vncserver segmentation fault

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I am getting a segfault when I start vncserver. The tigervnc server was installed per direction from Red Hat documentation. However, it doesn't work as advertised. Does anyone know where I can even begin to determine what has gone wrong? The following is the backtrace I got from Xvnc:

Xvnc TigerVNC 1.3.1 - built Sep 13 2016 10:00:38
Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 11702000, The X.Org Foundation

Thu Jan 12 17:22:43 2017
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5901
vncext: created VNC server for screen 0
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/Xvnc (xorg_backtrace+0x55) [0x5ba9f5]
(EE) 1: /usr/bin/Xvnc (0x400000+0x1be9d9) [0x5be9d9]
(EE) 2: /usr/lib64/libpthread.so.0 (0x7f7cedcb8000+0xf370) [0x7f7cedcc7370]
(EE) 3: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0x5c09) [0x7f7cefa1bc09]
(EE) 4: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0x836b) [0x7f7cefa1e36b]
(EE) 5: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0x13684) [0x7f7cefa29684]
(EE) 6: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0xeff4) [0x7f7cefa24ff4]
(EE) 7: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0x12feb) [0x7f7cefa28feb]
(EE) 8: /usr/lib64/libdl.so.2 (0x7f7ceee3e000+0xfbb) [0x7f7ceee3efbb]
(EE) 9: /lib64/ld-linux-x86-64.so.2 (0x7f7cefa16000+0xeff4) [0x7f7cefa24ff4]
(EE) 10: /usr/lib64/libdl.so.2 (0x7f7ceee3e000+0x15bd) [0x7f7ceee3f5bd]
(EE) 11: /usr/lib64/libdl.so.2 (dlopen+0x31) [0x7f7ceee3f051]
(EE) 12: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x37d214) [0x7f7ce6760214]
(EE) 13: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x66d530) [0x7f7ce6a50530]
(EE) 14: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x968e0) [0x7f7ce64798e0]
(EE) 15: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x41dbd2) [0x7f7ce6800bd2]
(EE) 16: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x31946c) [0x7f7ce66fc46c]
(EE) 17: /usr/lib64/dri/swrast_dri.so (0x7f7ce63e3000+0x317042) [0x7f7ce66fa042]
(EE) 18: /usr/bin/Xvnc (0x400000+0x8e040) [0x48e040]
(EE) 19: /usr/bin/Xvnc (GlxExtensionInit+0x16a) [0x48d45a]
(EE) 20: /usr/bin/Xvnc (InitExtensions+0x43) [0x44d683]
(EE) 21: /usr/bin/Xvnc (dix_main+0x210) [0x56d910]
(EE) 22: /usr/lib64/libc.so.6 (__libc_start_main+0xf5) [0x7f7cecdbab35]
(EE) 23: /usr/bin/Xvnc (0x400000+0x4adba) [0x44adba]
(EE)
(EE) Segmentation fault at address 0x7f7cefc35de0
(EE)
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting
(EE)

YJ

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