Same here. xubuntu 16.04, hplip 3.17.10, no tray choice. I guess the purpose of the dual tray is to have both trays with different paper formats online at the same time. At the moment this is not usable on the 7740.
Same here. xubuntu 16.04, hplip 3.17.10, no tray choice. I guess the purpose of the dual tray is to have both trays with different paper formats online at the same time. At the moment this is not usable on the 7740.