After running 'killall xfce4-power-manager' the problem still persists. So I assume that rules out the power manager being the cause of the problem, and therefore I haven't the faintest clue as to what causes it.
After running 'killall xfce4-power- manager' the problem still persists. So I assume that rules out the power manager being the cause of the problem, and therefore I haven't the faintest clue as to what causes it.