i have installed kali linux dualboot with **windows 8.1** and its work fine one day i have open kali and there is a message say "**oh no some thing go wrong and system cannot recover please log out and try again**" kali installed on two partition different from System partition C:
partition ______ space ______ used ______ contain
F ____________ 12.1 _______ 0.1 ______ lost+found
G ___________ 13 _________ 12 _______ system files
the X.org log :
`[ 27.886]
X.Org X Server 1.16.4
Release Date: 2014-12-20
[ 27.886] X Protocol Version 11, Revision 0
[ 27.887] Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
[ 27.887] Current Operating System: Linux GreetKali 3.14-kali1-amd64 #1 SMP Debian 3.14.5-1kali1 (2014-06-07) x86_64
[ 27.887] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.14-kali1-amd64 root=UUID=6b6ffd5b-fa8e-4579-8d53-756b2cb5bb72 ro quiet nouveau.modeset=0
[ 27.887] Build Date: 11 February 2015 12:32:02AM
[ 27.887] xorg-server 2:1.16.4-1 (http://www.debian.org/support)
[ 27.887] Current version of pixman: 0.32.6
[ 27.887] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 27.887] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 27.887] (==) Log file: "/var/log/Xorg.5.log", Time: Thu Apr 16 15:43:36 2015
[ 27.887] (II) Loader magic: 0x7fe3f643fd80
[ 27.887] (II) Module ABI versions:
[ 27.887] X.Org ANSI C Emulation: 0.4
[ 27.887] X.Org Video Driver: 18.0
[ 27.887] X.Org XInput driver : 21.0
[ 27.887] X.Org Server Extension : 8.0
[ 27.888] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 27.891] (--) PCI:*(0:0:2:0) 8086:0116:17aa:3977 rev 9, Mem @ 0xf3000000/4194304, 0xd0000000/268435456, I/O @ 0x00004000/64
[ 27.891] (--) PCI: (0:1:0:0) 10de:1140:17aa:3983 rev 161, Mem @ 0xf2000000/16777216, 0xe0000000/268435456, 0xf0000000/33554432, I/O @ 0x00003000/128
[ 27.891] (EE)
[ 27.891] (EE) Backtrace:
[ 27.891] (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x56) [0x7fe3f61b8d46]
[ 27.891] (EE) 1: /usr/bin/Xorg (0x7fe3f6002000+0x1baf29) [0x7fe3f61bcf29]
[ 27.891] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fe3f3cf7000+0x35180) [0x7fe3f3d2c180]
[ 27.892] (EE) 3: /usr/bin/Xorg (xf86PlatformMatchDriver+0xa5) [0x7fe3f60bac75]
[ 27.892] (EE) 4: /usr/bin/Xorg (0x7fe3f6002000+0xbbd1d) [0x7fe3f60bdd1d]
[ 27.892] (EE) 5: /usr/bin/Xorg (0x7fe3f6002000+0xbbebc) [0x7fe3f60bdebc]
[ 27.892] (EE) 6: /usr/bin/Xorg (InitOutput+0x712) [0x7fe3f609bec2]
[ 27.892] (EE) 7: /usr/bin/Xorg (0x7fe3f6002000+0x5b3aa) [0x7fe3f605d3aa]
[ 27.892] (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fe3f3d18b45]
[ 27.892] (EE) 9: /usr/bin/Xorg (0x7fe3f6002000+0x4590e) [0x7fe3f604790e]
[ 27.892] (EE)
[ 27.892] (EE) Segmentation fault at address 0x50
[ 27.892] (EE)
Fatal server error:
[ 27.892] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 27.892] (EE)
[ 27.892] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 27.893] (EE) Please also check the log file at "/var/log/Xorg.5.log" for additional information.
[ 27.893] (EE)`
when command like display run it show :
`unable to open x server @erorr/display.c/displayimagecommand/428`
