Program received signal SIGSEGV, Segmentation fault.
list_del (entry=0x1ed0240) at /usr/include/xorg/list.h:186
186     /usr/include/xorg/list.h: Bestand of map bestaat niet.
        in /usr/include/xorg/list.h
	(gdb) where
	#0  list_del (entry=0x1ed0240) at /usr/include/xorg/list.h:186
	#1  i830_dri2_frame_event_drawable_gone (data=0x929d20, id=<optimized out>) at ../../src/intel_dri.c:687
	#2  0x00000000004560f2 in doFreeResource (res=0x8a0e80, skip=0) at ../../dix/resource.c:571
	#3  0x00000000004568a4 in FreeResource (id=8388622, skipDeleteFuncType=1073741825) at ../../dix/resource.c:604
	#4  0x000000000045fad0 in CrushTree (pWin=0x1ecfb70) at ../../dix/window.c:972
	#5  DeleteWindow (value=0x1ecfb70, wid=8388619) at ../../dix/window.c:1008
	#6  0x00000000004560f2 in doFreeResource (res=0x1ecf890, skip=0) at ../../dix/resource.c:571
	#7  0x00000000004568a4 in FreeResource (id=8388619, skipDeleteFuncType=0) at ../../dix/resource.c:604
	#8  0x00000000004321be in ProcDestroyWindow (client=0xf40d30) at ../../dix/dispatch.c:733
	#9  0x0000000000437ae9 in Dispatch () at ../../dix/dispatch.c:432
	#10 0x0000000000426eaa in main (argc=2, argv=<optimized out>, envp=<optimized out>) at ../../dix/main.c:287
(gdb) c
Continuing.

Backtrace:
0: /usr/bin/Xorg (xorg_backtrace+0x26) [0x5689d6]
1: /usr/bin/Xorg (0x400000+0x16c5c9) [0x56c5c9]
2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7ffff7327000+0xf020) [0x7ffff7336020]
3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ffff4047000+0x247ff) [0x7ffff406b7ff]
4: /usr/bin/Xorg (0x400000+0x560f2) [0x4560f2]
5: /usr/bin/Xorg (FreeResource+0xc4) [0x4568a4]
6: /usr/bin/Xorg (DeleteWindow+0x130) [0x45fad0]
7: /usr/bin/Xorg (0x400000+0x560f2) [0x4560f2]
8: /usr/bin/Xorg (FreeResource+0xc4) [0x4568a4]
9: /usr/bin/Xorg (0x400000+0x321be) [0x4321be]
10: /usr/bin/Xorg (0x400000+0x37ae9) [0x437ae9]
11: /usr/bin/Xorg (0x400000+0x26eaa) [0x426eaa]
12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xfd) [0x7ffff6066ead]
13: /usr/bin/Xorg (0x400000+0x2719d) [0x42719d]
Segmentation fault at address (nil)

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting


Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

Server terminated with error (1). Closing log file.

Program received signal SIGABRT, Aborted.
0x00007ffff607a405 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64      ../nptl/sysdeps/unix/sysv/linux/raise.c: Bestand of map bestaat niet.
        in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb)