I've got a Minolta PageworksEX color postscript laser printer and I'm trying to get the tray selection to work with CUPS.
I'm currently using the generic postscript driver. At the moment, selecting trays does nothing. The printer always selects tray 2 if it has paper and tray 1 only when tray 2 is out of paper, regardless of the setting in CUPS, lpoptions, KDE, or gnome. The printer seems to work fairly well otherwise.