Comment 2 for bug 1843895

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

Before using gdb do '$ export GDK_SYNCHRONIZE=1'

What version of Ubuntu are you using