I'd like to add that printing an image (colored, but mostly black) is fine when using the "normal" mode, but the contrast on the paper is very poor when printing in the "normal grayscale" mode. Black lines are printed as very light gray lines.
I have encountered this on different HP (color) laserjet printers.
The problem affects Ubuntu 12.04 (64bit) and Debian squeeze (64bit).
I'd like to add that printing an image (colored, but mostly black) is fine when using the "normal" mode, but the contrast on the paper is very poor when printing in the "normal grayscale" mode. Black lines are printed as very light gray lines.
I have encountered this on different HP (color) laserjet printers.
The problem affects Ubuntu 12.04 (64bit) and Debian squeeze (64bit).