258:27 frame #25: 0x0000000000405939 fluxbox`FbTk::TextButton::renderForeground(this=0x0000000801115200, win=0x0000000801115200, drawable=0x0000000801115200) at TextButton.cc:117:5 frame #26: 0x00000000003ce4f7 fluxbox`FbTk::FbWindow::clear(this=0x0000000801115200) at FbWindow.cc:281:21 frame #27: 0x00000000003ce54c fluxbox`FbTk::FbWindow::clearArea(this=0x0000000801115200, x=0, y=0, width=1591, height=15, exposures=false) at FbWindow.cc:290:19 frame #28: 0x00000000004058c0 fluxbox`FbTk::TextButton::clearArea(this=0x0000000801115200, x=0, y=0, width=1591, height=15, exposure=false) at TextButton.cc:107:13 frame #29: 0x00000000002fefa0 fluxbox`IconButton::clearArea(this=0x0000000801115200, x=0, y=0, width=1591, height=15, exposure=false) at IconButton.cc:132:23 frame #30: 0x0000000000405d5d fluxbox`FbTk::TextButton::exposeEvent(this=0x0000000801115200, event=0x00007fffffffe2a8) at TextButton.cc:206:5 frame #31: 0x00000000002febdb fluxbox`IconButton::exposeEvent(this=0x0000000801115200, event=0x00007fffffffe2a8) at IconButton.cc:80:27 frame #32: 0x00000000003c32cb fluxbox`FbTk::Container::tryExposeEvent(this=0x00000008010e10d8, event=0x00007fffffffe2a8) at Container.cc:259:12 frame #33: 0x00000000002e73da fluxbox`FbWinFrame::exposeEvent(this=0x00000008010e0fa8, event=0x00007fffffffe2a8) at FbWinFrame.cc:805:29 frame #34: 0x000000000034d9e6 fluxbox`FluxboxWindow::exposeEvent(this=0x00000008010e0a00, ee=0x00007fffffffe2a8) at Window.cc:2165:13 frame #35: 0x00000000003c5f51 fluxbox`FbTk::EventManager::dispatch(this=0x000000000041db40, win=10485991, ev=0x00007fffffffe2a8, parent=false) at EventManager.cc:179:17 frame #36: 0x00000000003c5da7 fluxbox`FbTk::EventManager::handleEvent(this=0x000000000041db40, ev=0x00007fffffffe2a8) at EventManager.cc:48:5 frame #37: 0x0000000000368e91 fluxbox`Fluxbox::handleEvent(this=0x000000080108ca00, e=0x00007fffffffe2a8) at fluxbox.cc:617:37 frame #38: 0x0000000000368993 fluxbox`Fluxbox::eventLoop(this=0x000000080108ca00) at fluxbox.cc:540:17 frame #39: 0x00000000003757e8 fluxbox`main(argc=4, argv=0x00007fffffffe9e8) at main.cc:211:18 frame #40: 0x00000000002a5790 fluxbox`_start(ap=<unavailable>, cleanup=<unavailable>) at crt1_c.c:75:7
Submitted an upstream ticket for this to Fluxbox project https://sourceforge.net/p/fluxbox/bugs/1195/
Thanks, but but I wonder if there's any serious work going upstream. I also wonder if there's a simple way to disable threads. Might lead to a simple workaround.