In addition I get the flooring errors in Xorg.0.log
cat /var/log/Xorg.0.log | grep EE
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 288.401] Initializing built-in extension MIT-SCREEN-SAVER
[ 313.863] (EE)
[ 313.863] (EE) Backtrace:
[ 313.863] (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x5979d6]
[ 313.863] (EE) 1: /usr/bin/X (0x400000+0x19b8c9) [0x59b8c9]
[ 313.863] (EE) 2: /lib64/libpthread.so.0 (0x7fdb5cc20000+0x10810)
[0x7fdb5cc30810]
[ 313.863] (EE) 3: /lib64/libc.so.6 (0x7fdb5b880000+0x136284) [0x7fdb5b9b6284]
[ 313.863] (EE) 4: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0x116fd3) [0x7fdb570eefd3]
[ 313.863] (EE) 5: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0x1172ed) [0x7fdb570ef2ed]
[ 313.863] (EE) 6: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0xab654) [0x7fdb57083654]
[ 313.863] (EE) 7: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0xe64e1) [0x7fdb570be4e1]
[ 313.863] (EE) 8: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0xb87ed) [0x7fdb570907ed]
[ 313.863] (EE) 9: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7fdb56fd8000+0x55a3d2) [0x7fdb575323d2]
[ 313.863] (EE) 10: /usr/bin/X (AddScreen+0x88) [0x439928]
[ 313.864] (EE) 11: /usr/bin/X (InitOutput+0x3fc) [0x47d09c]
[ 313.864] (EE) 12: /usr/bin/X (0x400000+0x280e3) [0x4280e3]
[ 313.864] (EE) 13: /lib64/libc.so.6 (__libc_start_main+0xec) [0x7fdb5b8a24cc]
[ 313.864] (EE) 14: /usr/bin/X (0x400000+0x27e09) [0x427e09]
[ 313.864] (EE)
[ 313.864] (EE) Segmentation fault at address 0x7fdb5d8b7ff0
[ 313.864] (EE)
[ 313.864] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 313.864] (EE)
--
Joseph