dear all, a courtesy message to help those who have an annoying printer stuck on pause, light flashing, no solution - BEFORE you check all the complex advise, try checking your ink cartridges.

My HP deskjet 3940 seemed to be broken, and ubuntu couldn't locate the problem, but it wasn't a driver error etc as people assume. I followed this advise, and it worked.

I removed the colour cartridge, closed lid and it all stayed the same, so I put colour back. I removed black one, closed lid, and the flashing light stopped. So, first stop - new black cartridge! : )