Monitor power management

[Martin Foster]

I'm a newcomer to Kubuntu and so far, I'm impressed :-)

However, I have a niggling problem with my monitor:
Under "Settings/Peripherals/Display/Power Control", I do NOT have "Enable 
display power management" checked, yet after a certain length of time of 
inactivity, the monitor is placed in Stand-By mode. Is this a known problem 
or could some kind soul offer a solution.

-- 
Martin