the problem with Google Chrome mentioned at
http://www.displaylink.com/support/ticket.php?id=339 has returned in version 7.4M2.
7.4M0 did not have the problem.
the mentioned workaround "Enter the –reduce-gpu-sandbox parameter as the last part of the "Target”" string" does not work though
my google chrome version is 30.0.1599.101 m