Hi, Fred...
When I first read your message, I wondered what was in those doughnuts you've been eating <g>, but figured I'd give it a shot. (I've wondered about video drivers, but never suspected a printer driver.)
And you were right!
I don't have an HP driver, but I do have a driver for a color laser printer called Tectronix (or something like that). The driver is from the manufacturer. When I remove the driver, everything works OK.
Now the hard part....explaining it!
Thanks for the info!
Kevin