Same problem, when updating, from 14.04 LTS to 16.04 LTS.
Desktop Environment: GNOME-Flashback: Unity (gnome-flashback-metacity)
The strange thing is that in 14.04, this did not happen to me.
I'm thinking of going back to Trusty.
The momentary solution with the script, does not provide solution for
I can reproduce this with anything that consumes CPU. Audacious doesn't
exhibit the behavior even under full CPU load.
Worst (another bug?) the sound player (most probably the sound
infrastructure) hangs under extreme loads, to the point of having to
kill it.
--
Basic graphics operations makes a