[user@localhost ~]$ vmd -debug
***
*** Running VMD in debugger, type 'run' at debugger prompt
***
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..
Reading symbols from /usr/local/lib/vmd/vmd_LINUXAMD64...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/local/lib/vmd/vmd_LINUXAMD64 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Info) VMD for LINUXAMD64, version 1.9.1 (February 1, 2012)
Info) http://www.ks.uiuc.edu/Research/vmd/                         
Info) Email questions and bug reports to vmd@ks.uiuc.edu           
Info) Please include this reference in published work using VMD:   
Info)    Humphrey, W., Dalke, A. and Schulten, K., `VMD - Visual   
Info)    Molecular Dynamics', J. Molec. Graphics 1996, 14.1, 33-38.
Info) -------------------------------------------------------------
Info) Multithreading available, 1 CPU detected.
Info) Free system memory: 531MB (53%)
Warning) Detected a mismatch between CUDA runtime and GPU driver
Warning) Check to make sure that GPU drivers are up to date.
Info) No CUDA accelerator devices available.
Warning) Detected X11 'Composite' extension: if incorrect display occurs
Warning) try disabling this optional X server feature.
Info) OpenGL renderer: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits)
Info)   Features: STENCIL MDE CVA MTX NPOT PP PS GLSL(OVF) 
Info)   Full GLSL rendering mode is available.
Info)   Textures: 2-D (8192x8192), 3-D (512x512x512), Multitexture (8)
bad font: -sazanami-helvetica-medium-r-normal--14-0-0-0-c-0-jisx0208.1983-0
Missing separate debuginfo for /usr/local/lib/vmd/libexpat.so.0
Info) Dynamically loaded 2 plugins in directory:
Info) /usr/local/lib/vmd/plugins/LINUXAMD64/molfile

Program received signal SIGSEGV, Segmentation fault.
0x0000003a61a4f973 in XGetICValues () from /lib64/libX11.so.6
Missing separate debuginfos, use: debuginfo-install expat-2.1.0-7.fc20.x86_64 glibc-2.18-12.fc20.x86_64 libX11-1.6.1-1.fc20.x86_64 libXau-1.0.8-2.fc20.x86_64 libXcursor-1.1.14-2.fc20.x86_64 libXdamage-1.1.4-4.fc20.x86_64 libXext-1.3.2-2.fc20.x86_64 libXfixes-5.0.1-2.fc20.x86_64 libXi-1.7.2-2.fc20.x86_64 libXinerama-1.1.3-2.fc20.x86_64 libXrender-0.9.8-2.fc20.x86_64 libXxf86vm-1.1.3-2.fc20.x86_64 libdrm-2.4.50-1.fc20.x86_64 libffi-3.0.13-5.fc20.x86_64 libgcc-4.8.2-7.fc20.x86_64 libselinux-2.2.1-6.fc20.x86_64 libstdc++-4.8.2-7.fc20.x86_64 libxcb-1.9.1-3.fc20.x86_64 llvm-libs-3.3-4.fc20.x86_64 mesa-dri-drivers-9.2.5-1.20131220.fc20.x86_64 mesa-libGL-9.2.5-1.20131220.fc20.x86_64 mesa-libGLU-9.0.0-4.fc20.x86_64 mesa-libglapi-9.2.5-1.20131220.fc20.x86_64 pcre-8.33-4.fc20.x86_64 xz-libs-5.1.2-6alpha.fc20.x86_64 zlib-1.2.8-3.fc20.x86_64
(gdb) where
#0  0x0000003a61a4f973 in XGetICValues () from /lib64/libX11.so.6
#1  0x00000000008d04fb in Tk_HandleEvent ()
#2  0x00000000008d0e93 in ?? ()
#3  0x0000000000964c0a in Tcl_ServiceEvent ()
#4  0x0000000000964f87 in Tcl_DoOneEvent ()
#5  0x00000000006a378b in TclTextInterp::doTkUpdate() ()
#6  0x000000000064ca37 in UIText::check_event() ()
#7  0x000000000052aff2 in CommandQueue::check_events() ()
#8  0x000000000065d675 in VMDApp::VMDupdate(int) ()
#9  0x0000000000687309 in main ()
(gdb) quit
A debugging session is active.

	Inferior 1 [process 1694] will be killed.

Quit anyway? (y or n) y
