Comment 0 for bug 1509846

On Ubuntu 15.10 I get crashes, when I open a new window in an already started application. It happens irregularely, but I can force the crash if I open several new message windows in thunderbird. But it also happens in other applilcations, for example a new terminal window.

This is the output during the crash in /var/log/Xorg.0.log
[ 253.500] (EE)
[ 253.500] (EE) Backtrace:
[ 253.500] (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x55f09075b62e]
[ 253.500] (EE) 1: /usr/bin/X (0x55f0905a7000+0x1b8999) [0x55f09075f999]
[ 253.500] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f44130a8000+0x352f0) [0x7f44130dd2f0]
[ 253.500] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x24f18) [0x7f440f4a3f18]
[ 253.500] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x26157) [0x7f440f4a5157]
[ 253.500] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x2b4b1) [0x7f440f4aa4b1]
[ 253.500] (EE) 6: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x804e4) [0x7f440f4ff4e4]
[ 253.501] (EE) 7: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x80e2c) [0x7f440f4ffe2c]
[ 253.501] (EE) 8: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x82e1a) [0x7f440f501e1a]
[ 253.501] (EE) 9: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x4197c) [0x7f440f4c097c]
[ 253.501] (EE) 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f440f47f000+0x59906) [0x7f440f4d8906]
[ 253.501] (EE) 11: /usr/bin/X (_CallCallbacks+0x34) [0x55f090604654]
[ 253.501] (EE) 12: /usr/bin/X (WriteToClient+0x244) [0x55f09075f274]
[ 253.501] (EE) 13: /usr/bin/X (WriteEventsToClient+0x1e2) [0x55f09060a502]
[ 253.501] (EE) 14: /usr/bin/X (0x55f0905a7000+0xf495a) [0x55f09069b95a]
[ 253.501] (EE) 15: /usr/bin/X (0x55f0905a7000+0xf5ef5) [0x55f09069cef5]
[ 253.501] (EE) 16: /usr/bin/X (0x55f0905a7000+0x5818f) [0x55f0905ff18f]
[ 253.501] (EE) 17: /usr/bin/X (0x55f0905a7000+0x5c34b) [0x55f09060334b]
[ 253.501] (EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7f44130c8a40]
[ 253.501] (EE) 19: /usr/bin/X (_start+0x29) [0x55f0905ed6c9]
[ 253.501] (EE)
[ 253.501] (EE) Segmentation fault at address 0x0
[ 253.501] (EE)
Fatal server error:
[ 253.501] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 253.501] (EE)
[ 253.501] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[ 253.501] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 253.502] (EE)
[ 253.502] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 253.588] (EE) Server terminated with error (1). Closing log file.