[ 93.128] Backtrace:
[ 93.129] 0: /usr/bin/Xorg (xorg_backtrace+0x36) [0x7f1587d37796]
[ 93.129] 1: /usr/bin/Xorg (0x7f1587bb9000+0x1822b9) [0x7f1587d3b2b9]
[ 93.129] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f1586ee1000+0xf030) [0x7f1586ef0030]
[ 93.129] 3: /usr/bin/Xorg (xf86nameCompare+0x63) [0x7f1587c72963]
[ 93.129] 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f1583b12000+0xfba9) [0x7f1583b21ba9]
[ 93.129] 5: /usr/bin/Xorg (0x7f1587bb9000+0xa67f7) [0x7f1587c5f7f7]
[ 93.129] 6: /usr/bin/Xorg (xf86CallDriverProbe+0x8c) [0x7f1587c3dd4c]
[ 93.129] 7: /usr/bin/Xorg (xf86BusConfig+0x80) [0x7f1587c3e5e0]
[ 93.129] 8: /usr/bin/Xorg (InitOutput+0x7a0) [0x7f1587c4a6a0]
[ 93.129] 9: /usr/bin/Xorg (0x7f1587bb9000+0x41d36) [0x7f1587bfad36]
[ 93.129] 10: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xfd) [0x7f1585c0aead]
[ 93.129] 11: /usr/bin/Xorg (0x7f1587bb9000+0x421ad) [0x7f1587bfb1ad]
[ 93.129]
[ 93.129] Segmentation fault at address (nil)
[ 93.129]
Fatal server error:
[ 93.129] Caught signal 11 (Segmentation fault). Server aborting
[ 93.129]
[ 93.129]
Please consult the The X.Org Foundation support
for help.
[ 93.129] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
from xserver-xorg-video-intel_2.19.0-2_amd64.deb to xserver-xorg-video-intel_2.19.0-1_amd64.deb
An additional detail is that in my case, this bug was manifesting in a nasty way of rapidly launching lots and lots of instances of Xorg processes, which were trying to allocate new TTYs, and the conputer was hanging.
My hardware is: video integrated into Intel Core i5-2310, and motherboard is ASUS P8Z77-V PRO.