Undefined set logging command: "gdb.gchem3d.log". Try "help set logging". Already logging to gdb.txt. Starting program: /usr/bin/gchem3d [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffe99e6700 (LWP 23025)] [New Thread 0x7fffe91e5700 (LWP 23026)] [New Thread 0x7fffe88c4700 (LWP 23027)] Thread 1 "gchem3d" received signal SIGSEGV, Segmentation fault. 0x00007ffff4034099 in XQueryExtension (dpy=0x555555794900, name=0x7fffec35cb96 "GLX", major_opcode=0x7fffffffe0dc, first_event=0x7fffffffe0e0, first_error=0x7fffffffe0e4) at ../../src/QuExt.c:43 43 ../../src/QuExt.c: Datei oder Verzeichnis nicht gefunden. #0 0x00007ffff4034099 in XQueryExtension (dpy=0x555555794900, name=0x7fffec35cb96 "GLX", major_opcode=0x7fffffffe0dc, first_event=0x7fffffffe0e0, first_error=0x7fffffffe0e4) at ../../src/QuExt.c:43 rep = {type = 224 '\340', pad1 = 80 'P', sequenceNumber = 21910, length = 21845, present = 0 '\000', major_opcode = 96 '`', first_event = 190 '\276', first_error = 32 ' ', pad3 = 0, pad4 = 0, pad5 = 0, pad6 = 56, pad7 = 0} req = #1 0x00007fffec355219 in glXQueryExtension () at /usr/lib/x86_64-linux-gnu/libGLX.so.0 #2 0x00007ffff7bb85d8 in gcugtk::GLView::GLView(gcu::GLDocument*) (this= 0x5555557d1400, __vtt_parm=0x55555575aed8 , pDoc=, __in_chrg=) at glview.cc:160 inited = true #3 0x00007ffff7baf125 in gcugtk::Chem3dView::Chem3dView(gcugtk::Chem3dDoc*) (this=0x5555557d1400, __vtt_parm=0x55555575aed0 , doc=, __in_chrg=) at chem3dview.cc:31 #4 0x000055555555976b in gc3dView::gc3dView(gc3dDocument*) (this=0x5555557d1400, Doc= 0x55555596fde0, __in_chrg=, __vtt_parm=) at view.cc:29 #5 0x0000555555559437 in gc3dDocument::gc3dDocument(gc3dApplication*) (this=0x55555596fde0, App= 0x5555557fbda0, __in_chrg=, __vtt_parm=) at document.cc:33 #6 0x000055555555906f in gc3dApplication::OnFileNew() (this=0x5555557fbda0) at application.cc:46 Doc = w = #7 0x0000555555558c27 in main(int, char**) (argc=, argv=) at main.cc:78 path = dir = uri = error = 0x0 context = App = 0x5555557fbda0 pDoc = bres =