Comment 129 for bug 815996

It happens to me very frequently. When I use 'ctl+alt+arrows' to switch between workspaces, it can happen. The probability of crash goes higher e.g. when I have a chrome page open and watching a youtub in fullscreen.

my details:
Linux vostro 3.16.0-60-generic #80~14.04.1-Ubuntu
unity 7.2.6
Compiz 0.9.11.3

I tried to downgrade and upgrade my nvidia driver, but it does not make any difference.

These things helps:
switching to tty1 and going back to graphical mode, but not always fixes the problem.
#killall -9 compiz
which works like logging out and logging in again...but results in lost of work and stuff....

please let me know how I can give you a better log/description