Comment 22 for bug 817979

It just happened and this is what X log reports (/var/log/Xorg.0.log)

[ 885.137] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
[ 885.137]
Backtrace:
[ 885.138] 0: /usr/bin/X (xorg_backtrace+0x37) [0x80a66a7]
[ 885.138] 1: /usr/bin/X (mieqEnqueue+0x1d1) [0x80a0661]
[ 885.138] 2: /usr/bin/X (xf86PostTouchEvent+0x94) [0x80c8e74]
[ 885.138] 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb4982000+0xacd0) [0xb498ccd0]
[ 885.138] 4: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb4982000+0xae86) [0xb498ce86]
[ 885.138] 5: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb4982000+0xb418) [0xb498d418]
[ 885.138] 6: /usr/lib/libutouch-grail.so.1 (0xb4970000+0x4150) [0xb4974150]
[ 885.138] 7: /usr/lib/libutouch-grail.so.1 (grail_pull+0xce) [0xb497469e]
[ 885.138] 8: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb4982000+0xb211) [0xb498d211]
[ 885.138] 9: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb4982000+0x6c4f) [0xb4988c4f]
[ 885.138] 10: /usr/bin/X (0x8048000+0x6cb31) [0x80b4b31]
[ 885.138] 11: /usr/bin/X (0x8048000+0x12d292) [0x8175292]
[ 885.138] 12: (vdso) (__kernel_sigreturn+0x0) [0xb7733400]
[ 885.138] 13: (vdso) (__kernel_vsyscall+0x10) [0xb7733424]
[ 885.138] 14: /lib/i386-linux-gnu/libc.so.6 (__select+0x2d) [0xb74a7e9d]
[ 885.138] 15: /usr/bin/X (WaitForSomething+0x18c) [0x80a3f3c]
[ 885.138] 16: /usr/bin/X (0x8048000+0x29ed2) [0x8071ed2]
[ 885.138] 17: /usr/bin/X (0x8048000+0x1c70c) [0x806470c]
[ 885.138] 18: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0xb73f6113]
[ 885.138] 19: /usr/bin/X (0x8048000+0x1ca21) [0x8064a21]