EE messages could be found in the Xorg log file.
e.g. Xorg.0.log.old:[ 234.524] (EE) Backtrace: Xorg.0.log.old:[ 234.524] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fe0bf9fcd28] Xorg.0.log.old:[ 234.524] (EE) 1: /usr/bin/X (0x7fe0bf854000+0x1aca19) [0x7fe0bfa00a19] Xorg.0.log.old:[ 234.524] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fe0be951000+0x10340) [0x7fe0be961340] Xorg.0.log.old:[ 234.524] (EE) Xorg.0.log.old:[ 234.524] (EE) Segmentation fault at address 0x0 Xorg.0.log.old:[ 234.524] (EE) Xorg.0.log.old:[ 234.524] (EE) Caught signal 11 (Segmentation fault). Server aborting
EE messages could be found in the Xorg log file.
e.g. +0x48) [0x7fe0bf9fcd28] +0x1aca19) [0x7fe0bfa00a19] 64-linux- gnu/libpthread. so.0 (0x7fe0be951000 +0x10340) [0x7fe0be961340]
Xorg.0.log.old:[ 234.524] (EE) Backtrace:
Xorg.0.log.old:[ 234.524] (EE) 0: /usr/bin/X (xorg_backtrace
Xorg.0.log.old:[ 234.524] (EE) 1: /usr/bin/X (0x7fe0bf854000
Xorg.0.log.old:[ 234.524] (EE) 2: /lib/x86_
Xorg.0.log.old:[ 234.524] (EE)
Xorg.0.log.old:[ 234.524] (EE) Segmentation fault at address 0x0
Xorg.0.log.old:[ 234.524] (EE)
Xorg.0.log.old:[ 234.524] (EE) Caught signal 11 (Segmentation fault). Server aborting