Xorg.0.log.old:148:[    80.251] (EE)
Xorg.0.log.old:149:[    80.251] (EE) Backtrace:
Xorg.0.log.old:150:[    80.270] (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7fd538b24476]
Xorg.0.log.old:151:[    80.270] (EE) 1: /usr/bin/X (0x7fd538974000+0x1b42b9) [0x7fd538b282b9]
Xorg.0.log.old:152:[    80.270] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fd537a77000+0xfbd0) [0x7fd537a86bd0]
Xorg.0.log.old:153:[    80.270] (EE) 3: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0x53d4c3) [0x7fd53213a4c3]
Xorg.0.log.old:154:[    80.270] (EE) 4: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xce4d4) [0x7fd531ccb4d4]
Xorg.0.log.old:155:[    80.270] (EE) 5: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xceb70) [0x7fd531ccbb70]
Xorg.0.log.old:156:[    80.270] (EE) 6: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0x81314) [0x7fd531c7e314]
Xorg.0.log.old:157:[    80.270] (EE) 7: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xfecf1) [0x7fd531cfbcf1]
Xorg.0.log.old:158:[    80.270] (EE) 8: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xfeedd) [0x7fd531cfbedd]
Xorg.0.log.old:159:[    80.270] (EE) 9: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0x9c424) [0x7fd531c99424]
Xorg.0.log.old:160:[    80.270] (EE) 10: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xd5111) [0x7fd531cd2111]
Xorg.0.log.old:161:[    80.270] (EE) 11: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0xa7c5c) [0x7fd531ca4c5c]
Xorg.0.log.old:162:[    80.270] (EE) 12: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fd531bfd000+0x5122f5) [0x7fd53210f2f5]
Xorg.0.log.old:163:[    80.270] (EE) 13: /usr/bin/X (AddScreen+0x85) [0x7fd5389ccd55]
Xorg.0.log.old:164:[    80.270] (EE) 14: /usr/bin/X (InitOutput+0x402) [0x7fd538a0e662]
Xorg.0.log.old:165:[    80.271] (EE) 15: /usr/bin/X (0x7fd538974000+0x47386) [0x7fd5389bb386]
Xorg.0.log.old:166:[    80.271] (EE) 16: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fd5366c4ea5]
Xorg.0.log.old:167:[    80.271] (EE) 17: /usr/bin/X (0x7fd538974000+0x478c1) [0x7fd5389bb8c1]
Xorg.0.log.old:168:[    80.271] (EE)
Xorg.0.log.old:169:[    80.271] (EE) Segmentation fault at address 0x3f0